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Our research team has been very productive in publishing referred articles in highly reputable scientific journals.
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Arsenic hyperaccumulation by Chinese Brake fern (63)
Arsenic background concentrations in Florida soils (9)
CCA treated woods (2)
Colloids and heavy metals in soils (4)
Compost application in soils (4)
Digestion methods for metal analysis in soils (2)
Lead chemistry in  shooting range soils (7)
Metal accumulation by plants (3)
Metal background concentrations in Florida soils (4)
Metal chemistry in soils (11)
Papermill ash and sludge application in soils (9)
Phosphate background concentrations in Florida soils (2)
Phosphate-induced metal immobilization in contaminated soils (20)

List of Referred Articles
By author (alphabetical order)
By year (reverse chronological order)

Arsenic hyperaccumulation by Chinese Brake fern (63)-arranged by year

Year 2009 (7)

63 Kertulis-Tartar, G., Bala Rathinasabapathi and L. Q. Ma 2009.

Characterization of glutathione reductase and catalase in the fronds of two Pteris ferns upon arsenic exposure
Plant Phisiology Biochemsitry. 47:960–965

62 Gonzaga, M.I.,S. L.Q. Ma J.A.G. Santos, and M.I.S. Matias. 2009.
Rhizosphere characteristics of two arsenic hyperaccumulating Pteris ferns

Sci. Total Environ. 407: 4711-4716

61 Mathews, S., L.Q. Ma, B. Rathinasabapathib, and R.H. Stamps. 2009.
Arsenic reduced scale-insect infestation on arsenic hyperaccumulator Pteris vittata L.
Environ. Exp. Bot. 65:282-286.

60 Natarajan, S., R.H. Stamps, U.K. Saha and L.Q. Ma. 2009.

Effects of N and P levels, and frond-harvesting on absorption, translocation and accumulation of arsenic by Chinese brake fern (Pteris vittata L.).

Int. J. Phytoremediation. 11: 313–328.

59 Singh, N., L.Q. Ma, J.C. Vu and A. Raj. 2009.
Effects of arsenic on nitrate metabolism in arsenic hyperaccumulating and non-hyperaccumulating ferns

Environnent Pollution. 157: 2300-2305

57 Srivastava M., L.Q. Ma, B. Rathinasabapathi and P. Srivastava. 2009.

Effect of selenium on arsenic uptake in arsenic hyperaccumulator Pteris vittata L.

Bioresource Technology. 100: 1115–1121.

57 Zeng, X., L.Q. Ma, R. Qiu, and Y. Tang. 2009.

Responses of non-protein thiols to Cd exposure in Cd hyperaccumulator Arabis paniculata Franch
Environ. Exp. Bot. 66:242-248.

Year 2008-published (6)

56 Fayiga, A.O., and L. Q. Ma, and B. Rathinasabapathi. 2008.

Effects of nutrients on arsenic accumulation by arsenic hyperaccumulator Pteris vittata L.
Environ. Exp. Bot. 62: 231-237

55 Gonzaga, M.I.S., Satos, J.A.G., and L.Q. Ma. 2008.

Phytoextraction by arsenic hyperaccumulator Pteris vittata L. from six arsenic-contaminated soils:
Repeated harvests and arsenic redistribution.
Environ. Pollution. 154:212-218。

54 Natarajan, S. R. Stamps, U. Saha and L.Q. Ma. 2008.

Phytoremediation of arsenic contaminated groundwater using Pteris vittata L.: effect of pant density and N and P levels

Int. J. Phytoremediation. 10:222–235.

53 Satos, J. A.G., L.Q. Ma, M.I.S. Gonzaga, and M. Srivastava. 2008.

Timing of phosphate application affects arsenic phytoextraction by Pteris vittata L of different ages.
Environ. Pollution. 154:306-31

52 Seenivasan, N, R.H. Stamps, U.K. Saha and L.Q. Ma. 2008.

Phytoremediation of arsenic contaminated groundwater using Pteris vittata L.:

effect of pant density and nitrogen and phosphorus levels
Int. J. Phytoremediation. 10: 222-235.

51 Sundaram S, B. Rathinasabapathi, LQ. Ma, and BP Rosen. 2008.
An arsenate-activated glutaredoxin from the arsenic hyperaccumulator fern Pteris vittata L. regulates intracellular arsenite
J. Biological Chem. 283:6095-6101.

Year 2007 (5)

50 Bondada, B.R., R. S. Underhill, L.Q. Ma, M.R. Davidson, Y. Guyodo, R.S. Duran^. 2007.
Spatial distribution, localization and speciation of arsenic in the hyperaccumulating fern (Pteris vittata l.)
In P. Bhattacharya, A.B. Mukherjee and R.H. Loeppert (eds)
Arsenic in Soil and Groundwater Environments: Trace Metals and Other Contaminants in Environment.
Elsevier Book Series. Volume 9. pp 299-314

49 Fayiga, A.O., L. Q. Ma and Q. Zhou. 2007.
Effects of plant arsenic uptake and heavy metals on arsenic distribution in an arsenic-contaminated soil.
Environment Pollution. 147:737-742

48 Gonzaga, M.I.,S. J.A.G. Santos, N.B. Comerford, and L.Q. Ma. 2007.
Comparison of root systems efficiency and arsenic uptake of two fern species
Communications Soil Science Plant Analysis. 38:1163 - 1177.

47 Gonzaga, M.I.,S. J.A.G. Santos, and L.Q. Ma,. 2007.
Effects of the plant growth stage on the arsenic hyperaccumulation by Pteris vittata L
Water Air Soil Pollution. 186: 289-295

46 Rathinasabapathi, B., M. Rangasamy, J. Froeba, R. H. Cherry, …..., M. Srivastava, & L.Q. Ma. 2007.
Arsenic hyperaccumulation in the Chinese brake fern (Pteris vittata) deters grasshopper (Schistocerca americana) herbivory
New Phytologist. 175: 363–369.

Year 2006 (11)

45 Bondada, B., C. Tu, and L.Q. Ma. 2006.
Surface structure and anatomical aspects of Chinese brake fern (Pteris vittata; Pteridaceae).
Brittonia.  58: 217-228.

44 Fayiga, A.O. and L. Q. Ma. 2006.
Using phosphate rock to immobilize metals in soils and increase arsenic uptake in Pteris vittata.
Science Total Environment. 359: 17– 25

43 Gonzaga, M.I.S, J.A.G. Santos, and L.Q. Ma. 2006.
Arsenic chemistry in the rhizosphere of Pteris vittata L. and Nephrolepis exaltata L
Environment Pollution. 143:254-260.

42 Gonzaga, M.I., S, J.A.G. Santos, and L.Q. Ma. 2006.
Arsenic phytoextraction and hyperaccumulation by fern species
Sci. Agric. 63:.90-101.

41 Kertulis-Tartar, G., L. Q. Ma, C. Tu and T. Chirenje. 2006.
Phytoremediation of an arsenic-contaminated site using Pteris vittata L: a two-year study.
Int. J. Phytoremediation. 8:311-322.

40 Rathinasabapathi B, Raman SB, Kertulis G, and Ma LQ. 2006.
Arsenic-resistant proteobacterium from the phyllosphere of arsenic-hyperaccumulating fern
(Pteris vittata L.) reduces arsenate to arsenite
Canadian J. Microbiology. 52:695-700.

39 Rathinasabapathi B, L.Q. Ma, and M. Srivastava. 2006.
Arsenic hyperaccumulating ferns and their application to phytoremediation of arsenic contaminated sites
In: Floriculture, Ornamental and Plant Biotechnology: Advances and Topical Issues (1st Edition),
Teixeira da Silva JA (ed), Global Science Books, London, UK, pp 305-311.

38 Rathinasabapathi B, S. Wu, J. Rivoa,S. Sundaram, L.Q. Ma. and M. Srivastava. 2006.
Arsenic resistance in Pteris vittata L.: identification of a cytosolic triosephosphate isomerase
based on cDNA expression cloning in Escherichia coli.
Plant Molecular Biology. 62: 845-857.

37 Singh, N. and L.Q. Ma. 2006.
Arsenic speciation, and arsenic and phosphate distribution in arsenic hyperaccumulator Pteris vittata and
non-hyperaccumulator Pteris ensiformis
Environment Pollution. 141:238-246.

36 Singh, N., L. Q. Ma, M. Srivastava and B. Rathinasabapathi. 2006.
Metabolic adaptations to arsenic-induced oxidative stress in Pteris vittata L and Pteris ensiformis L
Plant Science. 170: 274-282.

35 Srivastava M. , L.Q. Ma, and J. A. G. Santos. 2006.
Three new arsenic hyperaccumulating ferns.
Sci. Total Environment. 364: 24-31.

Year 2005 (10)

34 Al Agely, A., D.M. Sylvia, and L.Q. Ma 2005.
Mycorrhizae increase arsenic uptake by hyperaccumulator Pteris vittata.
J. Environ. Qual. 34:2181–2186.

33 Fayiga A.O. and L. Q. Ma 2005.
Arsenic uptake by two hyperaccumulator ferns from four arsenic contaminated soils.
Water Air Soil Pollution. 168: 71–89.

32 Fayiga A.O., L. Q. Ma, J. Santos, B. Rathinasabapathi, Stamps B. and R. C. Littell. 2005.
Effects of arsenic species and concentrations on arsenic accumulation by different fern species in a hydroponic system.
Int. J. Phytoremediation. 7:231–240.

31 Kertulis-Tartar, G., L.Q. Ma, G.E. MacDonald, R. Chen, J. Winefordner, and Y. Cai. 2005.
Arsenic speciation and transport in Pteris vittata L. and the effects on phosphate in the xylem sap.
Environ. Exp. Bot. 54: 239–247.

30 Luongo, L and L.Q. Ma. 2005.
Characteristics of arsenic accumulation by Pteris and non-Pteris ferns.
Plant Soil. 277: 117 - 126.

29 Singh, N. and L.Q. Ma. 2005.
Chinese Brake fern-a potential phytoremediator of arsenic contaminated soil and water
Universities J. Phytochemistry Ayurvedic Heights 1:41-43

28 Ouynag, Y. and L.Q. Ma. 2005.
Simulation of phytoremediation of a TNT-contaminated soil using CTSPAC model
J. Environ. Qual. 34:1490–1496.

27 Srivastava M. , L. Q. Ma, N. Singh, and S. Singh. 2005.
Antioxidant responses of hyperaccumulator and sensitive fern species to arsenic
J. Exp. Bot. 56: 1335–1342.

26 Srivastava M. , L.Q. Ma, and J. Cotruvo. 2005.
Uptake and distribution of selenium in different fern species
Int. J. Phytoremediation. 7:33-42.

25 Tu, C., and L.Q. Ma. 2005.
Effects of As hyperaccumulation on nutrient content and distribution in fronds of the hyperaccumulator Chinese brake.
Environ. Pollution. 135: 333-340.

Year 2004 (11)

24 Bondada, B.R., S. Tu and L. Q. Ma. 2004.
Absorption of frond-applied arsenic by the arsenic hyperaccumulating fern Pteris vittata L.
Sci. Total Environment.  332:61-70.

23 Cai, Y., J. Su and L.Q. Ma. 2004.
Low molecular weight thiols in arsenic hyperaccumulator Pteris vittata upon exposure to arsenic and other trace elements
Environ. Pollution. 129: 69-78.

22 Cao, X. Lena Q. Ma, and C. Tu. 2004.
Antioxidative responses to arsenic in arsenic-hyperaccumulator Chinese brake fern (Pteris vittata L.)
Environ. Pollution. 128:317-325.

21 Chen, R., B.W. Smith, J.D. Winefordner, M.S. Tu, G. Kertulis, and L.Q. Ma. 2004.
Arsenic speciation in Chinese brake fern by ion-pair HPLC–inductively coupled plasma mass spectroscopy
Analytica Chemica Acta. 504:199-207.

20 Fayiga, A.O., L.Q. Ma, R. X. Cao, and B. Rathinasabapathi. 2004.
Effects of heavy metals on growth and arsenic accumulation in the arsenic hyperaccumulator Pteris vittata L.
Environment Pollution. 132:289-296.

19 Tu, S., L.Q. Ma, A.O. Fayiga and E.J. Zillioux. 2004.
Phytoremediation of Arsenic Contaminated Groundwater by an Arsenic Hyperaccumulating Fern Pteris vittata L.
Int. J. Phytoremediation. 6:35–47.

18 Tu, S. and L.Q. Ma. 2004.
Comparison of arsenic uptake and distribution in arsenic hyperaccumulator Pteris vittata L. and
non-hyperaccumulator Nephrolepis exaltata L
J. Plant Nutrition. 27:1227-1242.

17 Tu, S. and L.Q. Ma. 2004.
Root exudation and its role in arsenic hyperaccumulation of Pteris vittata
Plant Soil. 258: 9-19.

16 Tu, S., L.Q. Ma, G. E. MacDonald, and B. Bhaskar. 2004.
Arsenic Absorption, Speciation and Thiol Formation in Excised Parts of Pteris vittata in the Presence of Phosphorus
Environ. Exp. Bot. 51: 121-131.

15 Zhang, W., Y. Cai, K. Downum, and L.Q. Ma. 2004.
Arsenic complex in the arsenic hyperaccumulator Pteris vittata (Chinese brake fern)
Journal of Chromatography A. 1043: 249–254.

14 Zhang, W., Y. Cai, Z. Chen, K. Downum, and L.Q. Ma. 2004.
Thiol synthesis and arsenic hyperaccumulation in Pteris vittata (Chinese brake fern)
Environ. Pollution. 131:337-345

Year 2003 (6)

13 Cao, X., L.Q. Ma, and A. Shiralipour. 2003.
Effects of compost and phosphate amendments on arsenic leachability in soils and arsenic uptake
by Chinese Brake (Pteris Vittata L.)
Environ. Pollution. 126:157-167.

12 Fitz, w.j., w.w. Wenzel, h. Zhang, j. Nurmi, k. Tipek, z. Fischerova, …..., l.q. Ma, & g. Stingeder. 2003.
Rhizosphere characteristics of the arsenic hyperaccumulator Pteris vittata L. and monitoring of phytoremoval efficiency
Environ. Sci. Technol. 37: 5008-5014.

11 Tu, C., and L.Q. Ma. 2003.
Effects of arsenate and phosphate on their accumulation by an arsenic-hyperaccumulator Pteris vittata L.
Plant Soil.  249: 373–382.

10 Tu, C., L.Q. Ma, W. Zhang, Y. Cai, W.G. Harris. 2003.
Arsenic species and leachability in the fronds of the hyperaccumulator Chinese brake (Pteris vittata L.).
Environ. Pollution.  124:223-230.

09 Tu, S. and L. Q. Ma. 2003.
Interactive Effects of pH, As and P on growth and As/P uptake in hyperaccumulator Pteris vittata
Environ. Exp. Bot. 50: 243-251.

08 Webb, S.M, J.-F. Gaillard, L. Q. Ma, and C. Tu. 2003.
XAS speciation of arsenic in a hyperaccumulating fern.
Environ. Sci. Technol. 37: 754 - 760.

Year 2002 (6)

07 Bondada, B. and L.Q. Ma. 2002.
Tolerance of heavy metals in vascular plants: arsenic hyperaccumulation by Chinese brake fern (Pteris vittata L.).

In Chandra and Srivastava (eds.) Pteridology in New Millennium. Kluwer Academy Publishers. pp. 397-420.

06 Cai, Y. and L.Q. Ma. 2002.
Metal tolerance, accumulation and detoxification in plants with emphasis on arsenic in terrestrial plants.
In Biogeochemistry of Environmentally Important Trace Elements
Eds., Yong Cai and Olin Braids, Oxford University Press. pp. 95-114.

05 Lombi, E. F.-J. Zhao, M. Fuhrmann, L.Q. Ma and S.P. McGrath. 2002.
Arsenic distribution and speciation in the fronds of the hyperaccumulator Pteris vittata
New Phytologist. 156:195–203

05 Tu, C., and L.Q. Ma. 2002.
Effects of arsenic concentrations and forms on arsenic uptake by the hyperaccumulator Ladder Brake
J. Environ. Qual. 31:641-647.

04 Tu, C., L.Q. Ma, and B. Bondada. 2002.
Arsenic Accumulation in the Hyperaccumulator Chinese Brake Fern (Pteris vittata L.) and Its Utilization
Potential for Phytoremediation.
J. Environ. Qual. 31:1671-1675.

03 Zhang, W., Y. Cai, C. Tu, and L.Q. Ma. 2002.
Arsenic speciation and distribution in an arsenic hyperaccumulating plant.
Sci. Total Environment. 300:167-177

Year 2001 (2)
02 Ma, L.Q., K.M. Komar, C. Tu, W. Zhang,and Y Cai. 2001.
* A fern that hyperaccumulates arsenic. *
Nature. 409:579.

01 Ma, L.Q., K.M. Komar, C. Tu, W. Zhang,and Y Cai. 2001.
* A fern that hyperaccumulates arsenic-addendum. *
Nature. 411:438.

Arsenic background concentrations in Florida soils (8)

8 Chirenje, T., L.Q. Ma, M. Reeves, P.V. Cline, T. Potter, K. Portier and E. Zillioux. 2004.
A case study on the use of subsample values as typical arsenic concentrations in two urban areas in Florida
Environ. Pollution. To be submitted.

7 Chirenje, T., L.Q. Ma, M. Chen and E. J. Zillioux. 2003.
Arsenic background concentration comparison in urban and non-urban areas of Florida
Advances Environmental Research. 8:137-146

6 Chirenje, T.,L. Q. Ma, M. Szulczewski, R. Littell, K. M. Portier and E. Zillioux.   2003.
Soil arsenic distribution in two Florida cities: Gainesville and Miami
J. Environ. Qual. 32:109-119.

5 Chen, M. L. Q. Ma, and Willie G. Harris. 2002.
Arsenic concentrations in Florida surface soils: influence of soil type and properties
Soil Sci. Soc. Am. J. 66:632-640.

4 Chirenje, T.L. Q. Ma, and E. Zillioux. 2002.
Determination of arsenic background concentrations in urban soils
The Scientific World JOURNAL 2:1404-1417.

3 Chen, M. L.Q. Ma, C. G. Hoogeweg, and W.G. Harris. 2001.
Arsenic background concentrations in Florida surface soils: determination and interpretation
J. Environ. Forensics. 2:117-126.

2 Chirenje, T. L.Q. Ma, A.G. Hornsby, K. Portier, W.G. Harris, and E. J. Zillioux. 2001.
Protocol development for assessing arsenic background concentrations in Florida urban soils
J. Environ. Forensics. 2:141-153.

1 Zillioux, E. J., Chirenje, T., P. Cline, T.W. Fitzpatrick, D.J. Folkes, S.C. Gautie, R.D. Jones, Z.P. Kulakowski and L.Q. Ma . 2001.
Conflict resolution associated with arsenic background definition: a panel discussion
J. Environ. Forensics. 2:169-175.

CCA treated woods (2)

2 Cao, X. and Lena Q. Ma. 2004.
Effects of Compost and Phosphate on Plant arsenic Uptake from Soils near pressure-treated wood
Environment Pollution. 132: 435-442

1 Chirenje, T., L.Q. Ma, C. Clark, and M. Reeves. 2003.
Copper, Cr and As distribution in soils adjacent to pressure-treated decks, fences and poles.
Environ. Pollution. 124:407-417

Colloids and heavy metals in soils (6)

6 Gao, B., Y. Luo, Y. Dong and L.Q. Ma. 2009.
Colloid deposition, release and association with heavy metals in soils
J. Critical Rev. Environ. Sci. Technol. Accepted.

5 Ma, L.Q. and Y. Dong. 2004.
Effects of incubation on solubility and mobility of trace metals in two contaminated soils
Environ. Pollution. 130:301-307.

4 Ma, L.Q. and Y. Dong. 2004.
Effects of incubation on solubility and mobility of trace metals in two contaminated soils
Environ. Pollution. 130:301-307.

3 Ma, L.Q., Y. Dong and Q. Zhou. 2004.
Relation of relative colloid stability ratio and colloid release in two lead-contaminated soils
Water Soil Air Pollution. 160:343-355.

2 Dong, Y., L.Q. Ma and R.D. Rhue. 2000.
Relation of Pb solubility and Fe partitioning in soils.
Environ. Pollution. 110:515-522.

1 Tan, Z., W.G. Harris and L.Q. Ma. 2000.
Comparison of groundwater colloids in adjoining soils of Florida flatwood
Soil Sci.  165:124-134.

Compost application in soils (4)

4 Rivero, C, T. Chirenje, L.Q. Ma, and G.A. Martinez. 2004.
Influence of compost on soil organic matter quality under tropical conditions.
Geoderma. 123: 355-361.

3 Wu, L., and L. Q. Ma. 2002.
Relationship between compost stability and extractable organic carbon.
J. Environ. Qual. 31:1323-1328.

2 Wu, L. and L.Q. Ma. 2001.
Impacts of sample storage on compost stability and maturity evaluation.
J. Environ.Qual. 30:222-228.

1 Wu, L., L.Q. Ma and G.A. Martinez. 2000.
Comparison of methods for evaluating stability and maturity of biosolids compost.
J. Environ. Qual. 29:424-429.

Digestion methods for metal analysis in soils (2)

2 Chen, M. and L.Q. Ma. 2001.
Comparison of three aqua regia digestion methods for analyzing 16 elements in soils
Soil Sci. Soc. Am. J. 65:491-499.

1 Chen, M. and L.Q. Ma. 1998.
Comparison of four EPA digestion methods for trace metals using certified and Florida soils.
J. Environ. Qual. 27:1294-1300

Lead chemistry in shooting range soils (7)

7 Cao, X. and L.Q. Ma. 2007
Transformation of lead bullets and phosphate-induced lead immobilization at shooting range sites.
In Rachel H. Plattenberg (ed). Environmental Pollution: New Research.
Nova Science Publishers, New York, pp. 99-119.

6 Ma, L.Q., D.W. Hardison Jr., W.G. Harris, X. Cao, and Qixing Zhou. 2007.
Effects of soil property and soil amendment on weathering of abraded metallic Pb in shooting ranges
Water Air Soil Pollution. 178:297-307.

5 Hardison Jr., D.W., L.Q. Ma, T. Luongo, and W.G. Harris.   2004.
Lead Contamination in Shooting Range Soils from Abrasion of Lead Bullets and subsequent weathering
Sci. Total Environment.   328:175-183.

4 Cao, X., L.Q. Ma, M. Chen, D. Hardison, and W. Harris.  2003.
Lead transformation and distribution in Florida shooting range soils.
Sci. Total Environment. 307:179 -189.

3 Cao, R.X., L.Q. Ma, M. Chen, D. Hardison, and W.G. Harris.  2003. 
Weathering of lead bullets and their environmental effects at outdoor shooting ranges
J. Environ. Qual.  32: 526-534.

2 Chen, M., L.Q. Ma, W.G. Harris, and X. Cao. 2002.
Characterization of Pb in soils of a rifle/pistol shooting range in Central Florida.
Soil Sediment Contamination.  11:1-17.

1 Chen, M. L. Q. Ma, and Willie G. Harris. 2001.
Distribution of Pb and As in soil at a shooting range in Central Florida
Soil Crop Sci. Soc. Florida Proc.  60:15-20.

Metal accumulation by plants (4)

4 Ouynag, Y. and L.Q. Ma. 2005.
Simulation of phytoremediation of a TNT-contaminated soil using CTSPAC model
J. Environ. Qual. 34:1490-1496.

3 Srivastava M. , L.Q. Ma, and J. Cotruvo. 2005.
Uptake and distribution of selenium in different fern species
Int. J. Phytoremediation. In press.

2 Wei, S, Q. Zhou, X. Wang, K. Zhang, G. Guo and L.Q. Ma. 2005.
A newly-discovered Cd-hyperaccumulator So-lanum nigrum L.
Chinese. Sci. Bulletin. 50: 33-38.

1 Yoon, J., X. Cao, Q. Zhou, and L.Q. Ma. 2006.
Accumulation of Pb, Cu, and Zn in native plants growing on a contaminated Florida site  
Sci. Total Environment.  368: 456–464.

Metal background concentrations in Florida soils (4)

4 Chirenje, T., L.Q. Ma, M. Reeves, and M. Szulczewski. 2004.
Lead distributions in urban soils of two Florida cities: Gainesville and Miami
Geoderma. 119:113-120.
3 Chen, M. , Ma, L. Q., and Y.C. Li. 2000.
Concentrations of P, K, Al, Fe, Mn, Cu, Zn, and As in Marl soils from South Florida.
Soil Crop Sci. Soc. Florida Proc. 59:124-129.

2 Chen, M., L.Q. Ma and W. Harris. 1999.
Baseline concentrations of 15 trace elements in Florida surface soils.
J. Environ. Qual. 28:1173-1181.

1 Ma, L.Q., F. Tan and W.G. Harris. 1997.
Concentrations and distributions of 11 elements in Florida soils.

J. Environ. Qual. 26:769-775.

Metal chemistry in soils (11)

11 Appel Appel, C., L.Q. Ma, and D. Rhue. 2008.
Sequential Sorption of Pb and Cd in Tropical Soils
Environ. Pollution. 55:132-140.

10 Guo, G., Q. Zhou and L.Q. Ma. 2006.
Availability and assessment of fixing additives for the in situ remediation of heavy metal contaminated soils: a review
Environmental Monitoring Assessment. 116: 513-528

9 Appel, C., L.Q. Ma, and D. Rhue. 2003.
Selectivities of potassium/calcium and potassium/lead exchange in two tropical soils.
Soil Sci. Soc. Am. J. 67:1707-1714.

8 Appel, C., L.Q. Ma, D. Rhue, and E. Kennelley. 2003.
Determination of zero point of charge in soils and minerals: method comparison
Geoderma. 113:77- 93.

7 Appel, C., L.Q. Ma, D. Rhue, and W. Reve. 2002.
Heats of K/Ca and K/Pb exchange in two tropical soils as measured by flow calorimetry
Soil Sci. 167:773-781.

6 Appel, C., and L.Q. Ma. 2002.
Concentration, pH, and surface charge effects on Cd/Pb sorption in three tropical soils
J. Environ. Qual. 31:581-589.

5 Ma, L.Q. and G.N. Rao. 1997.
Chemical fractionation of trace metals in contaminated soils.

J. Environ. Qual. 26:259-264.

4 Ma, L.Q. and W.L. Lindsay. 1995.
Estimation of Cd²⁺and Ni²⁺ activities in contaminated and uncontaminated soils by chelation.

Geoderma. 68:123-133.

3 Ma, L.Q. and W.L. Lindsay. 1993.
Measurement of free Zn²⁺activities in uncontaminated and contaminated soils using chelation.

Soil Sci. Soc. Am. J. 57:963-967.

2 Ma, L.Q. and W.L. Lindsay. 1990.
Divalent zinc activity in arid-zone soils by chelation.
Soil Sci. Soc. Am. J. 54:719-722.

1 Singh, S.P., L.Q. Ma, F.M.G. Tack and M.G.Verloo. 2000.
Trace metal leachability from land disposed dredged sediments .
J. Environ. Qual. 29:1124-1132.

Papermill ash and sludge in soils (9)

9 Wu, L., T. Chirenje, and L. Q. Ma. 2006.
Effects of moisture and nitrogen on the decomposition and quality of papermill sludge and ash during laboratory incubation
Soil Air Water Pollution. In press.

8 Chirenje, T., L.Q. Ma and L. Lu. 2006.
Retention of Cd, Cu, Pb and Zn by wood ash, lime and fume dust
Water Air Soil Pollut. 171:301-314.

7 Chirenje, T. and L.Q. Ma. 2002.
Impacts of high-volume papermill ash amendment on soil properties and nutrient status.
Commun. Soil Sci. Plant Anal. 33:1-17.

6 Chirenje, T., L.Q. Ma and C. Rivera. 2002.
Leachability of Cu and Ni in wood ash-amended soil as impacted by humic and fulvic acid.
Geoderma. 108:31-47.

5 Chirenje, T., L.Q. Ma and C. Rivera. 2002.
Effects of humic and fulvic acids on As and Cr leachability in wood ash-amended soils.
Soil Sediment Contamination. 11:359-375.

4 Chirenje, T. and L.Q. Ma. 1999.
Effects of acidification on metal mobility in a papermill-ash amended soil.
J. Environ. Qual. 28:760-766.

3 Chirenje, T. and L.Q. Ma. 1999.
Greenhouse study of slash pine responses to fertilizer in a papermill-ash amended soil.
Soil Crop Sci. Soc. Florida Proc. 58:760-6.

2 Vest, M. M, T. Chirenje and L.Q. Ma. 1999.
Study of slash pine response to wood fired boiler ash and fertilizer in a boiler ash amended soil.
TAPPI Int. Environ. Conf. Proc. 3 :1131-1145.

1 Xiao, C., L.Q. Ma, and T. Sarigumba. 1999.
Effects of soil on trace metal leachability from papermill ashes and sludge.
J. Environ. Qual. 28:321-333.

Phosphate background concentrations in Florida soils (2)
2 Chen, M. and L.Q. Ma. 2001.
Taxonomic and geographic distribution of total P in Florida surface soils
Soil Sci. Soc. Am. J. 65:1539-1547.

1 Chen, M. , Ma, L.Q., and W.G. Harris. 1999.
Assessment of P concentrations in different types of Florida surface soils.
Soil Crop Sci. Soc. Florida Proc. 58:58-62.

Phosphate-induced metal immobilization in contaminated soils (20)

20 Cao, X. L.Q. Ma, and A. Shiralipour. 2009.
Using phosphate rock to immobilize lead, copper, and zinc in contaminated soils
J. Haz. Mat. 164: 555-564.

19 Cao, X., Lena Q. Ma, S. Singh, Q. Zhou. 2008.
Phosphate-induced lead immobilization from different lead minerals in soils under varying pH conditions
Environment Pollution. 152: 184-192

18 Melamed, R. and L.Q. Ma. 2008.
Phosphate-induced Pb immobilization in contaminated soils: mechanisms, assessment and field application
In: Biophysico-Chemical Processes of Heavy Metals and Metalloids in Soil Environments.
Violante, A., P.M. Huang and G. Stotzsky (eds.). John Wiley & Sons, Chichester, England.

17 Yoon, J., X. Cao, and L.Q. Ma. 2007
Application methods affect P-induced Pb immobilization from a contaminated soil
J. Environ. Qual. 36:373-378

16   Singh, S.P., L.Q. Ma, and M.J. Hendry. 2006.

Characterization of aqueous lead removal phosphatic clay: equilibrium and kinetics studies.

J. Haz. Mat. 136: 654-662.

15 Singh, S.P., L.Q. Ma, and M.J. Hendry. 2006.
Characterization of aqueous lead removal phosphatic clay: equilibrium and kinetics studies.

J. Haz. Mat. 136: 654-662.

14 Cao, X. Lena Q. Ma, Dean Rhue, and Chip Appel. 2004.
Mechanisms of Lead, Copper, and Zinc Immobilization by Phosphate Rock
Environ. Pollution. 131:435-444.

13 Cao, R.X, L.Q. Ma, S.P. Singh, M. Chen, and W. Harris. 2003.
Phosphate-induced metal immobilization in a contaminated site
Environ. Pollution. 122:19-28.

12 Chen, M., L.Q. Ma, X. Cao, R. Melamed and S.P. Singh. 2003.
Field demonstration of in situ immobilization of soil Pb using P amendments
Advances Environmental Research. 8:93-102

11 Melamed, R., X. Cao, Chen, M. and L.Q. Ma. 2003.

Field assessment of Pb immobilization in a contaminated soil using P amendments.

Sci. Total Environment. 305:117-127.

10 Cao, R.X., L.Q. Ma, M. Chen, S.P. Singh, and W.G. Harris. 2002.
Impacts of phosphate amendments on lead biogeochemistry in a contaminated site
Environ. Sci. Technol. 36: 5296-5304.

9 Singh, S.P., L.Q. Ma, and W.G. Harris. 2001.
Heavy metal interactions with phosphatic clay: sorption and desorption behavior

J. Environ. Qual. 30:1961-1968.

8 Ma, L.Q. and G.N. Rao. 1999.
Aqueous Pb reduction in Pb-contaminated soils by Florida phosphate rocks.
Water Soil Air Pollution. 110:1-16.

7 Ma, L.Q. and G.N. Rao. 1997.
The effect of phosphate rock on sequential chemical extraction of lead in contaminated soils.

J. Environ. Qual. 26: 788-794.

6 Ma, L.Q., A.L. Choate, and G.N. Rao. 1997.
Effects of incubation and phosphate rock on Pb extractability and speciation in contaminated soils.

J. Environ. Qual. 26: 801-807.

5 Ma, L.Q. 1996.
Factors influencing the effectiveness and stability of aqueous Pb immobilization by hydroxyapatite.

J. Environ. Qual. 25:1420-1429.

4 Ma, L.Q., T.J. Logan, and S.J. Traina. 1995.
Lead immobilization from aqueous solutions and contaminated soils using phosphate rocks.

Environ. Sci. Technol. 29:1118-1126.

3 Ma, L.Q., S.J. Traina, T.J. Logan, and J.A. Ryan. 1994.
Effects of aqueous Al, Cd, Cu, Fe, Ni, and Zn on Pb immobilization by hydroxyapatite.

Environ. Sci. Technol. 28:1219-1228.

2 Ma, L.Q., T.J. Logan, S.J. Traina, and J.A.Ryan. 1994.
Effects of NO₃, Cl, F, SO₄ and CO₃ on Pb immobilization by hydroxyapatite.

Environ. Sci. Technol. 28:408-418.

1 Ma, L.Q., S.J. Traina, T.J. Logan, and J.A. Ryan. 1993.
In situ Pb immobilization by apatite.

Environ. Sci. Technol. 27:1803-1810.