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Person Details: Brian J. Mailloux

Superfund Research Program

Brian J. Mailloux

Barnard College
Department of Environmental Science
404G Altschul Hall
3009 Broadway
New York, New York 10025-6598
Phone: 212-854-7956
Fax: 212-854-5760


Research Briefs




  • Mushtaq N, Farooqi A, Khattak JA, Hussain I, Mailloux BJ, Bostick BC, Nghiem AA, Ellis T, van Geen AF. 2024. Elevated arsenic concentrations in groundwater of the Upper Indus Plain of Pakistan across a range of redox conditions. Sci Total Environ 912:doi:10.1016/j.scitotenv.2023.168574 PMID:38000757


  • Whaley-Martin K, San Pedro R, Mailloux BJ, Bostick BC, Ahmed KM, Mozumder R, Ellis T, van Geen AF, Slater GF. 2023. Microbial utilization of recently fixed, plant-derived organic carbon in shallow Holocene and Pleistocene aquifers in Bangladesh. Organic Geochemistry 177:104556. doi:10.1016/j.orggeochem.2023.104556


  • Khattak JA, Farooqi A, Hussain I, Kumar A, Singh CK, Mailloux BJ, Bostick BC, Ellis T, van Geen AF. 2022. Groundwater fluoride across the Punjab plains of Pakistan and India: Distribution and underlying mechanisms. Sci Total Environ 806:doi:10.1016/j.scitotenv.2021.151353 PMID:34743882


  • Kumar A, Singh CK, Bostick BC, Nghiem AA, Mailloux BJ, van Geen AF. 2020. Regulation of groundwater arsenic concentrations in the Ravi, Beas, and Sutlej floodplains of Punjab, India. Geochim Cosmochim Acta 283:265. doi:10.1016/j.gca.2020.03.003
  • Mailloux BJ, Procopio NA, Bakker M, Chen T, Choudhury I, Ahmed KM, Mozumder R, Ellis T, Chillrud SN, van Geen AF. 2020. Recommended sampling intervals for arsenic in private wells. Ground Water 10:doi:10.1111/gwat.13020 PMID:32483831
  • Mihajlov I, Mozumder R, Bostick BC, Stute M, Mailloux BJ, Knappett PS, Choudhury I, Ahmed KM, Schlosser P, van Geen AF. 2020. Arsenic contamination of Bangladesh aquifers exacerbated by clay layers. Nat Commun 11:2244. doi:10.1038/s41467-020-16104-z PMID:32382006
  • Mozumder R, Bostick BC, Selim M, Islam M, Shoenfelt EM, Ellis T, Mailloux BJ, Choudhury I, Ahmed KM, van Geen AF. 2020. Similar retardation of arsenic in gray Holocene and orange Pleistocene sediments: Evidence from field-based column experiments in Bangladesh. Water Res 183:12. doi:10.1016/j.watres.2020.116081 PMID:32784107
  • Mozumder R, Michael HA, Mihajlov I, Khan MR, Knappett PS, Bostick BC, Mailloux BJ, Ahmed KM, Choudhury I, Koffman T, Ellis T, Whaley-Martin K, San Pedro R, Slater GF, Stute M, Schlosser P, van Geen AF. 2020. Origin of groundwater arsenic in a rural Pleistocene aquifer in Bangladesh depressurized by distal municipal pumping. Water Resour Res 56:26. doi:10.1029/2020WR027178
  • Nghiem AA, Shen Y, Stahl MO, Sun J, Haque E, DeYoung B, Nguyen K, Mai TT, Trang PK, Pham HV, Mailloux BJ, Harvey CF, van Geen AF, Bostick BC. 2020. Aquifer-scale observations of iron redox transformations in arsenic-impacted environments to predict future contamination. Environ Sci Technol Lett 7:916-922. doi:10.1021/acs.estlett.0c00672
  • Nigra AE, Chen Q, Chillrud SN, Wang L, Harvey DE, Mailloux BJ, Factor-Litvak P, Navas-Acien A. 2020. Inequalities in public water arsenic concentrations in counties and community water systems across the United States, 2006-2011. Environ Health Perspect 128(12):127001. doi:10.1289/EHP7313 PMID:33295795 PMCID:PMC7724967


  • Landes FC, Paltseva A, Sobolewski JM, Cheng Z, Ellis T, Mailloux BJ, van Geen AF. 2019. A field procedure to screen soil for hazardous lead. Anal Chem 91(13):8192-8198. doi:10.1021/acs.analchem.9b00681 PMID:31177771 PMCID:PMC6610547
  • Mailloux BJ, Kim C, Kichuk T, Nguyen K, Precht C, Wang S, Jewell TN, Karaoz U, Brodie EL, Williams KH, Beller HR, Buchholz BA. 2019. Paired RNA radiocarbon and sequencing analyses indicate the importance of autotrophy in a shallow alluvial aquifer. Sci Rep 9(1):10370. doi:10.1038/s41598-019-46663-1 PMID:31316095 PMCID:PMC6637170
  • Nghiem AA, Stahl MO, Mailloux BJ, Mai TT, Trang PK, Viet PH, Harvey CF, van Geen AF, Bostick BC. 2019. Quantifying riverine recharge impacts on redox contitions and arsenic released in groundwater aquifers along the Red River, Vietnam. Water Resour Res doi:10.1029/2019WR024816


  • Haque E, Mailloux BJ, de Wolff D, Gilioli S, Kelly C, Ahmed EB, Small C, Ahmed KM, van Geen AF, Bostick BC. 2018. Quantitative drinking water arsenic concentrations in field environments using mobile phone photometry of field kits. Sci Total Environ 618:579-585. doi:10.1016/j.scitotenv.2016.12.123 PMID:29102200 PMCID:PMC5773362
  • Sun J, Bostick BC, Mailloux BJ, Jamieson J, Yan B, Pitiranggon M, Chillrud SN. 2018. Arsenic mobilization from iron oxides in the presence of oxalic acid under hydrodynamic conditions. Chemosphere 212:219-227. doi:10.1016/j.chemosphere.2018.08.058 PMID:30144683
  • Sun J, Mailloux BJ, Chillrud SN, van Geen AF, Thompson A, Bostick BC. 2018. Simultaneously quantifying ferrihydrite and goethite in natural sediments using the method of standard additions with X-ray absorption spectroscopy. Chemical Geology 476:248-259. doi:10.1016/j.chemgeo.2017.11.021 PMID:29353912 PMCID:PMC5771421
  • Sun J, Prommer H, Siade AJ, Chillrud SN, Mailloux BJ, Bostick BC. 2018. Model-based analysis of arsenic immobilization via iron mineral transformation under advective flows. Environ Sci Technol 52(16):9243-9253. doi:10.1021/acs.est.8b01762 PMID:30039966


  • Gnanaprakasam ET, Lloyd JR, Boothman C, Ahmed KM, Choudhury I, Bostick BC, van Geen AF, Mailloux BJ. 2017. Microbial community structure and arsenic biogeochemistry in two arsenic-impacted aquifers in Bangladesh. MBio 8(6):e01326-17. doi:10.1128/mBio.01326-17 PMID:29184025 PMCID:PMC5705915
  • Keimowitz AR, Mailloux BJ, Wovkulich K, Harkness JS, Ross JM, Chillrud SN. 2017. Manganese redox buffering limits arsenic release from contaminated sediments, Union Lake, New Jersey. Appl Geochem 77:24-30. doi:10.1016/j.apgeochem.2016.10.003 PMID:29238131 PMCID:PMC5726284
  • Whaley-Martin K, Mailloux BJ, van Geen AF, Bostick BC, Ahmed KM, Choudhury I, Slater GF. 2017. Human and livestock waste as a reduced carbon source contributing to the release of arsenic to shallow Bangladesh groundwater. Sci Total Environ 595:63-71. doi:10.1016/j.scitotenv.2017.03.234 PMID:28388451


  • Khan MR, Knappett PS, Ahmed KM, Bostick BC, Mailloux BJ, Mozumder R, Harvey CF, van Geen AF, Michael HA. 2016. Megacity pumping and preferential flow threaten groundwater quality. Nat Commun 7:12833. doi:10.1038/ncomms12833 PMID:27673729 PMCID:PMC5052627
  • Knappett PS, Mailloux BJ, Choudhury I, Khan MR, Michael HA, Barua S, Mondal DR, Steckler MS, Akhter S, Ahmed KM, Bostick BC, Harvey CF, Shamsudduha M, Shuai P, Mihajlov I, Mozumder R, van Geen AF. 2016. Vulnerability of low-arsenic aquifers to municipal pumping in Bangladesh. J Hydrol 539:674-686. doi:10.1016/j.jhydrol.2016.05.035 PMID:28966395 PMCID:PMC5617134
  • Mihajlov I, Stute M, Schlosser P, Mailloux BJ, Zheng Y, Choudhury I, Ahmed KM, van Geen AF. 2016. Recharge of low-arsenic aquifers tapped by community wells in Araihazar, Bangladesh, inferred from environmental isotopes. Water Resour Res 52(5):3324-3349. doi:10.1002/2015WR018224 PMID:28966406 PMCID:PMC5617127
  • Sun J, Bostick BC, Mailloux BJ, Ross JM, Chillrud SN. 2016. Effect of oxalic acid treatment on sediment arsenic concentrations and lability under reducing conditions. J Hazard Mater 311:125-133. doi:10.1016/j.jhazmat.2016.02.060 PMID:26970042 PMCID:PMC4826786
  • Sun J, Bostick BC, Mailloux BJ, Ross JM, Chillrud SN. 2016. Use of oxalic acid for mobilizing arsenic from contaminated sediments and decreasing vulnerability to reduction. J Hazard Mater 311:125-133.
  • Sun J, Chillrud SN, Mailloux BJ, Bostick BC. 2016. In situ magnetite formation and long-term arsenic immobilization under advective flow conditions. Environ Sci Technol 50(18):10162-10171. doi:10.1021/acs.est.6b02362 PMID:27533278
  • Sun J, Chillrud SN, Mailloux BJ, Stute M, Singh R, Dong H, Lepre CJ, Bostick BC. 2016. Enhanced and stabilized arsenic retention in microcosms through the microbial oxidation of ferrous iron by nitrate. Chemosphere 144:1106-1115. doi:10.1016/j.chemosphere.2015.09.045 PMID:26454120 PMCID:PMC4779597
  • Sun J, Quicksall AN, Chillrud SN, Mailloux BJ, Bostick BC. 2016. Arsenic mobilization from sediments in microcosms under sulfate reduction. Chemosphere 153:254-261. doi:10.1016/j.chemosphere.2016.02.117 PMID:27037658 PMCID:PMC4837041
  • van Geen AF, Ahmed KM, Ahmed EB, Choudhury I, Mozumder R, Bostick BC, Mailloux BJ. 2016. Inequitable allocation of deep community wells for reducing arsenic exposure in Bangladesh. J Water Sanit Hyg Dev 6(1):142-150. doi:10.2166/washdev.2015.115 PMID:27087915 PMCID:PMC4827352
  • Whaley-Martin K, Mailloux BJ, van Geen AF, Bostick BC, Silvern R, Kim C, Ahmed KM, Choudhury I, Slater GF. 2016. Stimulation of microbially mediated arsenic release in Bangladesh aquifers by young carbon indicated by radiocarbon analysis of sedimentary bacterial lipids. Environ Sci Technol 50(14):7353-7363. doi:10.1021/acs.est.6b00868 PMID:27333443



  • Feighery J, Mailloux BJ, Ferguson AS, Ahmed KM, van Geen AF, Culligan PJ. 2013. Transport of E. coli in aquifer sediments of Bangladesh: Implications for widespread microbial contamination of groundwater. Water Resour Res 49(7):3897-3911. doi:10.1002/wrcr.20289 PMID:24653543 PMCID:PMC3956056
  • Mailloux BJ, Trembath-Reichert E, Cheung J, Watson M, Stute M, Freyer GA, Ferguson AS, Ahmed KM, Alam M, Buchholz BA, Thomas J, Layton AC, Zheng Y, Bostick BC, van Geen AF. 2013. Advection of surface-derived organic carbon fuels microbial reduction in Bangladesh groundwater. Proc Natl Acad Sci U S A 110(14):5331-5335. doi:10.1073/pnas.1213141110 PMID:23487743 PMCID:PMC3619377


  • Ferguson AS, Layton AC, Mailloux BJ, Culligan PJ, Williams DE, Smartt AE, Sayler GS, Feighery J, McKay LD, Knappett PS, Alexandrova E, Arbit T, Emch M, Escamilla V, Ahmed KM, Alam M, Streatfield PK, Yunus M, van Geen AF. 2012. Comparison of fecal indicators with pathogenic bacteria and rotavirus in groundwater. Sci Total Environ 431:314-22. doi:10.1016/j.scitotenv.2012.05.060 PMID:22705866 PMCID:PMC3587152
  • Knappett PS, McKay LD, Layton AC, Williams DE, Alam M, Hug M, Mey JL, Feighery J, Culligan PJ, Mailloux BJ, Zhuang J, Escamilla V, Emch M, Perfect E, Sayler GS, Ahmed KM, van Geen AF. 2012. Implications of fecal bacteria input from latrine-polluted ponds for wells in sandy aquifers. Environ Sci Technol 46:1361-70. doi:10.1021/es202773w PMID:22191430 PMCID:PMC3602418
  • Knappett PS, McKay LD, Layton AC, Williams DE, Alam M, Mailloux BJ, Ferguson AS, Culligan PJ, Serre ML, Emch M, Ahmed KM, Sayler GS, van Geen AF. 2012. Unsealed tubewells lead to increased fecal contamination of drinking water. J Water Health 10:565-78. doi:10.2166/wh.2012.102 PMID:23165714 PMCID:PMC3612880
  • Wovkulich K, Mailloux BJ, Bostick BC, Dong H, Bishop ME, Chillrud SN. 2012. Use of microfocused X-ray techniques to investigate the mobilization of arsenic by oxalic acid. Geochim Cosmochim Acta 91:254-270. doi:10.1016/j.gca.2012.05.012 PMID:23175572 PMCID:PMC3501129


  • Dhar RK, Zheng Y, Saltikov CW, Radloff KA, Mailloux BJ, Ahmed KM, van Geen AF. 2011. Microbes enhance mobility of arsenic in pleistocene aquifer sand from Bangladesh. Environ Sci Technol 45(7):2648-2654. doi:10.1021/es1022015 PMID:21405115
  • Ferguson AS, Mailloux BJ, Ahmed KM, van Geen AF, McKay LD, Culligan PJ. 2011. Hand-pumps as reservoirs for microbial contamination of well water. J Water Health 9(4):708-717. doi:10.2166/wh.2011.106 PMID:22048430
  • Knappett PS, Escamilla V, Layton AC, McKay LD, Emch M, Williams DE, Huq R, Alam M, Farhana L, Mailloux BJ, Ferguson AS, Sayler GS, Ahmed KM, van Geen AF. 2011. Impact of population and latrines on fecal contamination of ponds in rural Bangladesh. Sci Total Environ 409(17):3174-3182. doi:10.1016/j.scitotenv.2011.04.043 PMID:21632095 PMCID:PMC3150537
  • Leber J, Rahman MM, Ahmed KM, Mailloux BJ, van Geen AF. 2011. Contrasting influence of geology on E. coli and arsenic in aquifers of Bangladesh. Ground Water 49(1):111-123. doi:10.1111/j.1745-6584.2010.00689.x PMID:20236332
  • van Geen AF, Ahmed KM, Akita Y, Alam M, Culligan PJ, Emch M, Escamilla V, Feighery J, Ferguson AS, Knappett PS, Layton AC, Mailloux BJ, McKay LD, Mey JL, Serre ML, Streatfield PK, Wu J, Yunus M. 2011. Fecal contamination of shallow tubewells in Bangladesh inversely related to arsenic. Environ Sci Technol 45(4):1199-1205. doi:10.1021/es103192b PMID:21226536 PMCID:PMC3037737
  • Wovkulich K, Stute M, Protus T, Mailloux BJ, Chillrud SN. 2011. Injection system for multiwell injection using a single pump. Ground Water Monit Remediat 31(1):79-85. doi:10.1111/j.1745-6592.2011.01325.x PMID:26140014 PMCID:PMC4486016
  • Wu J, van Geen AF, Ahmed KM, Alam Y, Culligan PJ, Escamilla V, Feighery J, Ferguson AS, Knappett PS, Mailloux BJ, McKay LD, Serre ML, Streatfield PK, Yunus M, Emch M. 2011. Increase in diarrheal disease associated with arsenic mitigation in Bangladesh. PLoS One 6(12):e29593. doi:10.1371/journal.pone.0029593 PMID:22216326 PMCID:PMC3247276



  • Datta S, Mailloux BJ, Jung H, Hoque MA, Stute M, Ahmed KM, Zheng Y. 2009. Redox trapping of arsenic during groundwater discharge in sediments from the Meghna riverbank in Bangladesh. Proc Natl Acad Sci U S A 106(40):16930-16935. doi:10.1073/pnas.0908168106 PMID:19805180 PMCID:PMC2761342
  • Mailloux BJ, Alexandrova E, Keimowitz AR, Wovkulich K, Freyer GA, Herron M, Stolz JF, Kenna TC, Pichler T, Polizzotto ML, Dong H, Bishop ME, Knappett PS. 2009. Microbial mineral weathering for nutrient acquisition releases arsenic. Appl Environ Microbiol 75(8):2558-2565. doi:10.1128/AEM.02440-07 PMID:19251899 PMCID:PMC2675215


  • Horneman AH, Stute M, Schlosser P, Smethie WM, Santella RM, Ho DT, Mailloux BJ, Gorman E, Zheng Y, van Geen AF. 2008. Degradation rates of CFC-11, CFC-12 and CFC-113 in anoxic shallow aquifers of Araihazar, Bangladesh. J Contam Hydrol 97(1-2):27-41. doi:10.1016/j.jconhyd.2007.12.001 PMID:18262680
  • Radloff KA, Manning AR, Mailloux BJ, Zheng Y, Rahman MM, Huq MR, Ahmed KM, Stute M, van Geen AF. 2008. Considerations for conducting incubations to study the mechanisms of As release in reducing groundwater aquifers. Appl Geochem 23(11):3224-3235. doi:10.1016/j.apgeochem.2008.07.009 PMID:19884962 PMCID:PMC2614277
  • van Geen AF, Zheng Y, Goodbred SL, Horneman AH, Aziz Z, Cheng Z, Stute M, Mailloux BJ, Weinman B, Hoque MA, Seddique AA, Ahmed A. 2008. Flushing history as a hydrogeological control on the regional distribution of arsenic in shallow groundwater of the Bengal Basin. Environ Sci Technol 42(7):2283-2288. PMID:18504954 PMCID:PMC3050603


  • Keimowitz AR, Mailloux BJ, Colery P, Stute M, Simpson HJ, Chillrud SN. 2007. Laboratory investigations of enhanced sulfate reduction as a groundwater arsenic remediation strategy. Environ Sci Technol 41(19):6718-6724. PMID:17969686 PMCID:PMC3155844
  • Radloff KA, Cheng Z, Rahman MW, Ahmed KM, Mailloux BJ, Juhl AR, Schlosser P, van Geen AF. 2007. Mobilization of arsenic during one-year incubations of grey aquifer sands from Araihazar, Bangladesh. Environ Sci Technol 41:731-754. PMID:17547190
  • Wovkulich K, Simpson HJ, Stute M, Mailloux BJ, Keimowitz AR, Cheng Z, Chillrud SN. 2007. Improving arsenic remediation through chemistry: laboratory and modeling data for a Superfund site highly contaminated with arsenic (Vineland, NJ). Superfund Basic Research Symposium
  • Wovkulich K, Stute M, Simpson HJ, Mailloux BJ, Lacko A, Keimowitz AR, Cheng Z, Chillrud SN. 2007. Mobilization of arsenic from contaminated sediments for improved remediation. Superfund Basic Research Symposium


  • van Geen AF, Zheng Y, Cheng Z, Aziz Z, Horneman AH, Dhar RK, Mailloux BJ, Stute M, Weinman B, Goodbred SL, Seddique AA, Hoque MA, Ahmed KM. 2006. A transect of groundwater and sediment properties in Araihazar, Bangladesh: Further evidence of decoupling between As and Fe mobilization. Chemical Geology 228(1-3):85-96.
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