Alexander van Geen

Summary

Affiliation: Columbia University
Country: USA

Publications

  1. pmc Comparison of two blanket surveys of arsenic in tubewells conducted 12 years apart in a 25 km(2) area of Bangladesh
    Alexander van Geen
    Lamont Doherty Earth Observatory of Columbia University Palisades, NY, USA Electronic address
    Sci Total Environ 488:484-92. 2014
  2. pmc Increase in diarrheal disease associated with arsenic mitigation in Bangladesh
    Jianyong Wu
    Department of Environmental Sciences and Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
    PLoS ONE 6:e29593. 2011
  3. pmc Confirmation of elevated arsenic levels in groundwater of Myanmar
    Alexander van Geen
    Lamont Doherty Earth Observatory of Columbia University, Palisades, NY 10964, USA Electronic address
    Sci Total Environ 478:21-4. 2014
  4. pmc Retardation of arsenic transport through a Pleistocene aquifer
    Alexander van Geen
    Lamont Doherty Earth Observatory, Columbia University, Palisades, New York 10964, USA
    Nature 501:204-7. 2013
  5. pmc A cluster-based randomized controlled trial promoting community participation in arsenic mitigation efforts in Bangladesh
    Christine Marie George
    Department of International Health, Program in Global Disease Epidemiology and Control, Johns Hopkins Bloomberg School of Public, 615 N, Wolfe Street, Room E5535, Baltimore, Maryland 21205 2103, USA
    Environ Health 11:41. 2012
  6. pmc Fecal contamination of shallow tubewells in Bangladesh inversely related to arsenic
    Alexander van Geen
    Lamont Doherty Earth Observatory of Columbia University, Palisades, NY 10964, USA
    Environ Sci Technol 45:1199-205. 2011
  7. pmc Lead exposure from soil in Peruvian mining towns: a national assessment supported by two contrasting examples
    Alexander van Geen
    Lamont Doherty Earth Observatory of Columbia University, Route 9W, Palisades, New York, NY 10964, USA
    Bull World Health Organ 90:878-86. 2012
  8. pmc Flushing history as a hydrogeological control on the regional distribution of arsenic in shallow groundwater of the Bengal Basin
    A van Geen
    Lamont Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA
    Environ Sci Technol 42:2283-8. 2008
  9. ncbi request reprint Impact of irrigating rice paddies with groundwater containing arsenic in Bangladesh
    A van Geen
    Lamont Doherty Earth Observatory of Columbia University, Palisades, NY 10964, USA
    Sci Total Environ 367:769-77. 2006
  10. pmc Targeting low-arsenic groundwater with mobile-phone technology in Araihazar, Bangladesh
    A van Geen
    Lamont Doherty Earth Observatory of Columbia University, Palisades, NY, 10964, USA
    J Health Popul Nutr 24:282-97. 2006

Collaborators

Detail Information

Publications54

  1. pmc Comparison of two blanket surveys of arsenic in tubewells conducted 12 years apart in a 25 km(2) area of Bangladesh
    Alexander van Geen
    Lamont Doherty Earth Observatory of Columbia University Palisades, NY, USA Electronic address
    Sci Total Environ 488:484-92. 2014
    ....
  2. pmc Increase in diarrheal disease associated with arsenic mitigation in Bangladesh
    Jianyong Wu
    Department of Environmental Sciences and Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
    PLoS ONE 6:e29593. 2011
    ..A recent study has shown, however, that shallow low-As wells are more likely to be contaminated with the fecal indicator E. coli than shallow high-As wells, suggesting that well switching might lead to an increase in diarrheal disease...
  3. pmc Confirmation of elevated arsenic levels in groundwater of Myanmar
    Alexander van Geen
    Lamont Doherty Earth Observatory of Columbia University, Palisades, NY 10964, USA Electronic address
    Sci Total Environ 478:21-4. 2014
    ..A renewed effort is thus needed to test existing wells and new wells that continue to be installed and to communicate the health risks of exposure to As for infants, children, and adults. ..
  4. pmc Retardation of arsenic transport through a Pleistocene aquifer
    Alexander van Geen
    Lamont Doherty Earth Observatory, Columbia University, Palisades, New York 10964, USA
    Nature 501:204-7. 2013
    ..Our findings suggest that arsenic contamination of Pleistocene aquifers in south and southeast Asia as a consequence of increasing levels of groundwater pumping may have been delayed by the retardation of arsenic transport. ..
  5. pmc A cluster-based randomized controlled trial promoting community participation in arsenic mitigation efforts in Bangladesh
    Christine Marie George
    Department of International Health, Program in Global Disease Epidemiology and Control, Johns Hopkins Bloomberg School of Public, 615 N, Wolfe Street, Room E5535, Baltimore, Maryland 21205 2103, USA
    Environ Health 11:41. 2012
    ....
  6. pmc Fecal contamination of shallow tubewells in Bangladesh inversely related to arsenic
    Alexander van Geen
    Lamont Doherty Earth Observatory of Columbia University, Palisades, NY 10964, USA
    Environ Sci Technol 45:1199-205. 2011
    ..coli associated with local recharge. The health implications of higher fecal contamination of shallow tubewells, to which millions of households in Bangladesh have switched in order to reduce their exposure to As, need to be evaluated...
  7. pmc Lead exposure from soil in Peruvian mining towns: a national assessment supported by two contrasting examples
    Alexander van Geen
    Lamont Doherty Earth Observatory of Columbia University, Route 9W, Palisades, New York, NY 10964, USA
    Bull World Health Organ 90:878-86. 2012
    ..To estimate the population of Peru living in the vicinity of active or former mining operations that could be exposed to lead from contaminated soil...
  8. pmc Flushing history as a hydrogeological control on the regional distribution of arsenic in shallow groundwater of the Bengal Basin
    A van Geen
    Lamont Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA
    Environ Sci Technol 42:2283-8. 2008
    ....
  9. ncbi request reprint Impact of irrigating rice paddies with groundwater containing arsenic in Bangladesh
    A van Geen
    Lamont Doherty Earth Observatory of Columbia University, Palisades, NY 10964, USA
    Sci Total Environ 367:769-77. 2006
    ....
  10. pmc Targeting low-arsenic groundwater with mobile-phone technology in Araihazar, Bangladesh
    A van Geen
    Lamont Doherty Earth Observatory of Columbia University, Palisades, NY, 10964, USA
    J Health Popul Nutr 24:282-97. 2006
    ....
  11. ncbi request reprint Monitoring 51 community wells in Araihazar, Bangladesh, for up to 5 years: implications for arsenic mitigation
    Alexander van Geen
    Lamont Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA
    J Environ Sci Health A Tox Hazard Subst Environ Eng 42:1729-40. 2007
    ..Further study is required to evaluate the health consequences of Mn exposure, but the increase in As concentrations in 4 community wells indicates that all deeper tubewells should be periodically re-tested...
  12. pmc Promotion of well-switching to mitigate the current arsenic crisis in Bangladesh
    Alexander van Geen
    Lamont Doherty Earth Observatory, Columbia University, Palisades, New York 10964, USA
    Bull World Health Organ 80:732-7. 2002
    ..To survey tube wells and households in Araihazar upazila, Bangladesh, to set the stage for a long-term epidemiological study of the consequences of chronic arsenic exposure...
  13. ncbi request reprint Reliability of a commercial kit to test groundwater for arsenic in Bangladesh
    A van Geen
    Lamont Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA
    Environ Sci Technol 39:299-303. 2005
    ....
  14. ncbi request reprint Comment on "Arsenic Mobility and Groundwater Extraction in Bangladesh" (II)
    Alexander van Geen
    Lamont Doherty Earth Observatory, Columbia University, Route 9W, Palisades, NY 10964, USA
    Science 300:584; author reply 584. 2003
  15. ncbi request reprint Testing groundwater for arsenic in Bangladesh before installing a well
    A van Geen
    Lamont Doherty Earth Observatory of Columbia University, Route 9W, Palisades, New York 10964, USA
    Environ Sci Technol 38:6783-9. 2004
    ..The device is also a useful research tool for unraveling the relationships between the As content of groundwater and the complex structure of flood plain and deltaic environments throughout South Asia...
  16. pmc Community wells to mitigate the arsenic crisis in Bangladesh
    Alexander van Geen
    Lamont Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA
    Bull World Health Organ 81:632-8. 2003
    ..To monitor the effectiveness of deep community wells in reducing exposure to elevated levels of arsenic in groundwater pumped from shallower aquifers...
  17. pmc Water arsenic exposure and intellectual function in 6-year-old children in Araihazar, Bangladesh
    Gail A Wasserman
    Department of Psychiatry, College of Physicians and Surgeons, Columbia University, New York, New York 10032, USA
    Environ Health Perspect 115:285-9. 2007
    ..We recently reported results of a cross-sectional investigation of intellectual function in 10-year-olds in Bangladesh, who had been exposed to arsenic from drinking water in their home wells...
  18. pmc Arsenic and manganese exposure and children's intellectual function
    Gail A Wasserman
    Department of Psychiatry, College of Physicians and Surgeons, Columbia University, 1051 Riverside Drive, New York City, NY 10032, USA
    Neurotoxicology 32:450-7. 2011
    ..25). Findings are consistent with other reports documenting adverse impact of both As and Mn exposure on child developmental outcomes, although associations appear muted at these relatively low exposure levels...
  19. pmc Water manganese exposure and children's intellectual function in Araihazar, Bangladesh
    Gail A Wasserman
    Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and New York State Psychiatric Institute, New York, New York 10032, USA
    Environ Health Perspect 114:124-9. 2006
    ..S. Environmental Protection Agency lifetime health advisory level. We conclude that in both Bangladesh and the United States, some children are at risk for Mn-induced neurotoxicity...
  20. pmc A dose-response study of arsenic exposure and global methylation of peripheral blood mononuclear cell DNA in Bangladeshi adults
    Megan M Niedzwiecki
    Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, New York, USA
    Environ Health Perspect 121:1306-12. 2013
    ..However, As has been associated with global DNA hypermethylation in human study populations. We hypothesized that this discrepancy may reflect a nonlinear relationship between As dose and DNA methylation...
  21. ncbi request reprint Blood arsenic as a biomarker of arsenic exposure: results from a prospective study
    Marni Hall
    Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University Medical Center, 60 Haven Avenue B1, New York, NY 10032, USA
    Toxicology 225:225-33. 2006
    ..This prospective study confirms the increased risk of skin lesions in relation to As concentrations in blood, urine and water and also establishes that BAs is a useful biomarker of As exposure in this study population...
  22. pmc Determinants of arsenic metabolism: blood arsenic metabolites, plasma folate, cobalamin, and homocysteine concentrations in maternal-newborn pairs
    Marni Hall
    Department of Environmental Health Sciences, Columbia University Medical Center, New York, New York 10032, USA
    Environ Health Perspect 115:1503-9. 2007
    ..In Bangladesh, tens of millions of people have been consuming waterborne arsenic for decades. The extent to which As is transported to the fetus during pregnancy has not been well characterized...
  23. ncbi request reprint Modification of risk of arsenic-induced skin lesions by sunlight exposure, smoking, and occupational exposures in Bangladesh
    Yu Chen
    Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York 10032, USA
    Epidemiology 17:459-67. 2006
    ..The risk of skin lesions associated with arsenic exposure from drinking water in Bangladesh is considerably greater in men than in women...
  24. ncbi request reprint Arsenic exposure from drinking water and risk of premalignant skin lesions in Bangladesh: baseline results from the Health Effects of Arsenic Longitudinal Study
    Habibul Ahsan
    Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY 10032, USA
    Am J Epidemiol 163:1138-48. 2006
    ..53, 5.44), and 5.39 (95% CI: 3.69, 7.86), respectively. The effect seemed to be influenced by gender, age, and body mass index. These findings provide information that should be considered in future research and policy decisions...
  25. pmc A prospective study of blood selenium levels and the risk of arsenic-related premalignant skin lesions
    Yu Chen
    Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA
    Cancer Epidemiol Biomarkers Prev 16:207-13. 2007
    ..The findings support the hypothesis that dietary selenium intake may reduce the incidence of arsenic-related premalignant skin lesions among populations exposed to arsenic exposure from drinking water...
  26. pmc Arsenic exposure and motor function among children in Bangladesh
    Faruque Parvez
    Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, New York, USA
    Environ Health Perspect 119:1665-70. 2011
    ..Very little is known, however, about possible associations with other neurologic outcomes such as motor function...
  27. pmc Protective effects of B vitamins and antioxidants on the risk of arsenic-related skin lesions in Bangladesh
    Lydia B Zablotska
    Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York, USA
    Environ Health Perspect 116:1056-62. 2008
    ..The mitigating effects of diet on arsenic-related premalignant skin lesions are largely unknown...
  28. pmc Prevalence of arsenic exposure from drinking water and awareness of its health risks in a Bangladeshi population: results from a large population-based study
    Faruque Parvez
    Mailman School of Public Health, Columbia University, New York, New York 10032, USA
    Environ Health Perspect 114:355-9. 2006
    ..Increasing knowledge of the health consequences of As may be an important element in facilitating remediation...
  29. ncbi request reprint Arsenic exposure from drinking water, dietary intakes of B vitamins and folate, and risk of high blood pressure in Bangladesh: a population-based, cross-sectional study
    Yu Chen
    Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA
    Am J Epidemiol 165:541-52. 2007
    ..Future research is needed to evaluate the effect of low-level arsenic exposure on specific cardiovascular outcomes...
  30. pmc Reduction in urinary arsenic levels in response to arsenic mitigation efforts in Araihazar, Bangladesh
    Yu Chen
    Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York, USA
    Environ Health Perspect 115:917-23. 2007
    ..There is a need to identify and evaluate an effective mitigation program for arsenic exposure from drinking water in Bangladesh...
  31. pmc Blood glutathione redox status and global methylation of peripheral blood mononuclear cell DNA in Bangladeshi adults
    Megan M Niedzwiecki
    Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
    Epigenetics 8:730-8. 2013
    ..Furthermore, blood SAM does not appear to mediate this association. Future research should explore mechanisms through which cellular redox might influence global DNA methylation. ..
  32. pmc Approaches to increase arsenic awareness in Bangladesh: an evaluation of an arsenic education program
    Christine Marie George
    Mailman School of Public Health, Columbia University, New York, NY, USA
    Health Educ Behav 40:331-8. 2013
    ..This study demonstrates that a household-level arsenic educational program can be used to significantly increase arsenic awareness in Bangladesh...
  33. pmc Manganese exposure from drinking water and children's classroom behavior in Bangladesh
    Khalid Khan
    Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, New York, USA
    Environ Health Perspect 119:1501-6. 2011
    ..Little is known about potential effects at lower exposures, especially in children. Moreover, little is known regarding potential interactions between exposure to Mn and other metals, especially arsenic (As)...
  34. ncbi request reprint Association between arsenic exposure and a measure of subclinical sensory neuropathy in Bangladesh
    Danella M Hafeman
    Mailman School of Public Health, Columbia University, New York, NY 10032, USA
    J Occup Environ Med 47:778-84. 2005
    ..We examined the association between arsenic exposure and peripheral neuropathy in Bangladesh, where the population has been chronically exposed to arsenic in drinking water...
  35. pmc Arsenic exposure from drinking water and mortality from cardiovascular disease in Bangladesh: prospective cohort study
    Yu Chen
    Department of Environmental Medicine, New York University School of Medicine, New York, NY 10016, USA
    BMJ 342:d2431. 2011
    ..To evaluate the association between arsenic exposure and mortality from cardiovascular disease and to assess whether cigarette smoking influences the association...
  36. pmc Mobilization of arsenic during one-year incubations of grey aquifer sands from Araihazar, Bangladesh
    Kathleen A Radloff
    Department of Earth and Environmental Engineering, Columbia University, New York, New York 10025, USA
    Environ Sci Technol 41:3639-45. 2007
    ..Small periodic additions of oxygen suppressed the release of As from sediments at all three depths, which supports the notion that anoxia is a prerequisite for accumulation of As in Bangladesh groundwater...
  37. doi request reprint Hand-pumps as reservoirs for microbial contamination of well water
    Andrew S Ferguson
    Civil Engineering and Engineering Mechanics, Columbia University, 605 Seeley W Mudd, 500 West 120th Street, New York, NY 10027 6902, USA
    J Water Health 9:708-17. 2011
    ..These results demonstrate that hand-pumps can act as persistent reservoirs for microbial indicator bacteria. This could potentially influence drinking water quality and bias testing of water quality...
  38. pmc Association between manganese exposure through drinking water and infant mortality in Bangladesh
    Danella Hafeman
    Mailman School of Public Health, Columbia University, New York, New York 10032, USA
    Environ Health Perspect 115:1107-12. 2007
    ..In this cross-sectional study we assessed the association between water manganese and all-cause infant mortality in the offspring of female participants in the Health Effects of Arsenic Longitudinal Study Cohort...
  39. ncbi request reprint Direct data manipulation for local decision analysis as applied to the problem of arsenic in drinking water from tube wells in Bangladesh
    Andrew Gelman
    Department of Statistics and Department of Political Science, Columbia University, NY, USA
    Risk Anal 24:1597-612. 2004
    ..We use simple nonparametric clustering methods and estimate uncertainties using cross-validation...
  40. pmc A dose-response study of arsenic exposure and markers of oxidative damage in Bangladesh
    Kristin N Harper
    From the Departments of Environmental Health Sciences Dr Harper, Ms Ilievski, Ms Oka, Ms Calancie, Ms Slavkovich, Dr Graziano, and Dr Gamble, Biostatistics Dr Liu and Ms Levy, and Epidemiology Dr Hall, Mailman School of Public Health, Columbia University, New York, NY Columbia University Arsenic Project in Bangladesh Mr Siddique and Mr Alam, Dhaka, Bangladesh Lamont Doherty Earth Observatory Dr Mey and Dr van Geen, Columbia University, Palisades, NY and Kingsbridge Community College Dr Mey, New York, NY
    J Occup Environ Med 56:652-8. 2014
    ..To evaluate the dose-response relationship between arsenic (As) exposure and markers of oxidative damage in Bangladeshi adults...
  41. pmc Impact of tubewell access and tubewell depth on childhood diarrhea in Matlab, Bangladesh
    Jianyong Wu
    Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, NC, USA
    Environ Health 10:109. 2011
    ..This study evaluates the impacts of tubewell access and tubewell depth on childhood diarrhea in rural Bangladesh...
  42. pmc A cross-sectional study of well water arsenic and child IQ in Maine schoolchildren
    Gail A Wasserman
    Department of Psychiatry, College of Physicians and Surgeons, Columbia University New York, NY, USA
    Environ Health 13:23. 2014
    ..g., Perceptual Reasoning, Working Memory) after adjustment for social factors. Because findings are not easily generalizable to the US, we examine this relation in a US population...
  43. ncbi request reprint Removal of methylated arsenic in groundwater with iron filings
    Zhongqi Cheng
    Lamont Doherty Earth Observatory of Columbia University, 61 Route 9W, Palisades, New York 10964, USA
    Environ Sci Technol 39:7662-6. 2005
    ..Indications of partial demethylation in the column of Fe filings suggest conditions might be optimized further to enhance the removal of DMA...
  44. pmc Chronic arsenic exposure and blood glutathione and glutathione disulfide concentrations in Bangladeshi adults
    Megan N Hall
    Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York, USA
    Environ Health Perspect 121:1068-74. 2013
    ....
  45. pmc Comparison of fecal indicators with pathogenic bacteria and rotavirus in groundwater
    Andrew S Ferguson
    Department of Civil Engineering and Engineering Mechanics, Columbia University, NY, USA
    Sci Total Environ 431:314-22. 2012
    ....
  46. pmc Association between arsenic exposure from drinking water and plasma levels of cardiovascular markers
    Fen Wu
    Department of Environmental Medicine, New York University School of Medicine, New York, USA
    Am J Epidemiol 175:1252-61. 2012
    ....
  47. doi request reprint Contrasting influence of geology on E. coli and arsenic in aquifers of Bangladesh
    Jessica Leber
    Department of Earth and Environmental Sciences, Columbia University, New York, NY 10027, USA
    Ground Water 49:111-23. 2011
    ..Hydrogeologic conditions that favor high levels of fecal contamination but low levels of arsenic in shallow groundwater should be taken into account during arsenic mitigation throughout South and Southeast Asia...
  48. pmc Advection of surface-derived organic carbon fuels microbial reduction in Bangladesh groundwater
    Brian J Mailloux
    Environmental Science Department, Barnard College, New York, NY 10027, USA
    Proc Natl Acad Sci U S A 110:5331-5. 2013
    ..Anthropogenic perturbations, however, could affect groundwater redox conditions and As levels in the future...
  49. ncbi request reprint Health Effects of Arsenic Longitudinal Study (HEALS): description of a multidisciplinary epidemiologic investigation
    Habibul Ahsan
    Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY 10032, USA
    J Expo Sci Environ Epidemiol 16:191-205. 2006
    ..HEALS is a valuable resource for examining novel research questions on the health effects of As exposure...
  50. pmc Water arsenic exposure and children's intellectual function in Araihazar, Bangladesh
    Gail A Wasserman
    Department of Psychiatry, College of Physicians and Surgeons, Columbia University, New York, New York, USA
    Environ Health Perspect 112:1329-33. 2004
    ..5 microg/L. The association was generally stronger for well-water As than for urinary As...
  51. pmc Unsealed tubewells lead to increased fecal contamination of drinking water
    Peter S K Knappett
    Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, TN 37996 1410, USA
    J Water Health 10:565-78. 2012
    ..This suggests proper sealing of private tubewell annuli may lead to substantial improvements in microbial drinking water quality...
  52. ncbi request reprint Performance of a household-level arsenic removal system during 4-month deployments in Bangladesh
    Zhongqi Cheng
    Lamont Doherty Earth Observatory of Columbia University, 61 Route 9W, Palisades, New York 10964, USA
    Environ Sci Technol 38:3442-8. 2004
    ..With the exception of Mn, the average concentrations of other inorganic constituents of health concern (Cr, Ni, Cu, Se, Mo, Cd, Sb, Ba, Hg, Pb, and U) in treated water were below their respective WHO guideline for drinking water...
  53. pmc Impact on arsenic exposure of a growing proportion of untested wells in Bangladesh
    Christine Marie George
    Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
    Environ Health 11:7. 2012
    ..In many areas of Bangladesh, it has been more than six years since a national campaign to test tubewells for arsenic (As) was conducted. Many households therefore draw their water for drinking and cooking from untested wells...
  54. pmc Arsenic exposure from drinking water and QT-interval prolongation: results from the Health Effects of Arsenic Longitudinal Study
    Yu Chen
    Department of Population Health, New York University School of Medicine, New York University, New York, New York 10016 USA
    Environ Health Perspect 121:427-32, 432e1-7. 2013
    ..Arsenic exposure from drinking water has been associated with heart disease; however, underlying mechanisms are uncertain...