Intervention trial to assess arsenic exposure from food crops in Bangladesh
| Autor: | Wayne Smith, Jack C. Ng, Geethanjali Piyawadani Ranmuthugala, Malcolm R Sim, Abul Hasnat Milton, Keith Dear, Bruce Caldwell |
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| Rok vydání: | 2005 |
| Předmět: |
inorganic chemicals
Adult Male chemistry.chemical_element Food Contamination Urine Irrigation water Arsenic Toxicology Crop Environmental protection Water Supply Arsenic Poisoning Environmental Chemistry Humans Intervention trial ARSENIC EXPOSURE General Environmental Science Bangladesh integumentary system Public Health Environmental and Occupational Health Commerce Agriculture Arsenic contamination of groundwater chemistry Female Plants Edible Food contaminant |
| Zdroj: | Archives of environmental health. 59(4) |
| ISSN: | 0003-9896 |
| Popis: | The authors assessed the contribution of food irrigated with arsenic-contaminated water to human exposure to arsenic in Bangladesh. An intervention trial was conducted in a village in the Jessore District of Bangladesh, where irrigation water had been field-tested in March 2000 and was found to contain arsenic with concentrations ranging from 100 to 500 microg/l. In May 2000, a random sample of 63 households was selected from the village, and 1 eligible person from each household was recruited to the study and randomized to an intervention or control group. The intervention group received food purchased from a village where irrigation water was found to contain10 microg/l arsenic. The control group received food purchased from markets in the study village, where irrigation water was found to contain100 microg/l arsenic. Pre- and postintervention urine samples were collected for urinary arsenic speciation assays. Preintervention, the mean urinary total arsenic concentrations were 139.25 microg/l and 129.15 microg/l for the intervention and control groups, respectively. These concentrations did not change significantly following intervention. Arsenic concentrations in samples of selected raw and cooked foods from the low-contamination area did not contain less arsenic than samples from the high-contamination area. Further studies to investigate the arsenic content of food grown in areas with high and low arsenic contamination of irrigation water are recommended. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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