The influence of geology and land use on arsenic in stream sediments and ground waters in New England,USA |
| |
| Institution: | 1. KTH-International Groundwater Arsenic Research Group, Department of Sustainable Development, Environmental Science and Engineering, KTH Royal Institute of Technology, Teknikringen 76, SE-100 44 Stockholm, Sweden;2. NGO-Forum for Public Health, 4-6/Block-E, Lalmatia, Dhaka 1207, Bangladesh;3. Department of Earth and Environmental Sciences, University of Waterloo, Waterloo, ON N2L 3G1, Canada;4. Department of Geology, University of Dhaka, Dhaka 1000, Bangladesh;5. Soil and Water Environment, Ramböll Sweden AB, SE-104 62 Stockholm, Sweden;1. School of Environmental Studies, China University of Geosciences, 430074 Wuhan, China;2. State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, 430074 Wuhan, China;3. School of Environmental Science and Engineering, Southern University of Science and Technology, 518055 Shenzhen, Guangdong, China;4. Geological Survey, China University of Geosciences, 430074 Wuhan, China;1. Columbia University, Lamont-Doherty Earth Observatory, 61 Route 9 W, Palisades, NY 10964, United States;2. School of Public Health, City University of New York, 365 5th Ave, New York, NY 10016, United States;3. Maine Geological Survey, 93 State House Station, Augusta, ME 04333, United States;4. School of Earth and Environmental Sciences, Queens College, City University of New York, 65-30 Kissena Blvd., Flushing, NY 11367, United States |
| |
| Abstract: | Population statistics for As concentrations in rocks, sediments and ground water differ by geology and land use features in the New England region, USA. Significant sources of As in the surficial environment include both natural weathering of rocks and anthropogenic sources such as arsenical pesticides that were commonly applied to apple, blueberry and potato crops during the first half of the 20th century in the region. The variation of As in bedrock ground water wells has a strong positive correlation with geologic features at the geologic province, lithology group, and bedrock map unit levels. The variation of As in bedrock ground water wells also has a positive correlation with elevated stream sediment and rock As chemistry. Elevated As concentrations in bedrock wells do not correlate with past agricultural areas that used arsenical pesticides on crops. Stream sediments, which integrate both natural and anthropogenic sources, have a strong positive correlation of As concentrations with rock chemistry, geologic provinces and ground water chemistry, and a weaker positive correlation with past agricultural land use. Although correlation is not sufficient to demonstrate cause-and-effect, the statistics favor rock-based As as the dominant regional source of the element in stream sediments and ground water in New England. The distribution of bedrock geology features at the geologic province, lithology group and map unit level closely correlate with areas of elevated As in ground water, stream sediments, and rocks. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
