Assessment Of The Geochemical Conditions For The Release Of Arsenic,
Iron And Copper Into Groundwater In The Coastal Aquifer At Yumigahama,
Western Japan
Author(s)
I. S. I. Torres & H. Ishiga
Abstract
Assessment of the geochemical conditions for
the release of arsenic, iron and copper into
groundwater in the coastal aquifer at
Yumigahama, western Japan
I. S. I. Torres & H. Ishiga
Department of Geosciences, Shimane University, Japan.
Abstract
Arsenic contamination in groundwater is a hazard worldwide, and Japan is no
exception. Arsenic has been detected in perched groundwater in the Holocene
Yumigahama sandbar, where such water should be As-free due to prevailing
oxidizing conditions. Groundwater drawn from shallow hand-pump wells is used
for agriculture in the area. This study aims to evaluate the geochemical
conditions of the Yumigahama aquifer by examining mobilization of As, Fe and
Cu in soil under extreme pH conditions, and also the influence of fermentation.
Soil samples were eluted with 1M HCl and 0.5M NaOH, and fermented with
0.28M glucose. Groundwater and treated samples were analysed for As, Fe and
Cu by atomic absorption spectrophotometry. Bulk soils were analysed by X-ray
fluore
Keywords
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