Evaluation of a field kit for testing arsenic in paddy soil contaminated by irrigation water.

ABSTRACT: Rice is the primary crop in Bangladesh and rice yield is diminished due to the buildup of arsenic (As) in soil from irrigation with high-As groundwater. Soil testing with an inexpensive kit could help farmers target high-As soil for mitigation or decide to switch to a different crop that is less sensitive to As in soil. A total of 3,240 field kit measurements of As in 0.5 g of fresh soil added to 50 mL of water were compared with total soil As concentrations measured on oven-dried homogenized soil by X-ray fluorescence (XRF). For sets of 12 soil samples collected within a series of rice fields, the average of kit As measurements was a linear function of the average of XRF measurements (r²=0.69). Taking into account that the kit overestimates water As concentrations by about a fa

SUBMITTER: Huhmann LB 

PROVIDER: S-EPMC7643838 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature