Soil sampleswere analysed to determine total organic C, texture, total Fe and
amorphous Fe oxyhydroxides (FeOx), total arsenic (tAs) and the bioavailable fraction (AsMe). The different plant
parts were analysed separately to determine total (tAs), inorganic (iAs) and organic arsenic (oAs). Low concentrations
of arsenicwere found in samples ofwater (generally b10 μg l−1) and soil (4.48±3 mg kg−1)