This book covered a broad spectrum study of arsenic contamination
in drinking and irrigated water and its impact on food crops and
local community lived in arsenic affected areas of Pakistan.
Speciation of arsenic in water samples was carried out by advance
preconcentration methods for trace analysis. It is a first attempt
to elucidate the chemical fractionation of geochemical bonded
fractions of arsenic in soil and sediment. Moreover, the
translocation of arsenic from growing media (irrigation water and
soil)to local agricultural crops (grain crops and vegetables)was
addressed well. The impact of arsenic of human was also studied
using scalp hair samples as biomarker and detail study of risk
assessment was performed. At the end the removal of arsenic from
water was done by using biomass taken from a local plant (Acacia
nilotica). The effects of various parameters vis, pH, biosorbent
dosage, temperature and exposure time for bio-sorption of As were
investigated in detail. The complete characterization, chemical
equilibrium, kinetic and thermodynamic study was carried out. The
removal of arsenic by biomass of A. nilotica was > 95%.
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