Determination of Suitable Extractant for Estimating Plant Available Arsenic in Relation to Soil Properties and Predictability by Solubility-FIAM

Abstract Extractant for estimating plant available arsenic (As) in soil has not been universally established. Moreover, to assess and monitor the complex chemical behaviour of subsequently its transfer crops, a suitable extraction protocol considering properties relation crop uptake is required. For this purpose, pot experiment was conducted evaluate suitability extractants determination extractable As risk assessment by solubility-free ion activity model (FIAM) with rice (variety: Sushk Samrat) as test crop. Soil bulk collected from six locations Indo-Gangetic Plain Bihar, India, varying physicochemical conduct using five doses (0, 10, 20, 40 80 mg kg −1 ). Six namely 0.2 (M) NH 4 -oxalate, 0.05 (N) HCl + 0.025 H 2 SO , 0.5 KH PO F, NaHCO 3 EDTA were used. The results revealed that gave best correlation can be considered extractant As. Regardless dose type used, tissue, concentration followed order root > straw leaf grain. high 94% variation content grain could explained, when being used input solubility-FIAM. Extractable cannot determined atomic absorption spectrophotometer (AAS) coupled vapour generation accessory (VGA) an extractant.