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Received: October 15, 2017 Revised: November 1, 2017 Accepted: November 6, 2017 This study aimed to investigate correlations between concentrations of extractable Arsenic (As) with varying chemical solutions (0.1 M Ca(NO3)2, 0.1 M (NH4)2HPO4, 0.5 M EDTA, Mehlich 3, and 0.5 M NaHCO3) and those of As in crops, and then to seek the most suitable soil extraction method for predicting the potential of As uptake in crops cultivated in soils contaminated with As. For a mesocosm experiment, pepper (Capsicum annuum L.), soybean (Glycine max L.), and rice (Oryza sativa L.) were cultivated for three months in pots containing soils taken from the arable areas near abandoned mines in Korea. Following the cultivation, soil pH and DOC significantly increased by treatments of lime and lime plus compost, respectively, while insignificant influences in changing total and all extractable As concentrations were found in all soils. Arsenic concentration in edible part of all crops considerably depended on the extractable As concentration in the soils, particularly with Mehlich 3. All extractable As concentrations in the soils of C. annuum and G. max were significantly correlated with As concentration in their edible parts. For O. sativa, the extractable concentrations of Mehlich 3 (R2: 0.18 at p: 0.006) and EDTA (R2: 0.11 at p: 0.036) showed only marked relationships with As concentration in the edible part. These results may indicate that the Mehlich 3 and EDTA are soil extractants to determine phytoavailable As in soil that provide better prediction for As transfer from soil to crop.

han-guk toyang biryo hakoeji/han'guk toyang biryo hakhoe chi

Identification of a Proper Phytoavailable Arsenic Extraction Method Associated with Arsenic Concentration in Edible Part of three Crops in Soils Near Abandoned Mining Areas