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Endosulfan Plant Uptake Suppression Effect on Char Amendment in Oriental Radish
Authors:Geun-Hyoung Choi  Deuk-Yeong Lee  Dong-Cheol Seo  Leesun Kim  Sung-Jin Lim  Song-Hee Ryu  Byung-Jun Park  Jeong-Han Kim  Jin Hyo Kim
Affiliation:1.Chemical Safety Division,National Institute of Agricultural Sciences, RDA,Iseo-myeon, Wanju-gun,Republic of Korea;2.Institutes of Agriculture and Life Science (IALS),Gyeongsang National University,Jinju,Republic of Korea;3.Department of Agricultural Biotechnology,Seoul National University,Seoul,Republic of Korea
Abstract:
Persistent organic pollutants (POPs) immobilization in farm land is an important issue to solve the residue in crop, and char has been considered for the remediation. In here, three commercially available chars like powdered oak char (POC), granulated oak char (GOC), and rice husk char (RHC) including powdered activated carbon (PAC) were investigated for their potential to adsorb and immobilize endosulfan in the soil. The maximum adsorption capacities (mg g?1) of the applied chars as POC, GOC, and RHC were 714.8, 322.6, and 181.8, respectively, and the capacity of POC was similar with PAC (713.8). In addition, the pore volume (0.138 cm3 g?1) and the surface area (270.3 m2 g?1) of POC were over 3-fold higher than GOC and RHC. The bioconcentration factor (BCF) reducing effect of α-, β-endosulfan, and endosulfan sulfate in oriental radish (Raphanus sativus var. sativus) was investigated by amendment of three commercially available chars to the contaminated soils. The BCF of total endosulfan was 0.025 in the radish root. POC treatments effectively suppressed the endosulfan uptake (BCF 0.002). However, GOC and RHC showed little BCF reducing effect of endosulfan in radish.
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