title: Arsenic accumulation and speciation in rice grown in arsanilic acid-elevated paddy soil.
abstract: P-arsanilic acid (AsA) is a emerging but less concerned contaminant used in animal feeding operations, for it can be degraded to more toxic metabolites after being excreted by animals. Rice is the staple food in many parts of the world, and also more efficient in accumulating arsenic (As) compared to other cereals. However, the uptake and transformation of AsA by rice is unclear. This study aimed to evaluate the potential risk of using AsA as a feed additive and using the AsA contaminated animal manure as a fertilizer. Five rice cultivars were grown in soil containing 100mg AsA/kg soil, after harvest, As species and their concentrations in different tissues were determined. Total As concentration of the hybrid rice cultivar was more than conventional rice cultivars for whole rice plant. For rice organs, the highest As concentration was found in roots. AsA could be absorbed by rice, partly degraded and converted to arsenite, monomethylarsonic acid, dimethylarsinic acid, arsenate. The number of As species and their concentrations in each cultivar were related to their genotypes. The soil containing 100mg AsA/kg or more is unsuitable for growing rice. The use of AsA and the disposal of animal manure requires detailed attention.
authors.affiliation: Public Monitoring Center for Agro-product of Guangdong Academy of Agricultural Sciences, Guangzhou 510640, Guangdong, People's Republic of China; Research Center of Trace Elements of Huazhong Agricultural University, Wuhan 430070, Hubei, People's Republic of China.
authors.forename: Anjing
authors.initials: A
authors.lastname: Geng
authors.affiliation: Public Monitoring Center for Agro-product of Guangdong Academy of Agricultural Sciences, Guangzhou 510640, Guangdong, People's Republic of China.
authors.forename: Xu
authors.initials: X
authors.lastname: Wang
authors.affiliation: Research Center of Trace Elements of Huazhong Agricultural University, Wuhan 430070, Hubei, People's Republic of China. Electronic address: wlshzn@126.com.
authors.forename: Lishu
authors.initials: L
authors.lastname: Wu
authors.affiliation: Public Monitoring Center for Agro-product of Guangdong Academy of Agricultural Sciences, Guangzhou 510640, Guangdong, People's Republic of China.
authors.forename: Fuhua
authors.initials: F
authors.lastname: Wang
authors.affiliation: Key Laboratory of Testing and Evaluation for Agro-Product Safety and Quality, Ministry of Agriculture, Guangzhou 510640, Guangdong, People's Republic of China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Laboratory of Quality & Safety Risk Assessment for Agro-product (Guangzhou), Ministry of Agriculture, Guangzhou 510640, Guangdong, People's Republic of China.
authors.forename: Hui
authors.initials: H
authors.lastname: Yang
authors.affiliation: Key Laboratory of Testing and Evaluation for Agro-Product Safety and Quality, Ministry of Agriculture, Guangzhou 510640, Guangdong, People's Republic of China.
authors.forename: Zhan
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: Laboratory of Quality & Safety Risk Assessment for Agro-product (Guangzhou), Ministry of Agriculture, Guangzhou 510640, Guangdong, People's Republic of China.
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Zhao
mesh_terms: D000821:Animal Feed / Q000032:analysis; D000818:Animals; D001147:Arsanilic Acid / Q000378:metabolism / Q000633:toxicity; D001149:Arsenates / Q000378:metabolism; D001151:Arsenic / Q000032:analysis / Q000378:metabolism*; D001152:Arsenicals / Q000378:metabolism; D018053:Arsenites / Q000378:metabolism / Q000633:toxicity; D002101:Cacodylic Acid / Q000378:metabolism; D005308:Fertilizers / Q000032:analysis; D005506:Food Contamination / Q000032:analysis; D008372:Manure / Q000032:analysis; D012275:Oryza / Q000378:metabolism*; D018517:Plant Roots / Q000378:metabolism; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000633:toxicity
chemical_list: D001149:Arsenates; D001152:Arsenicals; D018053:Arsenites; D005308:Fertilizers; D008372:Manure; D012987:Soil; D012989:Soil Pollutants; D002101:Cacodylic Acid; C020300:monomethylarsonic acid; C015001:arsenite; D001151:Arsenic; C025657:arsenic acid; D001147:Arsanilic Acid
keywords: Accumulation; Arsanilic acid; Arsenic speciation; HPLC-ICP-MS; Metabolism; Rice