农业环境科学学报2012，Vol.31Issue(12)：2321-2327,7.
全氟辛烷磺酸和全氟辛烷羧酸在天津大黄堡湿地地区鱼体和蔬菜中的分布研究
Distribution of Perfluorooctane Sulfonate and Perfluorooctanoic Acid in Different Tissues of Fishes and Vegetables from Dahuangpu Wetland Nature Reserve, Tianjin City, China
摘要
Abstract
The concentrations of perfluorooctane sulfonate (PFOS ) and perfluorooctanoic acid(PFOA) were measured in water of a pond, organs of freshwater fish(i.e., carp and catfish), tissues of vegetables(i.e., Chinese cabbage and carrot) and their corresponding rhizospheric soil, collected in Dahuangpu Wetland Nature Reserve. Biotransfer factors(BTFs) and bioaccumulation factors(BAFs) of PFOA and PFOS in target vegetables and fishes were calculated, and the trend of distribution for PFOS and PFOA between terrestrial plants and aquatic organisms were also compared by this study. The mean concentrations of PFOA and PFOS in water samples(n=3) collected in pond were 22.0±1.3 ng·L-1 and 8.4±0.6 ng·L-1, respectively. In general, PFOA levels in fish were lower than PFOS, which indicated PFOA had lower bioaccumulation tendency. The highest concentrations of PFOS were detected in fish liverjcarp: 17.8 ng·kg-1(WT); catfish:21.7 ng·kg-1(WT)], followed by kidney, meat and cheek. Among all tissues of Chinese cabbage, root had the highest concentration of PFOA and PFOS with a value of 0.84 μg·kg-1 and 0.42 μg·kg-1(WT), respectively. The BAFs of PFOS and PFOA in fish ranged from 1.7 to 2583, these values were much higher than the BTFs in vegetables(0.01 to 0.59). Furthermore, the BTFs of PFOA in vegetables was greater than PFOS, while the BAFs'of PFOA in fish was lower than PFOS. Human exposure through the consumption of target freshwater fishes and vegetables was estimated by this study. The daily intake by general adults via carp and catfish were 104 and 39 ng·day-1 for PFOS, and 2.6 ng·kg-1 and 1.7 ng·d-1 for PFOA, respectively. The contribution for PFOA from the Chinese cabbage and carrot was greater than the two kinds common fish, the values were 18.4 ng·day-1 and 4.1 ng·day-1, respectively. Comparing with the Tolerance Daily Intake(TDI) for PFOA and PFOS from European Food Safety Agency, our results showed that human exposure risk via consumption of carp, catfish, Chinese cabbage and carrot were low.关键词
全氟化合物/组织分配/生物转移系数/生物富集系数Key words
perfluorinated chemicals/ tissue distribution/ biotransfer factor/ bioaccumulation factor分类
资源环境引用本文复制引用
赵立杰,周萌,任新豪,张艳伟,干志伟,孙红文..全氟辛烷磺酸和全氟辛烷羧酸在天津大黄堡湿地地区鱼体和蔬菜中的分布研究[J].农业环境科学学报,2012,31(12):2321-2327,7.基金项目
国家自然科学基金(41073087) （41073087）
国家基金委外国青年学者研究项目(21150110458) （21150110458）
