Seasonal bioconcentration of heavy metals in Onchidium struma (Gastropoda: Pulmonata) from Chongming Island, the Yangtze Estuary, China
Seasonal bioconcentration of heavy metals in Onchidium struma (Gastropoda: Pulmonata) from Chongming Island, the Yangtze Estuary, China
复制标题
中国长江口崇明岛瘤足纲（Gastropoda：Pulmonata）重金属的季节性生物富集
DOI：
10.1016/s1001-0742(08)62260-3
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发表时间：
2009-01-01
影响因子：
6.9
通讯作者：
Cheng Yongxu
中科院分区：
文献类型：
--
作者：
Li Xiaobo;Jia Linzhi;Cheng Yongxu
分别于2007年4月、2006年7月、2006年9月和2006年11月在崇明岛、长江口和长江口研究了海水腹足类Onchidium Turuma 5种组织中Cd、Cr2+、Cu3+、Fe、Mn2+、Pb2+和Z5种重金属的季节性浓度变化。结果表明，所选组织中铜(生物量/水)的生物富集系数约为10(4)个数量级，铁和镉为10(3)，锌为10(2)，锰、铅和铬为10(1)。肝胰腺是铬、铜、锰和锌的主要储存组织，铁和铅主要储存在肌肉和发育腺体中，镉主要储存在卵黄腺和蛋白腺中。此外，夏季和秋季甲状腺吸虫对铜、铁、锰、锌有显著的富集作用，而镉、铬、磷在春季和冬季略有增加。此外，与《渔业水质标准》相比，水中铬的生物浓度高出近2倍，锌的生物浓度高出1.6倍。根据海产品标准，Ph、Cd、Cu值超标，食用甲藻可能存在危害健康的风险。
The seasonal concentration changes of selected heavy metal Cd, Cr, Cu, Fe, Mn, Pb, and Zn in five tissues of marine gastropod Onchidium struma were studied in the Chongming Island, the Yangtze Estuary in April 2007, July 2006, September 2006, and November 2006, respectively. The results demonstrated that the bioconcentration factor of Cu (biomass/water) in all selected tissues was about 10(4) magnitudes, Fe and Cd were 10(3), Zn was 10(2), and Mn, Pb, and Cr were 10(1). Hepatopancreas was proven to be the dominant storage tissue of Cr, Cu, Mn, and Zn, whereas Fe and Ph were mainly stored in muscle and digenetic gland, and Cd was stored in vitelline gland and albumen gland. Additionally, it was found that Cu, Fe, Mn, and Zn were concentrated significantly by O. struma (whole-body) in summer or autumn, and Cd, Cr, and Ph increased slightly in spring and winter. Furthermore, the bioconcentration of Cr was nearly 2-fold higher and Zn was 1.6-fold higher in the water compared with the Water Quality Standard for Fisheries. With view of excessive amount of Ph, Cd, and Cu according to seafood standard, the consumption of O. struma might have the risk of health hazard.