Chemical speciation of arsenic in the livers of higher trophic marine animals
Chemical speciation of arsenic in the livers of higher trophic marine animals
复制标题
DOI：
10.1016/s0025-326x(02)00055-3
复制
发表时间：
2002-01-01
影响因子：
5.8
通讯作者：
Tanabe, S
中科院分区：
文献类型：
--
作者：
Kubota, R;Kunito, T;Tanabe, S
总砷和个别砷化合物的浓度进行了测定，在鲸目动物的肝脏（达尔的海豚和短鳍领航鲸），鳍足类（竖琴和环海豹），海牛（儒艮），海龟（绿色和红海龟），以表征砷的积累配置文件中的高营养海洋动物。海龟肝脏中的砷浓度最高的物种检查。砷的化学形态分析表明，砷甜菜碱是几乎所有物种中砷的主要化合物。相反，砷甜菜碱是儒艮中的次要成分。二甲基胂酸，甲基胂酸，砷胆碱，四甲基砷离子，亚砷酸盐，和一个身份不明的砷化合物也被检测到的次要成分。然而，砷化合物的组成是不同的这些物种。这些结果可能反映了砷的代谢和/或砷化合物的组成在其猎物的差异。据我们所知，这是第一次报告的大的变化，在海洋哺乳动物和海龟的肝脏中的砷物种的组成。(C)2002爱思唯尔科技有限公司版权所有。
Concentrations of total arsenic and individual arsenic compounds were determined in livers of cetaceans (Dall's porpoise and short-finned pilot whale), pinnipeds (harp and ringed seals), sirenian (dugong), and sea turtles (green and loggerhead turtles) to characterize arsenic accumulation profiles in higher trophic marine animals. Hepatic arsenic concentrations in sea turtles were highest among the species examined. Chemical speciation of arsenic revealed that arsenobetaine was the major arsenic compound in almost all the species. In contrast, arsenobetaine was a minor constituent in dugong. Dimethylarsinic acid, methylarsonic acid, arsenocholine, tetramethylarsonium ion, arsenite, and an unidentified arsenic compound were also detected as minor constituents. However, the composition of arsenic compounds was different among these species. These results might reflect the differences in the metabolism of arsenic and/or the compositions of arsenic compounds in their preys. To our knowledge, this is the first report on the large variation in the composition of arsenic species in liver of marine mammals and sea turtles. (C) 2002 Elsevier Science Ltd. All rights reserved.