Arsenic accumulation in three species of sea turtles
Arsenic accumulation in three species of sea turtles
复制标题
三种海龟体内的砷积累
作者：
K. Saeki;H. Sakakibara;Haruya Sakai;T. Kunito;S. Tanabe
用HG-AAS法测定了3种海龟肝脏、肾脏和肌肉中的砷含量，并用高效液相色谱-电感耦合等离子体质谱分析了它们的形态分布。各组织中砷含量的大小顺序为肌肉>肾脏>肝脏。出乎意料的是，主要以海绵为食的鹰嘴龟的砷浓度高于以藻类和软体动物为主的另外两只海龟，后者积累了大量的砷。特别是，与其他生物的数据相比，鹰嘴龟肌肉中的砷含量非常高，平均为153m g/kg−1干重，范围为23.1-205m g/kg−1(n=4)。以标准甲壳长度作为生长指标，绿海龟组织中的砷浓度显著降低。在砷化合物中，砷甜菜碱主要存在于所有海龟的组织中。除毒物甜菜碱外，在鹰嘴龟体内也观察到少量的二甲基乙酰丙酸。
Arsenic in the liver, kidney and muscle of three species of sea turtles, e.g., green turtles (Chelonia mydas), loggerhead turtles (Caretta caretta) and hawksbill turtles (Eretmochelys imbricata), were determined using HG-AAS, followed by arsenic speciation analysis using HPLC-ICP-MS. The order of arsenic concentration in tissues was muscle > kidney > liver. Unexpectedly, the arsenic concentrations in the hawksbill turtles feeding mainly on sponges were higher than the two other turtles primarily eating algae and mollusk which accumulate a large amount of arsenic. Especially, the muscles of the hawksbill turtles contained remarkably high arsenic concentrations averaging 153 mg kg−1 dry weight with the range of 23.1–205 mg kg−1 (n=4), even in comparison with the data from other organisms. The arsenic concentrations in the tissues of the green turtles were significantly decreased with standard carapace length as an indicator of growth. In arsenic compounds, arsenobetaine was mostly detected in the tissues of all the turtles. Besides arsenobetaine, a small amount of dimethylarsinic acid was also observed in the hawksbill turtles.
大鼠对亚砷酸盐和砷酸盐的代谢。
DOI：
10.1016/s0272-0590(83)80145-6
发表时间：
1983
期刊：
Fundamental and applied toxicology : official journal of the Society of Toxicology
影响因子：
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作者：
Lerman,S;Clarkson,TW
通讯作者：
Clarkson,TW