Cappon C J, Smith J C
J Anal Toxicol. 1982 Jan-Feb;6(1):10-21. doi: 10.1093/jat/6.1.10.
The content, chemical form, and distribution of mercury and selenium in edible tissue were determined for several samples of fish and other marine animal organisms (mollusks, crustaceans and pods). For most fish samples, except Pacific blue marlin, 53 to 94% of the total mercury content was present as methylmercury, being notably higher in freshwater species. Other marine organisms, except shrimp, contained only 29 to 47% methylmercury. For all samples, a significant part of the total selenium content (4 to 47%) was present as selenate (Se VI). Tissue selenium levels did not correlate with corresponding mercury levels. In freshwater and older processed (canned) marine fish, except marlin, 55 to 80% of the total mercury content was water-extractable. For non-processed (fresh) and newly-processed marine samples, only 22 to 47% was extractable. On a percentage basis, inorganic mercury was generally more extractable than methylmercury. For all fish samples, except marlin, 55 to 60% of the total selenium content was water-extractable, while only 35 to 45% was extractable for other marine species. On a percentage basis, Se VI was more extractable than selenite (Se IV) and selenide (Se II).
测定了几种鱼类和其他海洋动物生物体（软体动物、甲壳类动物和豆荚类）可食用组织中汞和硒的含量、化学形态及分布。对于大多数鱼类样本，除了太平洋蓝枪鱼，总汞含量的53%至94%以甲基汞形式存在，淡水物种中的甲基汞含量明显更高。其他海洋生物，除了虾，仅含有29%至47%的甲基汞。对于所有样本，总硒含量的很大一部分（4%至47%）以硒酸盐（Se VI）形式存在。组织中的硒水平与相应的汞水平不相关。在淡水鱼和加工时间较长（罐装）的海鱼中，除了枪鱼，总汞含量的55%至80%可被水提取。对于未加工（新鲜）和新加工的海洋样本，只有22%至47%可被提取。按百分比计算，无机汞通常比甲基汞更易被提取。对于所有鱼类样本，除了枪鱼，总硒含量的55%至60%可被水提取，而其他海洋物种只有35%至45%可被提取。按百分比计算，Se VI比亚硒酸盐（Se IV）和硒化物（Se II）更易被提取。
