Ikarashi A, Sasaki K, Toyoda M, Saito Y
Eisei Shikenjo Hokoku. 1996(114):43-7.
We have been surveying toxic substances in food and foodstuffs and carrying out a total diet study on the intakes of various substances since 1979 in cooperation with local public institutes in Japan. In this paper, we report the daily intakes of mercury, PCB and arsenic from foods, and the relation between the concentrations of these substance in fish and the fish body weight. The intakes of mercury and arsenic were 6.9-11.0 micrograms/ man/day and 120-230 micrograms/man/day, respectively. The intakes of these substances remained on a stable level from 1979 to 1994. On the other hand, the intake of PCB decreased from 3.1 micrograms/man/day in 1979 to 0.9 microgram/man/day in 1994. Most of the intakes of mercury, PCB and arsenic were derived from the diet group "fish and shellfish". The level of mercury in fish increased with increasing fish body weight. For PCB and arsenic, there was no correlation between these concentrations in fish and the fish body weight, except that mackerel and croaker show a higher concentration of PCB when they are small. Arsenic shows almost a constant level in each fish regardless of their body weight.
自1979年以来，我们一直在与日本当地公共机构合作，对食品和食品中的有毒物质进行调查，并开展关于各种物质摄入量的总膳食研究。在本文中，我们报告了食物中汞、多氯联苯和砷的每日摄入量，以及这些物质在鱼类中的浓度与鱼体重之间的关系。汞和砷的摄入量分别为6.9 - 11.0微克/人/天和120 - 230微克/人/天。从1979年到1994年，这些物质的摄入量保持在稳定水平。另一方面，多氯联苯的摄入量从1979年的3.1微克/人/天降至1994年的0.9微克/人/天。汞、多氯联苯和砷的摄入量大部分来自“鱼类和贝类”饮食组。鱼类中的汞含量随着鱼体重的增加而增加。对于多氯联苯和砷，除了鲭鱼和鲳鱼在体型较小时多氯联苯浓度较高外，这些物质在鱼类中的浓度与鱼体重之间没有相关性。无论鱼的体重如何，砷在每条鱼中的含量几乎保持恒定。
