Yutani Aiko, Nakatani Tadashi, Ozaki Asako, Yamaguchi Yukihiko, Yamano Tetsuo
Osaka Institute of Public Health.
Shokuhin Eiseigaku Zasshi. 2022;63(2):85-91. doi: 10.3358/shokueishi.63.85.
The total mercury content in 112 fishery products, purchased from Osaka city during 2013-2018, was measured using a heating vaporization mercury analyzer. The average total mercury content in all tuna processed products was found out to be 0.115 μg/g (median=0.070 μg/g). Notably, albacore tuna exhibited the highest mercury content with an average concentration of 0.301 μg/g (median=0.296 μg/g). The total mercury concentration of the fishery products, except processed tuna and Kezuribushi (comprising shavings of dried and smoked mackerel, sardine, as well as horse mackerel), was generally low (<0.1 μg/g).The provisional tolerable weekly intake (PTWI) for mercury as set by the Joint FAO/WHO Expert Committee on Food Additives is 4.0 μg/kg body weight/week. On an average, for Japanese diet, the total weekly mercury intake from fishery products for a person weighing 50 kg was estimated to be 0.13 μg/kg body weight/week, which was 3.3% of the PTWI. These values indicate that it was not a problem to consume fishery products normally. However, albacore tuna cans have a relatively high total mercury concentration; thus, pregnant women consuming them daily may exceed the tolerable weekly intake of methylmercury (2 μg/kg body weight/week) as set by the Food Safety Commission of Japan.
使用加热汽化汞分析仪测量了2013年至2018年期间从大阪市购买的112种渔业产品中的总汞含量。结果发现，所有金枪鱼加工产品中的平均总汞含量为0.115μg/g（中位数=0.070μg/g）。值得注意的是，长鳍金枪鱼的汞含量最高，平均浓度为0.301μg/g（中位数=0.296μg/g）。除加工金枪鱼和木鱼花（由干制和烟熏鲭鱼、沙丁鱼以及竹荚鱼的刨片组成）外，渔业产品的总汞浓度普遍较低（<0.1μg/g）。联合国粮食及农业组织/世界卫生组织食品添加剂联合专家委员会设定的汞暂定每周耐受摄入量（PTWI）为4.0μg/kg体重/周。平均而言，对于日本饮食，体重50kg的人每周从渔业产品中摄入的总汞量估计为0.13μg/kg体重/周，占PTWI的3.3%。这些数值表明正常食用渔业产品没有问题。然而，长鳍金枪鱼罐头的总汞浓度相对较高；因此，每天食用它们的孕妇可能会超过日本食品安全委员会设定的甲基汞每周耐受摄入量（2μg/kg体重/周）。
