Mercury in Kagoshima Bay from volcanisms of Mt.Sakurajima - A different health effect between eruptive and man-made mercury -

测量了樱岛和水俣福郎湾海岸的海水、沉积物和贝类样本中的汞含量，以确定其环境中的汞含量。对鹿儿岛湾26个站点的海水样品汞含量进行了季节和地区变化分析。此外，樱岛、柳州和高原县居民的血清二十碳五烯酸（EPA）和头发汞含量均高于其他地区。被测量。此外，还研究了几种定量分析海水中总汞和甲基汞的方法，以证明汞含量的可重复性并简化其程序。鹿儿岛湾26个监测站的海水汞含量为0.1 ~ 3.2 ng/L，低于以往报告的汞含量。汞含量与海水温度、pH值均呈显著相关，且冬季汞含量高于夏季。26个监测点被划分为海湾入口、中部和内部4个区域，其中樱岛附近水域的汞含量仅在冬季高于海湾入口和内部。水俣-福郎湾低潮和涨潮时海水表层和深层汞含量分别为1.2 ~ 5.0和1.2 ~ 1.7 ng/L, 1.8 ~ 5.4和1.6 ~ 4.2ng/L。水俣-福郎湾蓝贻贝的汞含量为23 ~ 67ng/g，显著高于樱岛贻贝的4 ~ 14ng /g。头发汞（11.4 μ g/g）和血清EPA （90mg/L）含量均以樱岛居民最高。Akagi和Nishimura（1991）报道的对海水中总汞和甲基汞进行定量分析的有效方法在一定程度上简化了汞化合物的提取和浓缩过程。

Mercury contents of samples of sea water, and sediments and shellfish at seashores from Sakurajima Island and Minamata-Fukuro Bay were measured to find mercury levels in their environments. Mercury contents of sea water samples at 26 stations in Kagoshima Bay were also analyzed for their seasonal and local variations. Moreover, contents of either serum eicosapentaenic acid (EPA) or hair mercury of the habitants of Sakurajima, Iou and Takara Is. were measured. Furthermore, several methods of the quantitative analyzes of both total and methylmercury in sea water were examined for certifying the reproducibility of mercury contents and simplifing their procedures. Mercury contents of sea water at 26 stations from Kagoshima Bay were 0.1-3.2 ng/L, and lower than the values reported before. There was a significant correlation between mercury contents and the values of either temperature or pH of sea water and mercury contents of those in winter were higher than those in summer. Twenty six stations were classified into four areas, the entrance, the middle and the interior of the Bay, and the water around the Sakurajima area mercury contents of the samples from the last area and the interior were higher than either at the entrance or in the interior of the Bay only in winter. At Minamata-Fukuro Bay, mercury contents of sea water from the surface and depths in low and high tides were 1.2-5.0 and 1.2-1.7, and 1.8-5.4 and 1.6-4.2ng/L, respectivery. Mercury contents of a blue mussel, from Minamata-Fukuro Bay were 23-67ng/g, were significantly higher than those from Sakurajima, were 4-14 ng/g. The highest contents of either hair mercury (11.4 mu g/g) or serum EPA (90mg/L) were found in habitants of Sakurajima.The effective methods of the quantitative analyzes of total and methylmercury from sea water, reported by Akagi and Nishimura (1991) were changed for the easier partly in the procedures of extraction and concentration of mercury compounds.