The Jiaozhou Bay is a semi-enclosed bay, Qingdao, China. More than 10 rivers enter the bay, of which most take wastes from industrial and household discharges. According to historical seasonal investigations in May, A...The Jiaozhou Bay is a semi-enclosed bay, Qingdao, China. More than 10 rivers enter the bay, of which most take wastes from industrial and household discharges. According to historical seasonal investigations in May, August, November 1979, the content, distribution, and development of heavy metal mercury are analyzed as a historical reference. Water samples were taken from the surface and bottom. The results revealed clear seasonal and regional changes in both horizontal and vertical directions, and close relation with major discharging rivers and plankton production. The seawater was polluted more seriously in spring than in any other seasons. However, it was the cleanest in winter during which least waste was input with low plankton production. According to historical data, the state of mercury pollution in seawater was worsening in the period, and has been improving in recent years. Terrestrial contamination was the main reason for mercury pollution in the bay.展开更多
日本Safety support service（sss）公司是日本三之星（Mitsuboshi）集团旗下的一家研发、设计、制造、销售废荧光灯水银回收装置（March-21，22，23）的公司。“March-21”原来是为研究导致水俣病的水银污染而开发的技术装置，目前SSS...日本Safety support service（sss）公司是日本三之星（Mitsuboshi）集团旗下的一家研发、设计、制造、销售废荧光灯水银回收装置（March-21，22，23）的公司。“March-21”原来是为研究导致水俣病的水银污染而开发的技术装置，目前SSS公司拥有该系列设备的制造销售权。展开更多
Twice a year continuous samples of Rana Chensinensis and sediments have been collected near gold mine in the upstream region of Songhua River from 2000 to 2002, for analyzing the total mercury (THg), methylmercury (Me...Twice a year continuous samples of Rana Chensinensis and sediments have been collected near gold mine in the upstream region of Songhua River from 2000 to 2002, for analyzing the total mercury (THg), methylmercury (MeHg) concentration and correlation in sediments, muscles, livers of the frog. The study indicates that THg and MeHgconcentrations in polluted samples near the gold mine are higher than those in unpolluted ones. THg and MeHg con-centrations are higher in autumn, in female, and in livers than those in spring, in male, in muscles respectively. The order of concentration degree in the frog organizations is as follows: liver>muscle>ovum>Fallopian tube. MeHg is themain form of mercury (Hg) existing in autumn, while inor-ganic Hg is in spring. There is no distinct difference ofCMeHg/CTHg between male and female, livers and muscles. The correlation between MeHg concentrations in the river sedi-ments and in the frog’s livers and muscles are significant, which is related to disorderly discharge of Hg.展开更多
基金the Director's Foundation of the Beihai Monitoring Center,the State Oceanic Administration and Chinese Academy of Science (KZCX 2-207)the Scientific Research Foundation of Wenzhou Medical College (QTJ06013).
文摘The Jiaozhou Bay is a semi-enclosed bay, Qingdao, China. More than 10 rivers enter the bay, of which most take wastes from industrial and household discharges. According to historical seasonal investigations in May, August, November 1979, the content, distribution, and development of heavy metal mercury are analyzed as a historical reference. Water samples were taken from the surface and bottom. The results revealed clear seasonal and regional changes in both horizontal and vertical directions, and close relation with major discharging rivers and plankton production. The seawater was polluted more seriously in spring than in any other seasons. However, it was the cleanest in winter during which least waste was input with low plankton production. According to historical data, the state of mercury pollution in seawater was worsening in the period, and has been improving in recent years. Terrestrial contamination was the main reason for mercury pollution in the bay.
文摘日本Safety support service（sss）公司是日本三之星（Mitsuboshi）集团旗下的一家研发、设计、制造、销售废荧光灯水银回收装置（March-21，22，23）的公司。“March-21”原来是为研究导致水俣病的水银污染而开发的技术装置，目前SSS公司拥有该系列设备的制造销售权。
基金This work was supported in part by the Key Project of the Ninth Five—year Resource and Ecological Environ—ment，CAS(Grant No．KZ952一S1-201) the National Natural Science Foundation of China(Grant No．30370262)．
文摘Twice a year continuous samples of Rana Chensinensis and sediments have been collected near gold mine in the upstream region of Songhua River from 2000 to 2002, for analyzing the total mercury (THg), methylmercury (MeHg) concentration and correlation in sediments, muscles, livers of the frog. The study indicates that THg and MeHgconcentrations in polluted samples near the gold mine are higher than those in unpolluted ones. THg and MeHg con-centrations are higher in autumn, in female, and in livers than those in spring, in male, in muscles respectively. The order of concentration degree in the frog organizations is as follows: liver>muscle>ovum>Fallopian tube. MeHg is themain form of mercury (Hg) existing in autumn, while inor-ganic Hg is in spring. There is no distinct difference ofCMeHg/CTHg between male and female, livers and muscles. The correlation between MeHg concentrations in the river sedi-ments and in the frog’s livers and muscles are significant, which is related to disorderly discharge of Hg.
