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对７６３个人发样品汞及硒含量的分析发现，我国人群发汞含量与世界水平相比偏低，而且从东北－华北－西南－带发汞值最低，以此为轴向西北和东南递增，在全国范围内发汞和发硒之间存在显著正相关，非病区也相同。但在病区这种关系破坏。还发现人发中硒汞克原子比也存在着北高南低的地区差异，而且西南病带低于非病区，与其他地方相反，在部分病区，如西南还可能与硒结合共同对克山病的发生产生影响。
The analysis of mercury and selenium content in 763 samples of human hair found that the mercury content of our population is relatively low compared with the world level, and the mercury value from northeast, north China and southwestern China is the lowest, which increases axially northwest and southeast, There was a significant positive correlation between hair mercury and selenium throughout the country, and the same for non-wards. But this relationship in the ward is damaged. Also found in human hair grams of atomic grams of mercury and there is also a north-south high and low regional differences, and the lower the non-endemic areas of Southwest sickness compared with other places, in some wards, such as Southwest may also be combined with selenium Keshan disease have an impact.