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用ＰＸＩＥ方法测定山东省胃癌高发区栖霞县和低发区苍山县高发年龄组（５０～６０岁）的健康人发中的微量元素，结果表明前者人发中的Ａｓ、Ｃｏ、Ｆｅ、Ｃｒ显著高于后者，而Ｓｅ则相反。
The PXIE method was used to determine the trace elements in healthy human hair of the high-age age group (50-60 years old) in Qixia County and Cangshan County, the high incidence areas of gastric cancer in Shandong Province. The results showed that the former had significant As, Co, Fe, and Cr levels in human hair. Higher than the latter, while Se is the opposite.