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为了解大连市儿童头发中微量元素的背景值水平,我们于1986年12月在某小学选取7～12岁儿童各30名,采集枕部距头皮2cm长头发约19,用电感锅合高频等高子发射光谱法侧定25种微量元素,其结果如下:
In order to understand the background value of trace elements in hair of children in Dalian, we selected 30 children aged 7-12 years in a primary school in December 1986, collected about 2cm long hair of the occiput from the scalp about 19, Frequency contour emission spectrometry lateral 25 kinds of trace elements, the results are as follows: