通过理论计算和实际试验，研究和分析了河流中重金属元素的地球化学行为及其对两侧浅部含水系统的影响。
The geochemical behaviour of heavy metals in river and its effect on shallow aquiferous system of both sides of the river are studied by theoretic calculation and experiments.
方法：中国药典2000版一部附录重金属及砷盐检查法。
METHODS: The method for detecting the heavy metals and As salt in volume 1 of 2000 China Pharmacopoeia.
方法：参考《中国药典》(2010)i部方法对重金属、砷盐进行杂质限量检查。
Method: according to "Chinese Pharmacopoeia" (ChP) (2010) part I, we exam impurity of heavy metal and arsenic salt.
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