求翻译：锌、铜、镉、镍是自然界常见的重金属。锌，铜也是人体所必需的微量元素，而镉、镍属于剧毒重金属。高浓度重金属对于人体有害无益。本文采用火焰原子吸收分光光度法对黑龙江省扎龙自然保护区外围的吐木柯附近的芦苇、水、土壤进行重金属含量的测量。研究芦苇对重金属的富集效果。实验结果表明，芦苇中重金属含量是水中重金属含量的数十倍以至数百倍，相对土壤中重金属的富集系数也在20%-60%左右。由此可见芦苇的重金属有一定的富集效果，芦苇可以经过春生秋割去除水、土壤中金属元素的污染。在此基础上探究芦苇对重金属污染的治理效果，从而开辟治理重金属污染新途径是什么意思？

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zinc, copper, cadmium, nickel, natural common heavy metals. zinc, copper and the body of the essential trace elements, and the cadmium, nickel is a highly toxic heavy metal. Heavy metal concentrations in the human body more harm than good. This article by flame atomic absorption spectrophotometer, M

Zinc, copper, cadmium, nickel and nature of common heavy metals. Zinc, copper trace elements is also necessary for the human body, and cadmium, nickel is toxic heavy metals. Hig