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《环境化学》课程PPT教学课件讲稿(英文版)Unit 17 Toxic Metals

Toxic metals Some metals are essential for the normal development and well-being of humans and other creatures They include Na, K, ca, Mg, cu, Cr, and Zn Other metals are toxic even when present in an organism at very low concentrations Examples: Antimony, Arsenic, Barium,
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