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水中污染物 (contaminants) 有哪些？

水中的污染物質，依其性質可分為 4 類（表１）。純水、超純水系統，依污染物質的性質，可以分別利用吸附、膜分離、相變化或是分解等方式將污染物質加以去除。

表１自來水中的污染物質

項目	內容
無機物	無機鹽類、溶解氣體、重金屬
無機物	硬度成份（鈣、鎂）
有機物	木質素、單寧、腐植酸
	內毒素、RNA分解酶
	農藥、三氯甲烷、環境荷爾蒙物質
	界面活性劑、有機溶劑
微粒子	鐵銹、膠體、懸浮顆粒
微生物	細菌類、藻類、黴菌

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