It primarily discussed the pre-treatment of extr active solvent(CCl4)and the use of nondispersive infrared instrument OCMA- 350 to determine the petroleum and its derivatives in water or wastewater.%本文初步探讨了使用OCMA-350非分散红外法测定水或 废水中石油类过程中萃取剂CCl4的预处理与OCMA-350测油仪的使用。
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