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采用测定化学需氧量(COD)法和有机溶剂抽提法分别对企业常用的两种锌矿原料(A,B)有机物进行监测。通过采用测定化学需氧量(COD)法对锌矿原料中含有的有机物进行定性及半定量分析,实验结果表明,矿粉A中COD为84.9mg/L,矿粉B中COD为96.9mg/L,各自进行了3次平行实验,都能得到稳定的结果,同时确定矿粉A和B中分别含有不同量的有机物。采用有机溶剂抽提法来确定锌矿原料中有机物的含量。考察了溶剂种类、溶剂量、抽提时间对矿粉中的有机物提取效果的影响,得到最佳实验条件,对矿粉的测定结果为:矿粉A中有机物含量为7.6‰,矿粉B中有机物含量为10.1‰。在各自的最佳实验条件下,进行了3次平行实验,都能得到稳定的结果,方法准确、可靠。
The two kinds of raw materials (A, B) of organic zinc, which are commonly used in enterprises, were monitored by COD and organic solvent extraction respectively. Through the qualitative and semi-quantitative analysis of the organic compounds contained in the zinc ore by the method of determination of chemical oxygen demand (COD), the experimental results show that the COD in the ore powder A is 84.9mg / L, the COD in the slag B is 96.9mg / L, each conducted three parallel experiments, can get a stable result, at the same time determine the mineral powder A and B, respectively, containing different amounts of organic matter. Organic solvent extraction method to determine the content of organic matter in the zinc ore raw materials. The effects of solvent type, solvent amount and extraction time on the extraction of organic compounds in the ore powder were investigated. The optimum experimental conditions were obtained. The determination results of the mineral powder were as follows: the organic content in the mineral powder A was 7.6 ‰, Organic content of 10.1 ‰. In their best experimental conditions, conducted three parallel experiments, can get a stable result, the method is accurate and reliable.