摘要
利用乙酸乙酯萃取焦化废水中的酚类物质，以消除对SCN-测定的干扰。通过正交实验得m适宜的萃取条件为：萃取pH6．5，有机相与水相体积比1：1．5，萃取时问30min。实际焦化废水的加标回收率为95．4％～103．5％，相对标准偏差为1．54％～3．41％。
In order to remove the interference in determination of SCN , phenolic substances in coking wastewater were extracted using ethyl acetate. The suitable extraction conditions through orthogonal tests are as follows： extraction pH 6.5, volume ratio of organic phase to water phase 1 ： 1.5, extraction time 30 min. The standard addition recovery of real coking wastewater is 95.4%-103.5%. The relative standard deviation is 1.54%-3.41%.
出处
《化工环保》
CAS
CSCD
北大核心
2013年第5期465-468,共4页
Environmental Protection of Chemical Industry
基金
湖北省自然科学基金重点基金资助项目(2011CDA054)
关键词
酚
硫氰酸盐
乙酸乙酯
萃取
分析方法
phenol
thiocyanate
ethyl acetate
extraction
analysis method
