紫外分光光度法测定焦化厂废水中苯系物的探究  

Determination of benzene toluene ethylbenzene&xylene in coking wastewater by ultraviolet spectrophotometry

作　　者：张昌邦 翟伟 李巧琳 李秀花 曹智慧 Zhang Changbang;Zhai Wei;Li Qiaolin;Li Xiuhua;Cao Zhihui(Qinghai Salt Lake Magnesium Industry Co.,Ltd.,Golmud Qinghai 816099,China)

机构地区：[1]青海盐湖镁业有限公司,青海格尔木816099

出　　处：《煤化工》2024年第5期92-94,共3页Coal Chemical Industry

摘　　要：针对采用气相色谱法测定焦化厂废水中苯系物含量时分析成本高、对分析人员要求高等问题,青海盐湖镁业有限公司采用紫外分光光度法进行替代研究。结果表明:采用紫外分光光度法测定苯标准工作液时的最大相对误差为4.0%;相对于气相色谱法对未知水样的测定结果,紫外分光光度法测定结果的最大相对误差为11.11%;紫外分光光度法测定焦化厂废水时的加标回收率在95%~105%,对同一样品重复测定5次时的相对标准偏差为0.85%。In response to the high analysis cost and high requirement for analysis personnel when using gas chromatography to determine the content of benzene toluene ethylbenzene&xylene in coking plant wastewater,as an alternative,ultraviolet spectrophotometry was adopted in Qinghai Salt Lake Magnesium Industry Co.,Ltd.The results showed that the maximum relative error of using ultraviolet spectrophotometry to determine the benzene standard solution was 4.0%,and the maximum relative error of unknown water sample measured by ultraviolet spectrophotometry compared to gas chromatography was 11.11%.When using ultraviolet spectrophotometry to measure coking wastewater,the recovery rate in spiked sample was at 95%-105%.The relative standard deviation of the same sample measured by ultraviolet spectrophotometry for five times was 0.85%.

关 键 词：焦化废水 苯系物 紫外分光光度法 气相色谱法 相对误差 

分 类 号：X832[环境科学与工程—环境工程]