电镀铬废水中氟离子的测定_杨晓燕

•31•电镀铬废水中氟离子的测定电镀铬废水中氟离子的测定杨晓燕*，李莉，王碧璇，肖菊花，朱琦（南昌航空大学环境与化学工程学院，江西南昌330063）摘要：摘要：利用氟离子选择性电极标准曲线法测定电镀铬废水中氟离子含量，得标准曲线方程为y=59.6x−2.2，相关系数接近于1，方法误差为2.0%~5.4%。该法简便、快捷、准确，其测定结果与氟试剂分光光度法的测定结果一致。关键词：关键词：电镀铬；废水；氟离子；测定；标准曲线法；离子选择性电极中图分类号：中图分类号：TQ153.11文献标志码：文献标志码：A文章编号：文章编号：1004–227X(2009)02–0031–02Determinationoffluorideionsinchromiumelectro-platingwastewater//YANGXiao-yan*,LILi,WANGBi-xuan,XIAOJu-hua,ZHUQiAbstract:AmethodforthedeterminationofF−inchromium-electroplatingwastewaterwasestablishedbasedonfluorideionselectiveelectrodebystandardcurve.Thestandardcurveregressionequationisy=59.6x−2.2,anditsrelativityofthelinearregressionequationapproaches1.000.Theabsoluteerrorofthetestingrangesfrom2.0%to5.4%.Themethodissimple,rapidandaccurate.Thedeterminationresultofthemethodaccordswiththatobtainedbyspectro-photometrywithalizarincomplexoneaschromogenicreagent.Keywords:chromium-electroplating;wastewater;fluorideion;determination;standardcurvemethod;ionselectiveelectrodeFirst-author’saddress:SchoolofEnviro