SKALARSan++连续流动分析仪测定水中阴离子表面活性剂

Determination of Anionic Surfactant in Water by Continuous Flowing Analyser of SKALARSan++

目的建立SKALARSan++连续流动分析仪测定水中的阴离子表面活性剂的方法。方法澄清水样直接取样,污水、废水需过滤或者超声前处理,用SKALARSan++连续流动分析仪测定水中阴离子表面活性剂的含量。结果在浓度为(0.050~0.500)mg/L范围内,线性关系良好,相关系数达到0.999 1;最低检出限为4.1μg/L;目标物的加标回收率为95%~110%;精密度RSD小于6%。对水质阴离子表面活性剂标样进行分析,测定结果在标准值参考范围内。结论此方法可用于水中阴离子表面活性剂的含量测定,具有操作简单、分析速度快、试剂消耗少、准确度高、对操作人员危害小等特点,且能满足大批量样品的快速分析,对使用Skalar San++连续流动分析仪测定水体中阴离子表面活性剂所出现的问题加以说明并进行了探讨。

Objective To establish a method for determination of anionic surfactant in water by continuous flowing analyser of SKALARSan + +. Method Clean water sample was directly collected and waste water was pre-treated by filtration or ultrasonic treatment,then anionic surfactant in water was determined by continuous flowing analyser. Results At concentrations of( 0. 050 ~ 0. 500) mg/L,the linear relationship was good and the correlation coefficient for anionic surfactant was 0. 9991; the detection limit of anionic surfactant was 4. 1 mg/L; the additive recovery rates of the samples were 95% ~ 110%; the relative standard deviations were less than 6%. The standard substance of an ionic surfactant in water was analyzed,and the results were in the reference range of the standard value. Conclusions The method was proved to be simple,rapid,accurate and reliable and could applied for the determination of anionic surfactant in water. In addition,the method was less reagent consumption and less harm to the operator and could applied to rapid analysis of large quantities of samples. The article demonstrates some problems that occurred in the determinations also.