退浆废水中聚乙烯醇(PVA)含量的测定  

Determination of PVA Content in Desizing Wastewater

作　　者：顾润南[1] 林苗[1] 

机构地区：[1]东华大学化学与化工学院,上海200051

出　　处：《东华大学学报（自然科学版）》2005年第2期106-109,共4页Journal of Donghua University(Natural Science)

摘　　要：退浆废水中的聚乙烯醇(PVA)很难降解,直接排放会对环境造成污染,因而必须对废水进行处理,使其中的PVA含量明显降低,达到排放标准,为此有必要建立PVA浓度的测定方法。利用PVA在硼酸介质中能与碘生成蓝绿色的络合物的特性,建立了用分光光度法测定其含量的简便、快速的分析方法。实验结果显示:该方法的标准曲线线性良好,相关系数均大于0.999,相对平均偏差小于0.3%,加标回收率大于98%。表明该方法准确、可靠。The determination of PVA content in desizing wastewater by spectrophotometry is described in this paper. PVA in desizing wastewater can react with iodine in acidic medium to form a blue-green colored complex. Spectrophotometry can be used to determine PVA content. The calibration curve of this method shows good linearity,correlation coefficient is higher than 0.999. Its relative mean deviation is less than 0.3% . The recovery of added standard is more than 98%. Experimental results show that this method is reliable and accurate.

关 键 词：退浆废水 PVA含量 分光光度法 

分 类 号：O657.71[理学—分析化学]