摘要
用电位滴定法测定纤维玻璃中的氯含量,采用加标回收率法验证回收率在95%～105%之间。通过对比电位滴定法中样品的熔样方法,选出采用碳酸钠熔融法最具可行性。再通过比较电位滴定法、硫氰酸汞法和氯化银比浊法的测定结果,3种方法结果接近,电位滴定法操作更加简单、环保、准确。
Chlorine in fiber glass was determined by potentiometric titration and its recovery rate was 95% ～ 105%. By comparing the sample melting methods in the process of potentiometric titration,sodium carbonate fusion was regarded as the most practical method. Furthermore,the results of three test methods,i. e. potentiometric titration,mercury thiocyanate method and silver chloride turbidimetry were compared,coming to a conclusion that the results were similar and potentiometric titration was more simple,environment-friendly and accurate.
出处
《玻璃纤维》
CAS
2014年第2期11-14,共4页
Fiber Glass
关键词
纤维玻璃
氯含量
电位滴定法
加标回收率
fiber glass
chlorine content
potentiometric titration
recovery rate by standard addition
