论文部分内容阅读
本文采用两种同时测定荧光增白剂工业产品中１，４－（２，４′－氰基苯乙烯基）苯（记为ＥＢ）和异构体１，４－双（２－氰基苯乙烯基）苯（记为ＥＲ）两组分的方法。一种是ＨＰＬＣ法，采用Ｓｈｉｍ－ｐａｃｋＣＬＣ－ＳＩＬ柱（５μｍ，６．０ｍｍｉ．ｄ．×１５０ｍｍ），正己烷－乙酸乙酯（９０∶１０Ｖ／Ｖ）为流动相，流速２ｍＬ／ｍｉｎ，柱温３０℃，检测波长ＵＶ３６０ｎｍ，方法简单、准确、快速。另一种是因子分析－紫外光度法，它对吸收光谱严重重叠的该增白剂产品中两组分的例行分析非常适用，效果较好，测其所含的ＥＢ、ＥＲ两组分的回收率均在１００±８％之内。
In this paper, two simultaneous determination of optical brightener industrial products 1,4 - (2,4’-cyanostyryl) benzene (referred to as EB) and the isomer 1,4-bis (2-cyanobenzene Vinyl) benzene (denoted ER) two components. One is a HPLC method using Shim-packCLC-SIL column (5μm, 6.0mmi.d. × 150mm), n-hexane-ethyl acetate (90:10V / V) as mobile phase at a flow rate of 2mL / 30 ℃, detection wavelength UV360nm, the method is simple, accurate and fast. The other is the factor analysis - UV spectrophotometry, its serious overlapping absorption spectrum of the two components of the brightener product is very suitable for routine analysis, the effect is better, it contains the test of EB, ER two components The recovery rates are within 100 ± 8%.