液相色谱法快速检测纸质品中4种荧光增白剂

Quick detection of 4 fluorescent brighteners in paper products with LC method

利用高效液相色谱建立对纸质食品外包装表面荧光增白剂367、荧光增白剂378、荧光增白剂WS、荧光增白剂184等四种荧光增白剂的测定方法。测试中,以DMF为提取溶剂,对纸质品中荧光剂进行提取,并采用液相色谱法进行定性和定量检测。在紫外检测波长为369nm,乙腈为流动相,流动相流速为1,OmL/min的检测条件下,四种荧光剂达到了基线分离。该方法适于纸质品中以上四种荧光增白剂的快速测定。

The use of high performance liquid chromatography (HPLC) is a measuring method for fluores-cent white ning age nt (FWA) 367,378,WS and 184 on the surface of paper food packagi ng.The fluorescent agents are extracted by DMF as the extract! on solve nt from the paper product,followed by qualitative and quantitative analysis by liquid chromatography (LC).Under the detection conditions of ultraviolet detection wavelength of 369 nm,mobile-phase is acet on itrile and the mobile-phase flow at 1.0 mL/min,four FWAs can achieve baseline separation.This method is suitable for quick detection of the afore-mentioned four FWAs in paper products.