低压离子色谱法检测轻工产品中游离甲醛和戊二醛的研究

Determination of Free Formaldehyde and Glutaraldehyde in Leathers by Low Pressure Ion Chromatography

基于过氧化氢氧化原理,采用低压离子色谱-电导检测器,建立了轻工产品(皮革、竹席)中甲醛和戊二醛的快速检测方法,实验过程包括:试剂制备、样品的预处理、色谱条件的优化、分析方法的评价。甲醛和戊二醛的色谱条件为:柱长14 cm,洗脱流速0.80 m L/min,进样体积300μL,反应圈长度5 m。该条件下,各种醛的线性范围为0.1 mg/L^20.0 mg/L,仪器检出限分别为1.6 mg/kg和2.8 mg/kg,方法的回收率高于98.6%,该方法成功应用于轻工产品中甲醛和戊二醛的测定。

A method was developed for the determination of formaldehyde and glutaraldehyde in light industrial products （leathers and bamboo mat） using hydrogen peroxide as oxidant followed by Low Pressure Ion Chromatography-conductivity detector. Test process included： reagent preparation, sample pretreatment, optimizations of chromatographic condition and evaluation of the method. The chromatographic conditions of the formaldehyde and glutaraldehyde：column length was 14 cm, elution flow rate was 0.8 mL/min, injection volume was 300μL, and reaction loop length was 5m. Under these conditions, the linear range was 0.1 mg/L^20.0 mg/L, the quantification limits for the desired compounds were 1.6 mg/kg and 2.8 mg/kg, and the recoveries were higher than 98.6%. The proposed method was successfully applied for determining formaldehyde and glutaraldehyde in leathers.