气相萃取法测定皮革中乙醛含量的研究  

Determination of Acetaldehyde Emission in Leather by Gas Extraction Method

作　　者：任露萍 罗建勋[1] 马贺伟[1] REN Luping;LUO Jianxun;MA Hewei(College of Material and Textile Engineering,Jiaxing University,Jiaxing 314001,China)

机构地区：[1]嘉兴学院材料与纺织工程学院,浙江嘉兴314001

出　　处：《皮革科学与工程》2022年第1期68-71,共4页Leather Science and Engineering

基　　金：浙江省基础公益研究计划项目(LGC21B070002);嘉兴市科技计划公益类项目(2021)。

摘　　要：室内装饰用皮革中的乙醛已成为消费者及行业关注的对象,相关的测试方法成为行业及企业的需求。实验中参照甲醛测定过程中所采用的水溶液萃取法及气相萃取法,基于2’4-二硝基苯肼衍生化、液相色谱法对筛选出的皮革中乙醛的含量进行测定。结果表明,水溶液萃取法未能检测出皮革中的乙醛,气相萃取法检测出样品中乙醛含量在0.7~1.8 mg/kg之间。气相萃取法检测时,随预处理温度的升高,样品中乙醛的释放量明显增大。样品于60℃下处理3 h乙醛的释放量基本达到平衡。实验结果证实了样品预处理方式及处理条件是实现乙醛有效检测的关键。Acetaldehyde emission in upholstery leather has been focused by the customers and leather enterprises,and the related test method is required.In this investigation,the water-extraction operation and gas-extraction operation were both applied which consisted of derivatization by 2,4-dinitrophenylhydrazine(DNPH)and detection by HPLC,for determining acetaldehyde emitted from leather.The results indicated that method based on water-extraction was incapable of detecting acetaldehyde in leather,while gas-extraction operation can screen acetaldehyde with concentrations at the range of 0.7-1.8 mg/kg.For gas extraction method,higher temperature could lead to larger emission of acetaldehyde.Incubation at 60℃for 3 h,the release of acetaldehyde reached equilibrium.The results revealed that the way of sample pretreatment and the treatment conditions are critical for detection of acetaldehyde in leather.

关 键 词：皮革 乙醛 检测 气相萃取法 

分 类 号：TS57[轻工技术与工程—皮革化学与工程]