皮革加速老化处理后游离甲醛的测定  

Determination of free formaldehyde after leather accelerated aging treatment

作　　者：马玉洁[1,2] 陈瑾 杨红 余惠琳 单志华 MA Yuyjie;CHEN Jin;YANG Hong;YU Huilin;SHAN Zhihua(College of Chemistry and Material Science,Sichuan Normal University,Chengdu 610068,China;The Key Laboratory of Leather Chemistry and Engineering (Sichuan University),Ministry of Education,Chengdu 610065,China)

机构地区：[1]四川师范大学化学与材料科学学院,四川成都610068 [2]皮革化学与工程教育部重点实验室(四川大学),四川成都610065

出　　处：《中国皮革》2019年第8期58-62,共5页China Leather

摘　　要：根据甲醛与酚试剂发生化学反应生成嗪,继而被高铁离子氧化生成一种蓝绿色化合物,该化合物的颜色深浅与甲醛浓度成正比,在波长630 nm处有最大吸收,对流动注射-分光光度检测法一系列参数优化,最终确定试验的最佳仪器操作参数和反应条件.将流动注射技术-分光光度联用,在排除无铬鞣革中微量元素作为干扰离子下,对于加速老化后皮革萃取液中甲醛的检出,提高了检测精度,有效可靠地建立了无铬皮革游离甲醛检测的新方法.Piperazine can be generated by formaldehyde react with phenol,it could be oxidized in acid solution byferric ion,and a blue-green compound was generated.Through a series of optimization experiments,the optimal instrument operation parameters and reaction conditions were determined.This method was applied to the detection of formaldehyde in the leather extract after accelerated aging.Combined with flow injection technology,the detection of formaldehyde in leather extract after accelerated aging can eliminate interference and improve detection accuracy.

关 键 词：无铬鞣革 加速老化 流动注射 分光光度法 甲醛 

分 类 号：TS56[轻工技术与工程—皮革化学与工程]