皮革中镉含量的阳极溶出伏安极谱法测定  

Determination of Cadmium Content in Leather with Anodic Stripping Voltammetric Polargraphy

作　　者：朱正鑫[1] 周裕婷[2] 张宗才[1] 戴红[1] 

机构地区：[1]四川大学制革清洁技术国家工程实验室,四川成都610065 [2]四川大学轻纺与食品学院,四川成都610065

出　　处：《中国皮革》2011年第21期30-32,共3页China Leather

摘　　要：建立了微波消解法处理皮革样品、阳极溶出伏安极谱法测定样品溶液中镉含量的检测方法。在草酸铵-氯化铵-盐酸缓冲溶液(pH值为1.65)中加入样品溶液,富集时间为60s,氮气脱氧时间为300s,线性范围为0.2～100μg/L,检测限为0.1μg/L,相对标准偏差(n=8)为7.83%,回收率在97.3%～107.1%之间。结果表明,伏安极谱法测定皮革中镉含量简便可行。Microwave digestion method was used in sample preparation for its fast digestion and safe operation. And then an anodic stripping vohammetric method was developed for determination of cadmium content in leather. The sample solution mixed with ammonium oxalate - hydrochloric acid - ammonium chloride buffer solution（ pH = 1.65 ） was purged with oxygen free nitrogen gas for 300s before deposition of the metals was carried out by hanging mercury drop electrode （HMDE） for 60s. Limits of quantiration of dris method are 0.1 μg ·L^-1. Relative standard deviations for 8 replicate determinations of leather sample is 7, 83 %. Recovery percentage is in the range of 97.3 % - 107.1%. The proposed method is simple, convenient and sensitive with good linearity, feasibility and reliability.

关 键 词：镉 皮革 微波消解 伏安极谱 

分 类 号：TS57[轻工技术与工程—皮革化学与工程]