微波消解-电感耦合等离子体发射光谱法测定染料中10种重金属元素

Determination of Ten Heavy-metal Elements in Dyestuffs by ICP-AES with Microwave Digestion

建立了测定染料中10种重金属元素的微波消解电感耦合等离子体发射光谱(ICP-AES)法。比较了不同样品的消解方法,并确定了消解的最佳方法和条件;优化了仪器工作条件,选择出被测元素的最佳分析谱线,合理地进行了背景扣除;各元素的检出限以及加标回收率分别为0.0024～11.42mg/kg、83.3%～110%。该方法与标准方法中的原子吸收相比,缩短了分析时间,提高了检测效率。

Ten heavy-metal elements such as Cd,Co,Cr,Cu,Mn,Ni,Pb,Sb,Fe,Zn in dyestuffs are quickly determined via combination of microwave digestion with ICP-AES.Compared to standard method,this new method features simple,rapid and accurate operation,as well as high sensitivity.The addition recoveries were from 83.3%～110%.