ICP–AES法同时测定食品包装铝箔中锌、铅、镉、砷的溶出量  

Simultaneous Determination of Zn,Pb,Cd,As Released from Food Packaging Aluminum Foil by ICP–AES

作　　者：黄让明 陈泽平 辛希奕 陈浩然 朱虹 

机构地区：[1]广东省汕头市质量计量监督检测所,广东汕头515041

出　　处：《化学分析计量》2014年第4期54-56,共3页Chemical Analysis And Meterage

摘　　要：建立了ICP–AES法同时测定食品包装铝箔中锌、铅、镉、砷溶出量的方法。以4%乙酸溶液浸泡样品，室温放置24 h，分析线为Zn 213.856，Pb 220.353，Cd 226.502，As 193.759 nm。Zn，Pb，Cd，As的线性范围分别为0.3～5.0，0.1～2.0，0.01～0.2，0.03～0.5 mg／L，线性方程分别为Y=23487.27X＋769.79，Y=6713.35X＋38.46，Y=30562.52X＋362.02， Y=6448.97X＋13.57；相关系数分别为0.9999，0.9998，0.9999，0.9995；检出限分别为0.0096，0.0037，0.0004，0.0139 mg／L；加标回收率为96.5%～100.5%；相对标准偏差为1.38%～3.06%（n=6）。该方法简便快速，测定结果准确。ICP–AES method was developed for the simultaneous determination of Zn, Pb, Cd, As, which released from food packaging aluminum foil. The sample was extracted with 4%acetic acid, placed at the room temperature for 24 h. The analytical spectral lines were Zn 213.856,Pb 220.353,Cd 226.502,As 193.759 nm. The results showed that the linear rang of 4 elements were 0.3–5.0, 0.1–2.0, 0.01–0.2, 0.03–0.5 mg/L, and the linear equations were Y=23 487.27X＋769.79, Y=6 713.35X＋38.46, Y=30 562.52X＋362.02, Y=6 448.97X＋13.57 with correlation coefficients of 0.999 5, 0.999 8, 0.999 9, 0.999 9, and the detection limits were 0.009 6, 0.003 7, 0.000 4, 0.013 9 mg/L for Zn, Pb, Cd, As, respectively. The spiked recoveries ranged from 96.5%to 100.5%with relative standard deviations of 1.38%–3.06%（n=6）. The results demonstrated that the method was simple, rapid and accurate.

关 键 词：ICP-AES 食品包装铝箔 锌 铅 镉 砷 溶出量 

分 类 号：O657.31[理学—分析化学]