微波消解-电感耦合等离子体质谱(ICP-MS) 同时测定塑料包装材料中有毒有害元素

邱 静; 郑 平; 韩 芳; 张 志; 王勇 霞

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微波消解-电感耦合等离子体质谱(ICP-MS) 同时测定塑料包装材料中有毒有害元素
邱静¹, 郑平², 韩芳², 张志², 王勇霞²
1.安徽大学, 合肥 230039;2.安徽出入境检验检疫局技术中心, 合肥 230022

摘要:

采用硝酸-过氧化氢消解体系,及高压密闭微波技术处理塑料包装材料,建立了电感耦合等离子体质谱法同时测定塑料包装材料中铅、镉、砷、铬、锑、汞、硒、钡、镍、锡、锶、铊多种有毒有害元素的方法。方法的检出限为0.0 2~0.2 0μ g / L,相对标准偏差(RS D)小于1 0%,加标回收率为8 8.0%~1 1 7.0%。该方法简单、快速、灵敏、准确度好。

关键词: 电感耦合等离子体质谱(ICP-MS) 微波消解塑料包装材料元素

DOI：

分类号:TB484.3; TB487

基金项目:国家质检总局行业标准制定项目(2010B009)

Determination of Hazardous Elements in Plastic Packaging Materials by Microwave Digestion with ICP-MS

QIU Jing¹, ZHENG Ping², HAN Fang², ZHANG Zhi², WANG Yong-xia²

1.Anhui University, Hefei 230039, China;2.Anhui Entry-Exit Inspection and Quarantine Bureau Technical Center, Hefei 230022, China

Abstract:

Plastic packaging materials were digested by mixed acids of nitric acid and hydrogen peroxide solution using high pressure and closed microwave digestion technology. A method for the determination of Pb, Cd, As, Cr, Sb, Hg, Se, Ba, Ni, Sn, Sr and Tl in packaging materials by ICP-MS was established. The detection limits are in the range of 0.02～0.20 μg/L; the relative standard deviations are less than 10%; the recoveries are in the range of 88.0%～117.0%. The results proved that this method is simple, accurate, and reliable.

Key words: inductive coupled plasma mass spectrometry (ICP-MS) microwave digestion plastic packaging materials elements