摘要
手工纸样品在190℃微波辅助下,采用硝酸-过氧化氢加热消解,电感耦合等离子体质谱(ICPMS)法同时测定传统手工纸中砷、铅、铬、镍、锑和镉6种重金属元素含量。使用碰撞技术消除ArCl离子对砷的干扰。优化了反应电压(RPq)、碰撞气体流量等测试条件,6种元素仪器检出限在0.003～0.02mg/kg,7次重复性相对标准偏差(RSD)在1.7%～2.6%,分别在样品中加标3和7mg/kg,回收率在88.9%～107%。6批次手工纸样品中有砷、铅、铬、镍和锑元素检出。方法检出限低、快速、准确,适用于传统手工纸中6种杂质重金属元素同时测定。
Samples of handmade paper was pretreated by microwave assisted digestion, and the contents of As, Pb, Cr, Ni, Sb and Cd in the handmade paper were determined by ICP-MS. Kinetic energy discrimination (KED) were used to overcome disturbance of ions,such as ArCl. The parameters of the test methods were optimized seriously, including RPq and affects of different Neb gas flow rate, etc. Detection limits of the 6 elements were in the ranges of 0.003-0.02 mg/kg, 7 times the repeatability RSD were in the range of 1.7% to 2.6%, 3.0 mg/kg and 7.0 mg/kg mix standard solution were added in the samples respectively. Values of recovery and RSD’s were found in the range of 88.9%-107% and 1.7%-2.6%. As, Pb, Cr, Ni and Sb were detected in 6 samples. The method is fast, accurate and has a low detection limit. It is suitable for determination of impurity metal ions in handmade paper.
作者
禄春强
李文慧
章若红
孙衎
罗婵
万峰
LU Chunqiang;LI Wenhui;ZHANG Ruohong;SUN Kan;LUO Chan;WAN Feng(Shanghai Institute of Quality Inspection and Technical Research, Shanghai 201114, China)
出处
《中国无机分析化学》
CAS
2019年第2期1-4,共4页
Chinese Journal of Inorganic Analytical Chemistry
基金
市场监管总局自筹科研项目(2017Qk084)
上海市科学技术委员会研发公共服务平台建设项目(14DZ2293000)
