微波消解电感耦合等离子体质谱法测定大气气溶胶中的铂元素  

Determination of Trace Platinum in Aerosol Particles by Microwave Digestion-ICPMS

作　　者：杨永兴[1] 李玉兰[1] 谈明光[1] 陆文忠[1] 李晓林[1] 李燕[1] 张桂林[1] 

机构地区：[1]中国科学院上海应用物理研究所

出　　处：《分析科学学报》2007年第3期249-252,共4页Journal of Analytical Science

基　　金：国家自然科学基金重大项目(No.10490182);国家自然科学基金(No.10375084);中科院知识创新工程项目(KJCXZ-SW-No.1)

摘　　要：采用高压密闭微波消解系统消解样品,结合电感耦合等离子体质谱(ICP-MS)法,测定了上海市区大气气溶胶样品中Pt元素的含量。实验采用数学校正方法扣除HfO复合离子对Pt元素测定的干扰,用标准溶液模拟样和铂族元素标准物质检验方法的可靠性,其测定值与标准值相吻合。Pt、Hf的检出限分别为0.3 ng/L、3.0 ng/L;Pt和Hf的空白值分别为1.0±0.1 ng/L和29.0±1.0 ng/L。对采集的3个气溶胶样品的测定结果表明:上海市区大气气溶胶中Pt的平均含量为1.5±1.0 pg/m3,低于世界其他城市。A method for the determination of trace platinum in aerosol particles by inductively coupled plasma mass spectrometry （ICP-MS） with microwave digestion for samples pretreatment was developed. The interference of HfO^＋ to Pt in samples was corrected by a mathematical correction. Analytical quality control was carried out by analyzing simulated standard solutions and certified reference materials （GBW07290, BCR-723）. It was found that the results obtained were in good agreement with the standards values. The detection limits of Pt and Hf were 0.3 ng/L and 3.0 ng/L, respectively,and the blank values of Pt and Hf were 1.0±0. 1 ng/L and 29. 0 ±1. 0 ng/L, respectively. The average concentration of Pt in aerosol particles of Shanghai City was 1.5±1.0 pg/m^3 ,which is lower than other countries in the world.

关 键 词：微波消解 电感耦合等离子体质谱(ICP-MS) 气溶胶 铂 三元催化转换器 

分 类 号：O657.63[理学—分析化学]