ICP-MS同时快速测定环境空气中15种金属污染物  

Rapid and Simultaneous Determination of 15 Metal Pollutants in Ambient Air by ICP-MS

作　　者：乐小亮[1] 毛慧[1] 吴晶[1] 

机构地区：[1]江苏省泰州市环境监测中心站,江苏泰州225300

出　　处：《环境监控与预警》2015年第4期12-15,共4页Environmental Monitoring and Forewarning

摘　　要：用玻璃（或石英）纤维滤膜采集环境空气样品,在氢氟酸和浓硝酸溶液中消解澄清,用电感耦合等离子体质谱法（ICP-MS）测定含量。结果表明,进口滤膜重金属本底值较低且均一,更适合于环境空气中重金属监测。标准品滤膜E023-1125测定值均在认定值附近,相对误差在0.308%~4.96%之间,加标回收率在95.7%~107%之间,检出限在0.115~3.98 ng/m^3之间,满足日常环境监测分析要求。The air sample was collected by a glass or quarts fiber filter, which was digested with hydrofluoric acid and concentrated nitric acid in order to dissolve the fiher and adsorb particles completely. The metal concentration of resulting sample was determined using ICP-MS. The results showed that the background concentration of heavy metals in the imported filter was lower and more uni- form than that in the domestic filter, and the imported filter was more suitable for measuring heavy metals in ambient air. The meas- urement values of the standard membrane E023-1125 were around the identified values, with a relative error range of 0. 308% 4.96% and a recovery range of 95. 7% - 107%. The detection limits of the metal elements ranged from 0. 115 ng/m^3 to 3.98 ng/m^3 , which fully met the requirements of the daily environmental monitoring analysis.

关 键 词：环境空气 重金属 玻璃纤维滤膜 电感耦合等离子体质谱仪 氢氟酸消解 

分 类 号：O657.6[理学—分析化学] X831[理学—化学]