活性炭富集石墨炉原子吸收测定土壤样品中超痕量铂  

Determination of Ultra-trace Platinum in Soil Samples by GF-AAS Method

作　　者：藏吉良 丁春霞[2] 吴建政[2] 赵伟[2] 张帆[2] 王筱丽[2] 孙爱琴[3] 

机构地区：[1]河南省核工业地质局,河南郑州450004 [2]河南省岩石矿物测试中心,河南郑州450012 [3]河南省地质调查院,河南郑州450007

出　　处：《资源导刊（地球科技版）》2012年第5期47-49,共3页

基　　金：国土资源部公益性行业项目《栾川矿集区深部找矿示范研究》（201111007-4）;国土资源部行业专项项目《盆地深穿透地球化学探测》（SinoProbe04-03）

摘　　要：样品用HCl-H2O2分解后，固液分离，在滤液中加入10％SnCl2，加水使滤液成5％-15％盐酸溶液，用超低灰分活性炭吸附铂。活性炭灰化，灰分用王水溶解后，在1O％的盐酸溶液中用GF—AAS方法测量土壤样品中超痕量铂。本文研究了样品的分解方法、测定介质及酸度、石墨炉灰化温度、原子化温度对测定的影响。测定方法的检出限达到0．11×10^-9，精密度（RSD，n=12）为4％-9％，经国家一级标准物质分析验证，结果与标准值相符。After the soil sample dissolved by HC1-H202, the solution is adjusted to 5%-15% and the Platinum in the solution is adsorbed by active carbon. The active carbon is ashes and re-dissolved by pure equa- regia and determinated by GF-AAS. The determination conditions for acidity, media and the GF-AAS ash and graphite furnace atomizer and its effect to the determination are investigated in detail in the paper. The detection limit of the method is 0.11 × 10-9 for Platinum with RSD of 4%-9% for 12 times determination. And the results are fulfilling with the national standard.

关 键 词：石墨炉原子吸收 土壤样品 超痕量铂 涂层石墨管 

分 类 号：X517.02[环境科学与工程—环境工程]