Determination of Pb Content in Soil Samples by Graphite Furnace Atomic Absorption Spectrometry

• 作者: Feng Huang Yihu Zeng Jinxian Tang Ting Yang
• 来源期刊: 气象与环境研究：英文版
• 学科: 工学
• 关键词: 石墨炉原子吸收光谱法 土壤样品 铅含量 测定 运行参数 分析速度 痕量铅 硝酸钯
• 年，卷（期）: 2013,（9）
• 页码范围: 32-33
• 页数: 2页
• 分类号: TS272.7

摘要

[Objective]A method was established to determine trace Pb in soil by graphite furnace atomic absorption spectrometry.[Method]The pre-treatment of soil sample was conducted by nitric acid-perchloric acid-hydrochloric acid system.Palladium nitrate was added to eliminate matrix interference.Digestion acid,ashing and atomization temperature of the sample were selected.The operating parameters of instrument and temperature-rise program of graphite furnace were optimized.National standard matter was used to verify accuracy of the method.[Result]The detection limit for Pb was 0.27μg/g by graphite furnace atomic absorption spectrometry,and the recovery rate was 91.0%-96.1%.[Conclusion]The method had rapid analysis velocity,high sensitivity,less interference and easy operation.When applied to determination of trace Pb in the soil,the method obtained satisfactory results.