Determination of Al in Oxalic Acid by Laser Ablation Coupled With Inductively Coupled Plasma Mass Spectrometry

3rd International Symposium on Resource Exploration and Environmental Science

生态环境科学

He, Jing^1 ; Han, Huayun^1 ; Su, Shuang^1 ; Zhang, Pei^1

College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou

450000, China^1

关键词: External calibration;    Industrial production;    Laser ablation inductively coupled plasma mass spectrometries (LA ICP MS);    Limit of detection;    Microwave digestion;    Optimized parameter;    Sample decomposition;    Trace elemental analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/300/5/052048/pdf
DOI  :  10.1088/1755-1315/300/5/052048

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Oxalic acid is an important reagent in industrial production. The content of metal impurities in oxalic acid affects the quality of the product. Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) is a widely accepted method for direct sampling of solid materials for trace elemental analysis. In this work, a matrix match external calibration was used to quantify Al in oxalic acid by LA-ICPMS. Laser ablation instrument conditions were evaluated in order to achieve the best intensity. Calibration in the range of 50-2000 ng•g-1 was used. By using the optimized parameters, limit of detection was 3.41 ng•g-1. The accuracy evaluated by comparison with results obtained from solution analysis by ICP-MS after sample decomposition by microwave digestion was relatively good.