HYDRIDE GENERATION ATOMIC FLUORESCENCE SPECTROMETRIC DETERMINATION OF ULTRATRACE ARSENIC IN HIGH PURITY INDIUM OXIDE

作者：Zhou, Sulian; Huang, Zhaomin; Gong, Xinling; Zhu, Wenyuan^*

来源：Analytical Letters, 2012, 45(14): 2006-2013.

DOI：10.1080/00032719.2012.680052

• Arsenic
• Distilling
• High purity indium oxide
• Hydride generation atomic fluorescence spectrometry
• Preconcentration

A simple, sensitive, and interference free method was proposed for the determination of total arsenic in high purity indium oxide by hydride generation atomic fluorescence spectrometry (HG-AFS). Preconcentration was carried out by distillation of volatile arsenic trichloride. Hydrazine sulfate was used as a prereductant to reduce As (V) to As (III). The volatile arsenic trichloride generation was based on the reaction between As (III) and hydrochloric acid, and vapors were absorbed with water. The method provides a linear response range of 2 ng/mL-70 ng/mL, a detection limit of 0.1 ng/mL, a recovery of 96%-113%, and an average relative standard deviation of 2.42%. The method was validated by means of interlaboratory comparative analysis with the proposed method HG-AFS, and the comparison of data by using proposed method HG-AFS and reference methods of ICP-OES and spectrophotometry.

• 出版日期2012
• 单位桂林理工大学