《工作场所空气有毒物质测定锡及其化合物》(GBZ/T160.22—2004)自颁布以来,在推动我国职业卫生事业发展方面起到了重要作用。然而,其中的火焰原子吸收光谱法在样品处理过程中,因消化液中的硫酸挥发速度较慢,极大降低了样品处理效率,甚至容易出现检测结果偏低的情况[1-2]。鉴于此,很多学者对前处理方法提出了改进。如将硫酸用量减 Since the promulgation of the “Determination of Tin and Its Compounds in Air Toxics in the Workplace” (GBZ / T160.22-2004), it has played an important role in promoting the development of occupational health in our country. However, the flame atomic absorption spectrometry in the sample processing process, the digestion of sulfuric acid evaporation rate is slower, greatly reducing the sample processing efficiency, and even prone to low detection results [1-2]. In view of this, many scholars put forward the improvement of the pretreatment method. Such as the amount of sulfuric acid minus