采用紫外消化技术处理样品 ,流动注射氢化物发生原子吸收光谱法测定酱油中砷。方法的检出限为 0 .14ng·ml- 1,线性范围为 0 .80～ 2 4 .0ng·ml- 1,相对标准偏差为 3.5 %～ 8.4 % ,样品加标回收率为 96 .9%～ 10 6 .5 %。方法的灵敏度高 ,选择性好 ,试剂及样品用量少 ,操作方便 ,分析快速 ,每小时可分析 6 0个样品 ,适于推广应用 The sample was treated by ultraviolet digestion technique, and the determination of arsenic in soy sauce by flow injection hydride generation atomic absorption spectrometry. The detection limit of the method was 0.14ng · ml-1, the linear range was 0.80 ~ 24.0ng · ml-1, the relative standard deviation was 3.5% -8.4%, the recoveries of spiked samples were 96.9% ~ 10 6 .5%. The method has high sensitivity, good selectivity, less reagent and sample usage, convenient operation, fast analysis, 60 samples per hour, suitable for popularization and application