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目的:建立测定涉水产品中锡含量测定的石墨炉原子吸收法并通过电感耦合等离子体质谱法(ICP-MS)进行验证。方法:样品经模拟自来水浸泡24 h,以硝酸钙溶液作为基体改进剂,石墨炉原子吸收光谱法进行测定,ICP-MS法进行验证。结果:线性范围0~10μg/L,相关系数0.9993,检出限0.21μg/L,回收率96.3%~102.2%,RSD为1.6%~3.7%。石墨炉方法测量结果与ICP-MS法测量结果一致。结论:该方法操作简单、方便,稳定性好,测量结果准确可靠,可以用于涉水产品中锡的测定。
OBJECTIVE: To establish a graphite furnace atomic absorption spectrometry method for the determination of tin in wading products and to verify by inductively coupled plasma mass spectrometry (ICP-MS). Methods: The samples were immersed in simulated tap water for 24 h. Calcium nitrate solution was used as matrix modifier and determined by graphite furnace atomic absorption spectrometry (ICP-MS). Results: The linear range of 0 ~ 10μg / L, the correlation coefficient of 0.9993, the detection limit of 0.21μg / L, the recovery rate of 96.3% ~ 102.2%, RSD of 1.6% to 3.7%. Graphite furnace method measurement results and ICP-MS method measurement results. Conclusion: The method is simple, convenient, stable, accurate and reliable, and can be used for the determination of tin in wading products.