摘要
目的使用原子吸收石墨炉分析技术,建立一种简便、快速、可靠的检测酱油和醋中镍的方法,准确的测定不同种类、不同产地的酱油和醋中的镍元素,满足食品风险监测要求。方法通过对石墨炉原子吸收方法升温程序的灰化温度和原子化温度的优化、灰化阶段加氧和适当的基体改进剂的使用,试样只需经过简单的稀释即可检测,避免常规的湿法消解和微波消解带来的繁琐前处理工作、试剂污染、试剂消耗和容器污染问题。结果石墨炉原子吸收法可以直接测试酱油和醋中的镍元素,使用石墨炉原子吸收方法直接测试酱油和醋中的镍元素结果稳定性好,加标回收率为92.49%～103.3%。结论使用石墨炉原子吸收法直接测试酱油和醋中的镍,方法简便,快速,无需消解和额外的试剂消耗。该方法分析测试酱油和醋样品操作简便,结果可靠。
Objective A simple,rapid and reliable method for the determination of nickel in soy sauce and vinegar was established by using graphite furnace atomic absorption spectrometry(GFAAS).Methods By optimizing the ashing temperature and atomization temperature of the heating program of graphite furnace atomic absorption spectrometry,adding oxygen in the ashing stage and using proper matrix modifier,the sample can be detected by simple dilution,avoiding the tedious pretreatment work,reagent pollution and reagent digestion caused by conventional wet digestion and microwave digestion.Consumption and pollution of containers.Results Graphite furnace atomic absorption spectrometry can directly test nickel in soy sauce and vinegar.Graphite furnace atomic absorption spectrometry can directly test nickel in soy sauce and vinegar with good stability.The recovery of nickel is 92.4%~103.3%.Conclusion Graphite furnace atomic absorption spectrometry(GFAAS)is a simple and rapid method for the direct determination of nickel in soy sauce and vinegar.The method is simple and reliable for the analysis of soy sauce and vinegar samples.
作者
王汉青
WANG Hanqing(Clinical Laboratory,Center for Disease Control and Prevention of Lishui District,Nanjing Jiangsu 211200,China)
出处
《中国卫生标准管理》
2018年第24期8-10,共3页
China Health Standard Management
关键词
原子吸收
石墨炉
镍
醋
酱油
食品安全
atomic absorption spectrometry
graphite furnace
nickel
vinegar
soy sauce
food safety
