摘要
目的:测定党参中Cr、Cd、Zn三元素的残留量,并进行污染评价。方法:样品经微波消解后,采用石墨炉原子吸收光谱法对Cr和Cd的含量进行分析,采用火焰原子吸收光谱法对Zn的含量进行分析。结果:3个元素的线性关系良好,方法检测限满足样品测定需求,精密度良好,回收率在87.3%~94.6%,符合Cr、Cd、Zn的测定需求。结论:党参中Cr污染较严重,Cd有一定的风险性,Zn含量在安全范围内,实验结果可为党参重金属及有害元素限量标准的制定提供数据支撑。
Objective:To determine the residual amount of Cr,Cd and Zn in codonopsis pilosula(Franch.)Nannf.and evaluate the degree of pollution.Methods:After microwave digestion,the contents of Cr and Cd were analyzed by graphite furnace atomic absorption spectrometry,and the contents of Zn were analyzed by flame atomic absorption spectrometry.Results:The linear relationship of the three elements was good.The detection limit of the method met the requirement of sample determination,and the precision was good.The recoveries were 87.3%~94.6%,which met the requirement of Cr,Cd and Zn determination.Conclusion:The Cr pollution of Radix codonopsis from three producing areas was serious.Cd has a certain risk,and Zn is within the safe range.The experimental results can provide data support for the formulation of the limit standard of heavy metals and harmful elements of Codonopsis Codonopsis.The experimental results can provide data support for the formulation of the limit standard of heavy metals and harmful elements of codonopsis pilosula(Franch.)Nannf.
作者
魏千禧
于娇娇
柳樱华
李红霞
Wei Qianxi;Yu Jiaojiao;Liu Yinghua;Li Hongxia(College of Petrochemical Engineering,Lanzhou Petrochemical University of Vocational Technology,Lanzhou 730060,China;Production Quality Control Center Yantai Quality Control,Wanhua Chemical Group Co.,Ltd.,Yantai 264002,China;Quality Inspection Department of Lanzhou Petrochemical Company,Lanzhou 730060,China)
出处
《山东化工》
CAS
2023年第21期176-178,183,共4页
Shandong Chemical Industry
基金
国家级大学生创新训练计划项目(202010838006)
甘肃省高等学校创新基金项目(2022A-214)。
关键词
党参
微波消解
原子吸收光谱法
重金属
codonopsis pilosula(Franch.)Nannf.
microwave digestion
atomic absorption spectrometry
heavy metal
