能量色散-X射线荧光光谱法测定中草药痕量镉、铅、铜

LIAO Xueliang,LIU Mingbo, ZHENG Qi, WANG Xiangzheng, CHEN Yu, WANG Jingwei,CHENG Dawei,NI Ziyue,SHEN Xuejing

Chinese Jorunal of Inorganic Analytical Chemistry(2023)

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Abstract
为寻求一种能够直接对中草药中重金属进行快速检测的方法,采用压片法对样品进行前处理,建立了能量色散-X射线荧光光谱法快速检测中草药中痕量重金属镉、铅、铜元素的方法.在20 min即可完成检测,镉、铅、铜检出限分别为0.072、0.21、0.34 mg/kg,测试结果表明与原子吸收光谱法和电感耦合等离子体质谱(ICP-MS)法相比,方法数据稳定性和准确度良好,具有快速、准确、简单的优点,能够满足药典中对重金属元素的限量要求,适用于现场快速检测与质量控制检测.
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Key words
Chinese herbal medicine,heavy metals,cadmium,X-ray fluorescence,tablet pressing,rapid detection
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