右归丸中5种重金属元素的含量分析 点击下载
论文标题: 右归丸中5种重金属元素的含量分析
英文标题:
中文摘要: 目的:考察市售右归丸中铜(Cu)、砷(As)、镉(Cd)、汞(Hg)、铅(Pb)等5种重金属元素的含量,并评价其安全风险。方法:以钇(89Y)、铟(115In)、铋(209Bi)为内标,采用电感耦合等离子体质谱(ICP-MS)法测定各元素的含量。设置ICP-MS的条件为雾化气流量0.95L/min,辅助气流量1.2L/min,等离子体气(氩气)流量18L/min,泵速30r/min;设置电感耦合等离子体射频功率为1200W,模拟阶段电压为-1750V,脉冲阶段电压为1300V,偏转装置电压为-12V,检测器为模拟和脉冲双模式。对各元素含量测定方法进行方法学考察,并对45批市售右归丸样品进行测定。运用危害指数(HI)对各元素非致癌性风险进行分析,并拟定各元素的最大残留阈值(MRL)。结果:Cu、As、Cd、Hg、Pb检测质量浓度线性范围分别为10~200、1~50、0.4~30、0.2~6、2~100μg/L,r均大于0.9990;定量限分别为0.67、0.23、0.20、0.07、0.27μg/L,检测限分别为0.20、0.07、0.06、0.02、0.08μg/L;精密度、稳定性、重复性试验的RSD均小于3.5%(n=6或n=5);平均加样回收率为92.96%~100.89%,RSD为2.23%~3.62%(n=3)。45批右归丸样品中Cu、As、Cd、Hg、Pb的平均含量分别为2.72、0.28、0.07、0.05、0.62mg/kg,各元素的叠加HI小于1。右归丸中5种重金属元素的含量均低于拟定的MRL(Cu、As、Cd、Hg、Pb的MRL分别为20、2、1、0.2、5mg/kg或者111.11、4.44、2.22、1.48、8.89mg/kg)。结论:所建方法可用于测定右归丸中5种重金属的含量;市售右归丸的常见重金属污染率低,安全风险小。
英文摘要: OBJECTIVE:To investigate the contents of 5 kinds of heavy metal as copper (Cu),arsenic(As),cadmium (Cd),mercury(Hg)and lead (Pb)in Yougui pills ,and to evaluate its safety risk. METHODS :Using yttrium (89Y),indium (115In)and bismuth (209bi)as internal standard ,the contents of each element were determined by ICP-MS. ICP-MS condition included that atomization gas flow rate was 0.95 L/min,auxiliary gas flow rate was 1.2 L/min,plasma gas (argon)flow rate was 18 L/min,pump speed was 30 r/min. RF power of inductively coupled plasma was 1 200 W,the voltage in simulation stage was 1 750 V,the voltage in pulse stage was 1 300 V,the voltage of deflection device was -12 V,and the detector was in analog and pulse dual-mode. The determination methods of various elements were investigated ,and 45 batches of marketed Yougui pills were determined. Hazard index (HI)was used to analyze the non-carcinogenic risk of each element and calculate the maximum residual limit(MRL)of each element. RESULTS :The linear range of Cu ,As,Cd,Hg and Pb ranged from 10-200,1-50,0.4-30,0.2-6 and 2-100 μg/L(all r>0.999 0),respectively. The limits of quantitation were 0.67,0.23,0.20,0.07,0.27 μg/L. The limits of detection were 0.20,0.07,0.06,0.02,0.08 μg/L. RSDs of precision,stability and reproducibility tests were all lower than 3.5% (n=6 or n=5). Average recoveries were 92.96%-100.89%(RSD=2.23%-3.62%,n=3). Average contents of Cu ,As,Cd,Hg and Pb in 45 batches of Yougui pills were 2.72,0.28,0.07,0.05,0.62 mg/kg,and superimposed HI of each element was less than 1. The contents of 5 kinds of heavy metals in Yougui pills were lower than the proposed MRL (MRL of Cu ,As,Cd,Hg and Pb were 20,2,1,0.2,5 mg/kg or 111.11,4.44,2.22,1.48,8.89 mg/kg respectively ). CONCLUSIONS :Established method can be used for the determination of content of 5 kinds of heavy metal in Yougui pills ;the heavy metal pollution rate of marketed Yougui pills is low and the safety risk is small.
期刊: 2021年第32卷第19期
作者: 李存金,谢婷,周云峰,邓杰华,吴喆,黄招光
英文作者: LI Cunjin ,XIE Ting,ZHOU Yunfeng ,DENG Jiehua,WU Zhe,HUANG Zhaoguang
关键字: 右归丸;重金属;电感耦合等离子体质谱法;限度;最大残留阈值;危害指数
KEYWORDS: Yougui pills ;Heavy metals ;ICP-MS;Limit;Maximum residual limit ;Hazard index
总下载数: 81次
本日下载数: 2次
本月下载数: 81次
文件大小: 619.60Kb

* 注:未经本站明确许可,任何网站不得非法盗链资源下载连接及抄袭本站原创内容资源!在此感谢您的支持与合作!