ICP-MS法同时测定地耳草药材中21种无机元素的含量
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篇名: ICP-MS法同时测定地耳草药材中21种无机元素的含量
TITLE:
摘要: 目的:建立同时测定地耳草药材中21种无机元素含量的方法。方法:采用电感耦合等离子体质谱法。功率为1 300 W,冷却气流量为1.5 L/min,载气流速为0.8 L/min,辅助气流量为0.2 L/min,积分时间为10 s,延迟时间为1 s,重复1次,测量方式为标准曲线法。采用SPSS 16.0统计软件对数据进行主成分分析和相关性分析。结果:铁、镁、钙、铝、钾、钠、锌、钴、镍、钡、锰、磷、硒、钛、锶、铜、砷、镉、铬、铅、汞检测质量浓度线性范围分别为50~250 μg/mL(r=0.997 2)、25~100 μg/mL(r=0.998 9)、25~100 μg/mL(r=0.997 7)、2.5~15 μg/mL(r=0.999 6)、25~150 μg/mL(r=0.999 1)、2.5~15 μg/mL(r=0.999 9)、2.5~10 μg/mL(r=0.999 9)、2.5~10 μg/mL(r=0.999 9)、2.5~10 μg/mL(r=0.999 9)、2.5~10 μg/mL(r=0.999 9)、2.5~10 μg/mL(r=0.999 8)、2.5~10 μg/mL(r=0.999 6)、0.5~2 μg/mL(r=0.999 5)、2.5~10 μg/mL(r=0.999 9)、0.5~2 μg/mL(r=0.998 3)、2.5~10 μg/mL(r=0.999 7)、2.5~10 μg/mL(r=0.999 9)、2.5~10 μg/mL(r=0.999 9)、2.5~10 μg/mL(r=0.999 9)、0.05~0.2 μg/mL(r=0.999 2)、0.05~0.2 μg/mL(r=0.999 7);精密度、稳定性、重复性试验的RSD<5.0%;加样回收率为93.9%~106.9%(RSD为0.22%~2.94%,n均为6)。钾、镁、磷、钙、铝为药材样品中主要的无机元素成分;21种元素中部分元素间有一定的相关性。结论:该方法操作简便,精密度、稳定性、重复性好,可用于地耳草药材中21种无机元素含量的同时测定。
ABSTRACT: OBJECTIVE: To establish the method for simultaneous determination of 21 inorganic elements in Hypericum japonicum. METHODS: ICP-MS method was adopted. The power was 1 300 W; flow rate of cooling gas was 1.5 L/min; flow rate of carrier gas was 0.8 L/min; flow rate of auxiliary gas was 0.2 L/min; integration time was 10 s; delay time of 1 s; repetition times was one time; measurement mode was standard curve method. SPSS 16.0 statistical software was used for relationship analysis and main component analysis. RESULTS: The linear range of iron, magnesium, calcium, aluminum, potassium, sodium, zinc, cobalt, nickel, barium, manganese, phosphorus, selenium, titanium, strontium, copper, arsenic, cadmium, chromium, lead, mercury were 50-250 μg/mL(r=0.997 2), 25-100 μg/mL(r=0.998 9),25-100 μg/mL(r=0.997 7), 2.5-15 μg/mL(r=0.999 6), 25-150 μg/mL(r=0.999 1), 2.5-15 μg/mL(r=0.999 9),2.5-10 μg/mL(r=0.999 9), 2.5-10 μg/mL(r=0.999 9),2.5-10 μg/mL(r=0.999 9),2.5-10 μg/mL(r=0. 0.999 9), 2.5-10 μg/mL(r=0.999 8), 2.5-10 μg/mL(r=0.999 6), 0.5-2 μg/mL(r=0.999 5),2.5-10 μg/mL(r=0.999 9),0.5-2 μg/mL(r=0.998 3),2.5-10 μg/mL(r=0.999 7), 2.5-10 μg/mL(r=0.999 9),2.5-10 μg/mL(r=0.999 9),2.5-10 μg/mL(r=0.999 9),0.05-0.2 μg/mL(r=0.999 2),0.05-0.2 μg/mL(r=0.999 7), respectively. RSDs of precision, stability and reproducibility tests were all lower than 5.0%. The recoveries were 93.9%-106.9%(RSD were 0.22%-2.94%,n=6).CONCLUSIONS: The method is simple, precise, stable and reproducible, and can be used for simultaneous determination of 21 inorganic elements in H. japonicum.
期刊: 2017年第28卷第15期
作者: 马丽娟,韩乐,刘训红,吴启南,傅兴圣,许虎
AUTHORS: MA Lijuan,HAN Le,LIU Xunhong,WU Qinan,FU Xingsheng,XU Hu
关键字: 地耳草;无机元素;电感耦合等离子体质谱法
KEYWORDS: Hypericum japonicum; Inorganic element; ICP-MS
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