不同产地野菊花中微量元素含量的测定
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篇名: 不同产地野菊花中微量元素含量的测定
TITLE:
摘要: 目的:建立测定不同产地野菊花中微量元素含量的方法。方法:采用石墨炉原子吸收分光光度法(GFAAS)测定药材中铅(Pb)、镉(Cd)、砷(As)的含量;采用原子冷吸收分光光度法(HGAAS)测定药材中汞(Hg)的含量;采用火焰原子吸收分光光度法(FAAS)测定药材中铜(Cu)、铁(Fe)、锰(Mn)、钙(Ca)、锰(Mg)、锌(Zn)的含量。结果:Pb、Cd、As、Hg、Cu、Fe、Mn、Ca、Mg、Zn检测质量浓度线性范围分别为0~50(r=0.999 9)、0~10(r=0.999 2)、0~50(r=0.999 0)、0~20(r=0.999 5)、0~5(r=0.999 3)、0~15(r=0.999 8)、0~2(r=0.999 9)、0~50(r=1.000 0)、0~20(r=0.999 9)、0~2 μg/L(r=0.999 8);精密度、稳定性、重复性试验的RSD<3%;加样回收率分别为94.25%~97.43%(RSD=1.07%)、94.97%~99.46%(RSD=1.68%)、96.25%~99.46%(RSD=1.09%)、96.61%~99.91%(RSD=1.26%)、94.11%~98.41%(RSD=1.68%)、93.11%~99.59%(RSD=2.73%)、93.11%~99.48%(RSD=2.63%)、93.01%~99.85%(RSD=2.49%)、95.13%~99.75%(RSD=1.58%)、94.08%~97.37%(RSD=1.18%),n均为6。结论:该方法操作简便、稳定、重复性好,可用于不同产地野菊花中微量元素含量的测定。
ABSTRACT: OBJECTIVE:To establish a method for the contents determination of microelements in Chrysanthemum indicum from different production fields. METHODS:Graphite furnace atomic absorption (GFAAS) was used to determine the contents of Pb, Cd and As; HGAAS was used to determination the content of Hg; and FAAS was used to determine the contents of Cu, Fe, Mn, Ca, Mg and Zn. RESULTS: The linear range was 0-50 μg/L for Pb(r=0.999 9), 0-10 μg/L for Cd(r=0.999 2),0-50 μg/L for As (r=0.999 0),0-20 μg/L for Hg(r=0.999 5),0-5 μg/L for Cu(r=0.999 3), 0-15 μg/L for Fe(r=0.999 8),0-2 μg/L for Mn(r=0.999 9),0-50 μg/L for Ca(r=1.000 0),0-20 μg/L for Mg(r=0.999 9) and 0-2 μg/L for Zn(r=0.999 8); RSDs of precision, stability and reroducibility tests were lower than 3%; recoveries were 94.25%~97.43%(RSD=1.07%)、94.97%~99.46%(RSD=1.68%)、96.25%~99.46%(RSD=1.09%,n=6)、96.61%~99.91%(RSD=1.26%,n=6)、94.11%~98.41%(RSD=1.68%,n=6)、93.11%~99.59%(RSD=2.73%,n=6)、93.11%~99.48%(RSD=2.63%,n=6)、93.01%~99.85%(RSD=2.49%,n=6)、95.13%~99.75%(RSD=1.58%,n=6)、94.08%~97.37%(RSD=1.18%,n=6), respectively. CONCLUSIONS:The method is simple, stable and reproducible, and can be used for the contents determination of microelements in C. indicum from different production fields.
期刊: 2016年第27卷第6期
作者: 罗石任,王丽果
AUTHORS: LUO Shiren,WANG Liguo
关键字: 野菊花;微量元素;原子吸收分光光度法;石墨炉原子吸收分光光度法;原子冷吸收分光光度法;火焰原子吸收分光光度法
KEYWORDS: Chrysanthemum indicum; Microelement; Atomic absorption spectrometry; Graphite furnace atomic absorption spectrometry; Atomic cooling absorption spectrometry; Flame atomic absorption spectrometry
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