FAAS Determination of Trace Elements in Various Positions of Plants of Salvia Miltiorrhiza Grown in Zhong-jiang County
摘 要
用火焰原子吸收光谱法测定了丹参根、茎、叶中微量元素钙、镁、钾、铜、锌、锰、铬、钴、镍、铁、鉛和镉的含量.经粉碎并通过孔径为0.30 mm样筛的样品,用硝酸-过氧化氢混合溶液消解处理后,经高氯酸冒烟.溶液中加入浓硝酸,并稀释至100 mL(于容量瓶中)后,供火焰原子吸收光谱法测定.对方法的回收率及精密度作了试验,回收率为95.2 %~105.3%,相对标准偏差(n=9)均小于3.0%.丹参植株中12种微量元素的总含量(μg·g-1)由高到低顺序为:叶>茎>根.其中人体必需的微量元素锌、铁、锰、铜及有害元素铅和镉也均有显著的存在量.
Abstract
Twelve trace elements,including Ca,Mg,K,Cu,Zn,Mn,Cr,Co,Ni,Fe,Pb and Cd,in various positions,i.e.roots,stems and leaves,of plants of Salvia Miltiorrhiza,were determined by FAAS.The powdered sample (to pass through screen with bore diameter of 0.30 mm) was digested with HNO3-H2O2 mixed solution and fumed with HClO4.The solution was taken up with conc.HNO3 and used for FAAS determination after diluting to 100 mL in a volumetric flask.Recovery and precision of the method were tested giving results of recovery in the range of 95.2% to 105.3% and values of RSD′s (n=9) less than 3%.As shown by the analytical results,magnitude of total amounts of the 12 elements in various positions of the plants was in the following order: leaves>stems>roots,and both the essential elements (Zn,Fe,Mn and Cu) and harmful elements (Pb and Cd) were found in significant amounts.
中图分类号 O657.31
所属栏目 工作简报
基金项目 四川省教育厅自然科学项目(09ZC019);绵阳市科技局重点项目(09Y001-1;08Y002-3)
收稿日期 2009/9/20
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备注杨振萍(1960-),女,江苏南京人,副教授,主要从事光谱分析教学与研究.
引用该论文: YANG Zhen-ping,BIAN Qing-quan,LUO Ying,WANG Xiu-feng,HUAN Bao-mei. FAAS Determination of Trace Elements in Various Positions of Plants of Salvia Miltiorrhiza Grown in Zhong-jiang County[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2010, 46(6): 621~623
杨振萍,边清泉,罗英,王秀峰,黄宝美. 火焰原子吸收光谱法测定中江丹参植株不同部位12种微量元素含量[J]. 理化检验-化学分册, 2010, 46(6): 621~623
被引情况:
【1】孙瑞霞,冯霄,李怡帆,张一敏,薛载坤,孙剑辉, "火焰原子吸收光谱法测定四大怀药中10种元素",理化检验-化学分册 47, 681-683(2011)
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【6】付志红,谢明勇,章志明,等.ICP-AES法测定车前子中无机元素[J].光谱学与光谱分析,2004,24(6):737-740.
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【8】张举成,刘卫,易中周,等.红河州不同地区野山茶中微量元素的对比研究[J].光谱学与光谱分析,2008,28(11):237-240.
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