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微波消解-原子吸收光譜法測定不同產地淡竹葉中微量元素的含量
摘要：利用微波消解技術處理樣品,采用原子吸收光譜法測定了我國廣東、湖北、湖南、重慶、廣西、江蘇、福建、浙江、安徽九個不同產區淡竹葉中Zn,Fe,Cu,Mn,K,Ca,Mg,Ni,Cd,Pb,Cr,Co,Al,Se,As 15種微量元素的含量.該方法的相對標準偏差(RSD)在1.23%～3.32%之間,平均回收率在95.8%～104.2%之間.研究表明,該方法簡便、快速、靈敏,適合于淡竹葉中微昔元素的測定.試驗分析結果表明,不同產地淡竹葉中微量元素的含量呈現地域性差異.各地區的淡竹葉中對人體有益的元素K,Mg,Ca,Fe,Mn含量普遍較豐富;對人體有害的重金屬元素,除湖南產的淡竹葉中Pb的含量稍高,廣東、安徽產的淡竹葉中Cu的含量偏高外,其他產區的淡竹葉中有害重金屬元素Cd,Cu,Cr,Pb,As的含量均低于、及的限量標準.該測定結果為進一步探討淡竹葉中微量元素的含量與其功效的相關性提供了科學依據.Abstract：A method of microwave digestion technique was proposed to determine the content of Zn,Fe,Cu,Mn,K,Ca,Mg,Ni,CA,Pb,Cr,Co,Al,Se and As in lophatherurn gracile brongn of different habitat by atomic absorption spectroscopy.The RSD of the method was between 1.23% and 3.32%,and the recovery rates obtained by standard addition method were between 95.8% and 104.2%.The results of the study indicate that the proposed method has the advantages of simplicity,speediness and sensitivity.It is suitable for the determination of the contents of metal elements in lophatherum gracile brongn.The experimental results alto indicated that different areas lophantherum gracile brongn had different trace elements content.The content of trace elements K,Mg,Ca,Fe and Mn beneficial to the human body was rich.The content of the heavy metal trace element Pb in lophanlherum gracile brongn of Hunan province was slightly high.The content of the heavy metal trace element Cu in lophantherum gracile brongn of Guangdong province and Anhui province is also slightly higher.Beside,the contents of harmful trace heavy metal elements Cd,Cu,Cr,Pb and As in lophatherum gracile brongn of different habitat are all lower than the limits of Chinese Pharmacopoeia and Green Trade Standard for Importing and Exporting Medicinal Plant and Preparation and National Food Sanitation Standard.These determination results provided the scientific data for further discussing the relationship between the content of trace elements in lophantherum gracile brongn and the medicine efficacy. 作者： 袁珂[1]薛月芹[1]桂仁意[1]孫素琴[2]殷明文[3] Author： YUAN Ke[1] XUE Yue-qin[1] GUI Ren-yi[1] SUN Su-qin[2] YIN Ming-wen[3] 作者單位： 浙江林學院天然藥物研發中心,浙江,臨安,311300清華大學化學系,北京,100084鄭州大學化學系,河南,鄭州,450052 期 刊： 光譜學與光譜分析 ISTICEISCIPKU Journal： SPECTROSCOPY AND SPECTRAL ANALYSIS 年，卷(期)： 2010, 30(3) 分類號： Q657.3 關鍵詞： 微波消解 原子吸收光譜法 淡竹葉 微量元素 Keywords： Microwave digestion Atomic absorption spectrometry method Lophatherum gracile Trace elements 機標分類號： O65 R92 機標關鍵詞： 微波消解 原子吸收 光譜法測定 不同產地 淡竹葉 中微量元素 含量 Absorption Spectroscopy Microwave Different trace elements different heavy metal elements results 有害重金屬元素 Guangdong province atomic absorption determination of Hunan province Anhui province 基金項目： 國家自然科學基金，浙江省森林培育重中之重學科開放基金【微波消解-原子吸收光譜法測定不同產地淡竹葉中微量元素的含量】相關文章：
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