【摘要】：目的采用電感耦合等離子體質(zhì)譜(ICP-MS)法測定天麻中As、Ba、Be、Cd、Co、Cr、Cu、Ga、Hg、Mg、Mn、Mo、Ni、Pb、Se、Sn、Sr、Ti、Tl、V 20種元素的量。方法采用濃硝酸與雙氧水作為混合溶劑,結(jié)合微波消解處理天麻樣品。經(jīng)過儀器工作條件的優(yōu)化,進行了方法學(xué)考察,并測定了30批不同產(chǎn)地天麻樣品中20種元素的量。結(jié)果 20種待測元素的線性關(guān)系良好(r≥0.998 2),重復(fù)性試驗RSD均≤6.34%,穩(wěn)定性試驗RSD均≤6.00%,精密度試驗RSD均≤5.78%,加樣回收率在91.62%~108.10%,RSD均≤5.21%。結(jié)論該方法具有前處理簡便、多種元素同時測定、分析速度快、靈敏度高、準(zhǔn)確度高、精密度好等優(yōu)點,可為天麻中元素的快速分析以及藥材質(zhì)量評價提供技術(shù)支持和科學(xué)依據(jù)。
[Abstract]:Objective to determine 20 elements of As,Ba,Be,Cd,Co,Cr,Cu,Ga,Hg,Mg,Mn,Mo,Ni,Pb,Se,Sn,Sr,Ti,Tl,V in Gastrodia elata by inductively coupled plasma mass spectrometry (ICP-MS). Methods Gastrodia elata samples were treated with concentrated nitric acid and hydrogen peroxide as mixed solvent and microwave digestion. Through the optimization of the working conditions of the instrument, the methodology was investigated and the contents of 20 elements in 30 batches of Gastrodia elata samples from different habitats were determined. Results the linear relationship of the 20 elements to be tested was good (r 鈮，

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