Gas chromatographic analysis of metals

Chia Nan University of Pharmacy & Science Institutional Repository > 藥理學院 > 2008第五屆海峽化學、生物及材料研討會 > Item 310902800/30493

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標題:	Gas chromatographic analysis of metals
作者:	Chen-Wen Whang(黃承文)
貢獻者:	Department of Chemistry,Tunghai University
關鍵字:	Gas chromatography flame photometric detection solid-phase micro-extracion liquid-phase microextraction dialkyltins chromium aluminum
日期:	2008-07
上傳時間:	2017-12-04 15:55:46 (UTC+8)
摘要:	Metal analysis has conventionally been carried out with atomic absorption spectrometry (AAS), inductively-coupled plasma (ICP)-atomic emission spectrometry (AES) or ICP-mass spectrometry (MS). Despite their high sensitivity and wide popularity, these methods generally lack the capablilty of providing direct speciation results of metal elements. For speciation analysis, liquid chromatographic and capillary electrophoretic techniques are often employed to separate the various metal species prior to AAS or ICP-MS detection. Alternatively, gas chromatography (GC) can be a simple and efficient technique for speciation provided that volatile metal chelates were formed in advance. The commonly used chelating agents for volatility-enhancing purpose include tetraethylborate and trifuoroacethyacetonate.GC methods for volatile diethyl dialkyltins, Cr- and Al- trifluoroacetylacetonates have been successfully developed. Element specific detection was performed with either a flame photometric detector (FPD) or a MS detector. Coupled with solid-phase microextraction (SPME) or liquid-phase microextraction (LPME) technique, concentration limits of detection for Sn, Cr and Al were in the sub-ppb level. With the aid of microwave heating and on-fiber derivatization/SPME extraction, the analysis time of Cr in aqueous solution was less than 10 min.
關聯:	第五屆海峽化學、生物及材料研討會，起迄日：2008/07/21-2008/07/22，地點：嘉南藥理科技大學
顯示於類別:	[藥理學院] 2008第五屆海峽化學、生物及材料研討會

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