Analysis of liquid samples using dried-droplet laser ablation inductively coupled plasma mass spectrometry

Trong Mui Do, Hui Fang Hsieh, Wei Ciang Chang, E. E. Chang, Chu Fang Wang

研究成果: 雜誌貢獻文章同行評審

19 引文 斯高帕斯(Scopus)

摘要

In this study we developed a dried-droplet method for laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). The proposed method provides accurate and precise results when building calibration curves and determining elements of interest in real liquid samples. After placing just 1 μL of a liquid standard solution or a real sample onto the filter surface and then converting the solution into a very small, thin dry spot, the sample could be applied as an analytical subject for LA. To demonstrate the feasibility of this proposed method, we used LA-ICP-MS and conventional ICP-MS to determine the levels of 13 elements (Li, V, Mn, Co, Ni, Cu, Zn, As, Mo, Cd, Sb, Tl, and Pb) in five water samples. The correlation coefficients obtained from the various calibration curves ranged from 0.9920 (205Tl) to 0.9998 ( 51V), sufficient to allow the determination of a wide range of elements in the samples. We also investigated the effects of Methylene Blue (MB) and the NaCl concentration on the elemental analyses. MB could be used as an indicator during the ablation process; its presence in the samples only negligibly influenced the intensities of the signals of most of the tested elements. Notably, high NaCl contents led to signal suppression for some of the elements. In comparison with the established sample introduction by nebulization, our developed technique abrogates the need for time-consuming sample preparation and reduces the possibility of sample contamination.
原文英語
頁(從 - 到)610-618
頁數9
期刊Spectrochimica Acta, Part B: Atomic Spectroscopy
66
發行號8
DOIs
出版狀態已發佈 - 八月 2011

ASJC Scopus subject areas

  • 儀器
  • 原子與分子物理與光學
  • 分析化學
  • 光譜

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