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| Determination of the Multi-trace Elements in the Shale by ICP-AES with Pressurized Decomposition-Hydrochloric Acid Extraction |
| Received:January 22, 2014 Revised:May 26, 2014 |
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| DOI： |
| KeyWord:geological;shale;trace elements;multi-elements determination;ICP-AES |
| Author | Institution |
| sun you bao |
岛津企业管理（中国）有限公司 |
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| Abstract: |
| This paper using the high pressure digestion vessel for samples pre-treatment, and utilizing Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES) for determination the multielements in the Shale reference material. Optimal conditions were determinate and the best spectral lines were selected. The quantitation values matched the certified value of GBW0707. The experimental results show that, good linear relationship with linear correlation coefficient r>0.9998. The detection limits of these ten elements are low, the precision of RSD less than 3%, The Shimadzu ICPE-9000 used for measurement is equipped with an Echelle spectrometer and CCD detector, making it possible to conduct simultaneous analysis of all elements at all wavelengths, thereby permitting high throughput measurement even for multiple analytes. Further, compared to the conventional torch, the mini torch offers lower consumption of argon gas, thereby reducing running costs. In ICP, the optimal wavelength varies depending on the elements and concentrations in the sample matrix, but with the ICPE-9000, the optimal wavelength is automatically selected for each sample. The method has the advantage of providing a simple,simultaneous determination of multiple elements,along with having a wide linearity range and low detection limit,which can be widely used in geological shale samples. |
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