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- W2736200074 abstract "In this work, a reliable method based on CH4-Ar mixed gas plasma DRC-ICP-MS was developed for direct determination of trace Ge in river samples. The interfering polyatomic ions 36Ar2+, 56Fe16O+, 40Ar32S+, 40Ar16O2+, 55Mn16OH+ on 72Ge+ determination could be reduced by 68% using the DRC with CH4 as the reaction gas. In addition, the CH4 gas was introduced to the ICP plasma at 2 mL min−1, the signal intensity of 72Ge+ was increased by a factor of 3.3 and the background signal (at m/z 72) was decreased to 29.4%. The method’s signal to background ratio (SBR) was improved 11-fold (from 5 to 55). Under the optimized conditions, the limit of quantification (LOQ) was 0.012 μg L−1, and the reproducibility (RSD) was generally less than 3%. The proposed method was applied for the determination of trace Ge in river samples, and the spiked recoveries was in the range of 95.0%–112%. The accuracy of determination results of proposed method was validated by that of standard addition method, and the determination results of two methods were in good agreement." @default.
- W2736200074 created "2017-07-21" @default.
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- W2736200074 date "2017-10-01" @default.
- W2736200074 modified "2023-10-16" @default.
- W2736200074 title "Direct determination of trace germanium in river samples by CH4-Ar mixed gas plasma DRC-ICP-MS" @default.
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- W2736200074 doi "https://doi.org/10.1016/j.ijms.2017.07.010" @default.
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