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- W2354039281 abstract "Objective:To determine the best cleaning method for microwave digestion tanks.Methods: Five cleaning methods were selected to clean the digestion tank that had been used for different samples(with the chromium concentration of 0.7,2.7,4 and 40 mg·kg-1).Trace chromium in the digestion tanks was analyzed by microwave digestion and graphite furnace atomic absorption spectrometry.Results: The chromium residue in the digested tanks can be cleaned by two cleaning methods as soak for 1 h with hydrochloric acid solution(1→2),soak for 1 h with nitric acid solution(1→2),then wash three times with deionized water and soak for 8-12 h with nitric acid solution(1→5),wash three times with deionized water.Conclusion: The cleaning methods of soak for 1 h with hydrochloric acid solution(1→2),soak for 1 h with nitric acid solution(1→2),then wash three times with deionized water not only can save time but also ensure the accuracy of the post-experimental results,which can be used for microwave digestion tanks cleaning during chromium determination process." @default.
- W2354039281 created "2016-06-24" @default.
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- W2354039281 date "2012-01-01" @default.
- W2354039281 modified "2023-09-25" @default.
- W2354039281 title "Investigation on cleaning methods for chromium residue in microwave digestion tanks" @default.
- W2354039281 hasPublicationYear "2012" @default.
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