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- W2033145118 abstract "An atomic-absorption method for determination of tungsten in rocks and minerals is proposed. The method involves sample decomposition by acid digestion or by pyrosulphate fusion, followed by chelate extraction of tungsten by N-benzoylphenylhydroxylamine in toluene. Atomic-absorption measurements are made on the organic phase aspirated into a nitrous oxide-acetylene flame. Quantitative extraction with efficient separation from other elements is achieved in a single extraction from strong acid media. The method is rapid and reliable in terms of precision and accuracy and is applicable to rocks and minerals containing tungsten in the range from 100 ppm to 15%." @default.
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- W2033145118 date "1986-03-01" @default.
- W2033145118 modified "2023-10-14" @default.
- W2033145118 title "Determination of tungsten in rocks and minerals by chelate extraction and atomic-absorption spectrometry" @default.
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- W2033145118 doi "https://doi.org/10.1016/0039-9140(86)80064-9" @default.
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