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- W2380679599 abstract "High copper content in alloys determined by bis-cyclohexanone oxalydihydrazone spectrophotometric method rapidly was studied in this paper and the optimum chromogenic conditions were discussed.Copper and BCO form a blue complex in ammonia-ammonium chloride buffer solution at pH 8.5-10.0.The maximum absorption wavelength was 600 nm.The concentration of BCO was 0.1 g/L.The coloration temperature was 20 ℃.The coloration time was 10 min.The dosage of ammonium citrate was 1 mL.Beer's law was obeyed in the range of 0.4-4.0 μg/mL for copper.And the apparent molar absorptivity(e) was 1.6×104 L·mol-1·cm-1.This method was applied to determine high content copper in high temperature alloy and copper alloy CRMs.Its relative error was smaller than 1% and the RSD was less than 6.5%." @default.
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- W2380679599 date "2013-01-01" @default.
- W2380679599 modified "2023-09-23" @default.
- W2380679599 title "Determination of high content copper in alloys by bis-cyclohexanone oxalydihydrazone spectrophotometric method" @default.
- W2380679599 hasPublicationYear "2013" @default.
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