کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10279770 | 465430 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Colorimetric determination of common industrial frothers
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Methylisobutyl carbinol (MIBC) and a methoxy polypropylene glycol (Dowfroth 250) were determined by a colorimetric procedure using salicylaldehyde. Linear calibration curves in absorption spectrophotometry were obtained for MIBC between 0.05 and 0.2Â mg/sample at â¼520Â nm, and for D250 between 0.2 and 0.5Â mg/sample at â¼535Â nm. When standards and sample are run side by side under identical conditions, errors of approximately 3.5% and 6.0% in the determination of CMIBC and CD250 are achieved, respectively. The analysis is unaffected by the presence of sodium isopropyl xanthate, Ca, and Cu at typical plant concentrations in the sample. The colorimetric reactivity is demonstrated for a series of common frothers with alcoholic behavior. The method combines the ease of determination with high sensitivity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Minerals Engineering - Volume 18, Issue 2, February 2005, Pages 263-266
Journal: Minerals Engineering - Volume 18, Issue 2, February 2005, Pages 263-266
نویسندگان
S. Gélinas, J.A. Finch,