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The Determination Of Gold In Barren Cyanide Solutions By Atomic Absorption Spectrophotometry
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Book Synopsis The Determination of Gold in Barren Cyanide Solutions by Atomic-absorption Spectrophotometry by :
Download or read book The Determination of Gold in Barren Cyanide Solutions by Atomic-absorption Spectrophotometry written by and published by . This book was released on 1966 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: The method can be applied to solutions containing more than 0.001 ppm of gold. The gold is concentrated by extraction (as aurocyanide) into a 5 % (v/v) solution of alamine 336 in n-butyl acetate. A single extraction is sufficient to recover the gold quantitatively and to increase its concentration by a factor of a hundred. The absorption of the gold is measured in the organic phase, and the sensitivity obtained is approximately three times that in the aqueous solution. To prevent the formation of a precipitate in the organic phase, EDTA is added. A complete determination takes approximately 1 1/2 hours. Coefficients of variation of about 2 per cent were obtained, and the limit of detection, based on an absorption of 1 per cent (without scale expansion), is 0.001 ppm (0.00058 dwt/ton) of gold.
Book Synopsis The Determination of Small Amounts of Gold in Barren Cyanide Solutions by Atomic-absorption Spectrophotometry. Laboratory Method No 79-4 by :
Download or read book The Determination of Small Amounts of Gold in Barren Cyanide Solutions by Atomic-absorption Spectrophotometry. Laboratory Method No 79-4 written by and published by . This book was released on 1966 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: An aliquot portion of the sample is extracted by a measured amount of 5 per cent alamine 336 in n-butyl acetate. The extracted gold is determined by atomic absorption in the organic phase.
Book Synopsis Determination of Gold (1) in Cyanide Solutions by Solvent Extraction and Atomic Absorption Spectrometry by :
Download or read book Determination of Gold (1) in Cyanide Solutions by Solvent Extraction and Atomic Absorption Spectrometry written by and published by . This book was released on 1969 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Standard Test Method for Determination of Gold in Cyanide Solutions by Atomic Absorption Spectrometry by :
Download or read book Standard Test Method for Determination of Gold in Cyanide Solutions by Atomic Absorption Spectrometry written by and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Determination of gold in cyanide waste solutions by solvent extraction and atomic absorption spectrometry by : F. W. E. Strelow
Download or read book Determination of gold in cyanide waste solutions by solvent extraction and atomic absorption spectrometry written by F. W. E. Strelow and published by . This book was released on 1966 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Determination of Gold in Cyanide Solutions by the Atomic Absorption Method by :
Download or read book The Determination of Gold in Cyanide Solutions by the Atomic Absorption Method written by and published by . This book was released on 1964 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of an analytical method, capable of determining 0.01 ppm of gold in solution, is described. Solvent extraction with alamine 336, is used to concentrate dilute solutions and to obviate interference from zinc. A coefficient of variation of 4.4 per cent was obtained for a synthetic solution containing 0.25 ppm gold.
Book Synopsis Laboratory Method No 79-12. The Determination of Gold in Cyanide Solutions by Atomic-absorption Spectrophotometry by :
Download or read book Laboratory Method No 79-12. The Determination of Gold in Cyanide Solutions by Atomic-absorption Spectrophotometry written by and published by . This book was released on 1980 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gold, when present in cyanide solutions at concentrations below 5 ug/ml, is extracted with Aliquat 336 in diisobutyl ketone, and is measured by atomic-absorption spectrophotometry. For concentrations higher than 5 ug/ml, the gold is measured direct on an acidified portion of the sample.
Book Synopsis A Review of the Determination of Gold in Solutions and in Solids by Solvent Extraction and Atomic Absorption Spectrometry by :
Download or read book A Review of the Determination of Gold in Solutions and in Solids by Solvent Extraction and Atomic Absorption Spectrometry written by and published by . This book was released on 1969 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Determination of Gold in Geologic Materials by Solvent Extraction and Atomic-absorption Spectrometry by : Claude Huffman
Download or read book Determination of Gold in Geologic Materials by Solvent Extraction and Atomic-absorption Spectrometry written by Claude Huffman and published by . This book was released on 1967 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Determination of Gold by Atomic Absorption, and of Platinum, Palladium, Rhodium, and Iridium by Spectrophotometry, in Solutions by : E. W. Fowler
Download or read book The Determination of Gold by Atomic Absorption, and of Platinum, Palladium, Rhodium, and Iridium by Spectrophotometry, in Solutions written by E. W. Fowler and published by . This book was released on 1970 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Determination of Gold by Atomic Absorption and of Platinum, Palladium, Phodium and Iridium by Spectrophotometry, in Solutions by : E. W. Fowler
Download or read book The Determination of Gold by Atomic Absorption and of Platinum, Palladium, Phodium and Iridium by Spectrophotometry, in Solutions written by E. W. Fowler and published by . This book was released on 1970 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Trace Gold Determination in Cyanide Process Solutions : Preconcentration Using Supported Liquid Membranes in a Flow-injection Manifold by :
Download or read book Trace Gold Determination in Cyanide Process Solutions : Preconcentration Using Supported Liquid Membranes in a Flow-injection Manifold written by and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A method for the determination of trace levels of gold in cyanide process solutions has been developed. Preconcentration of the aurocyanide anion is achieved by extraction into a supported liquid membrane (SLM), formed by the in situ coating of a thin layer of organic phase onto a polymeric support. This support is packed into a microcolumn, which forms part of a flow injection manifold. After the sample solution has flowed over the organic phase for a suitable period, the entire organic phase is washed off the column with an organic solvent and introduced into the flame of a conventional atomic absorption spectrophotometer. The method allows gold to be determined in the range of 0,01 to 0,1 mg/l with a Sr of 0,027 at the 0,04 mg/l level. With an analysis time of 150 seconds per sample, a detection limit of 0,005 mg/l was achieved with a sampling frequency of 24/h.
Book Synopsis Spectrophotometric Determination of Gold in Cyanide Solutions After Solvent Extraction as the Bromo-Aurate Complex by :
Download or read book Spectrophotometric Determination of Gold in Cyanide Solutions After Solvent Extraction as the Bromo-Aurate Complex written by and published by . This book was released on 1966 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: A rapid spectrophotometric method for determining gold in cyanide solutions is presented. Cyanide is decomposed by evaporating the sample with hydrobromic acid. The bromo-aurate complex is then formed in the presence of trioctylphosphine oxide, extracted into chloroform, and the colour measured spectrophotometrically.
Book Synopsis Determination of Gold and Silver in Cyanide Solutions by : Leroy Edward Smith
Download or read book Determination of Gold and Silver in Cyanide Solutions written by Leroy Edward Smith and published by . This book was released on 1937 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Determination, by Atomic-absorption Spectrophotometry, of Gold in Cupellation Prills and in Platinum-metal Concentrates. Laboratory Method No 79-7 by :
Download or read book The Determination, by Atomic-absorption Spectrophotometry, of Gold in Cupellation Prills and in Platinum-metal Concentrates. Laboratory Method No 79-7 written by and published by . This book was released on 1970 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gold in prills obtained by the lead-collection technique is determined after the prills have been dissolved in aqua regia and the gold has been extracted from the resulting solutions with dibutyl 'Carbitol'. The extraction is carried out from solutions in which the concentration of hydrochloric acid is not less than 4 molar. The extracted gold is diluted to volume with ethanol and is then determined by atomic-absorption spectrophotometry.
Book Synopsis Unrestricted Mintek Publications by :
Download or read book Unrestricted Mintek Publications written by and published by . This book was released on 1966 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preprint written by and published by . This book was released on with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
