Manual of Procedure for Chemical and Instrumental ... - IBM

nickel ores 55 copper, lead, zinc (polymetallic ores) 58 pyrites 59 rock phosphate and apatite 60 selenium and tellurium 62 silica 64 tin ore 65 ... 6.12 determination of sulphide in water & waste water 219 6.13 analysis of silica in water and waste water 221 . 6.14 analysis of phosphorous in water and waste water 224

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MINES AND MINERALS (DEVELOPMENT AND …

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LIST OF AMENDING ACTS 1. The Mines and Minerals (Regulation and Development) Amendment Act, 1958 (15 of 1958) 2. The Repealing and Amending Act, 1960 (58 of …

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CDF Technical Memo

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Hydrogen Sulphide A A A A Hydroquinone A A A A Hypochlorous Acid conc. A A A A Inks* A A A A lodine+ in Kl sol’n B C B - Isopropyl Alcohol 100% - - - - ... Nickel Chloride conc A A A A Nickel Nitrate sat’d A A A A Nickel Sulphate conc A A A A Nicotine* dilute A A A A Nitric Acid 0-30% A A A A

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UNIT 4 METAL COATING PROCESSES Metal Coating …

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formation of an oxide/sulphide layer. To avoid this a layer of some barrier metal like nickel is applied before gold plating on the substrate of copper as nickel atoms do not defuse to good. Some metal may also be gold plated to improve their aesthetic value for ornamental purpose. Chrome Plating

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Ammonium sulphide 硫酸水素アンモニウム ... Nickel diarsenide アルシニジンクロム(III) Dichromium arsenide

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