Download or read book YS T 1085 2015 Translated English of Chinese Standard YS T 1085 2015 YST1085 2015 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2024-06-02 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: This standard specifies the method for the determination of silicon, manganese, phosphorus, iron, copper, cobalt, magnesium, aluminum, zinc and chromium content in refined nickel by using an inductively coupled plasma atomic emission spectrometric method. This method is applicable to the analysis of silicon, manganese, phosphorus, iron, copper, cobalt, magnesium, aluminum, zinc and chromium content in refined nickel. The measuring range of each element is shown in Table 1. Table 1 -- Measuring range of each element Element Measuring range (mass fraction)/% YS/T 1085-2015 www.ChineseStandard.net ? Buy True-PDF ? Auto-delivery Page 5 of 16 2 Method principle A certain amount of the sample is weighed and decomposed by the nitric acid; an inductively coupled plasma atomic emission spectrometer is used to measure the spectral intensity of the spectral line of the element to be measured in the solution; the spectral line is corrected by subtracting the background to eliminate the influence of the matrix nickel; the elemental content is obtained from the calibration curve drawn according to the standard solution. 3 Reagents Unless otherwise stated, the reagents used in this standard are all of analytical grade, and the water used is first-grade water. 3.1 Nitric acid (¦Ñ=1.42 g/mL). 3.2 Nitric acid (1+1). 3.3 Hydrofluoric acid (¦Ñ=1.15 g/mL). 3.4 Silicon standard stock solution: Heat high-purity silica (the content is greater than 99.9%) at a temperature of 1100 ¡ãC until its mass is constant, and cool to room temperature in a desiccator; weigh 2.1393 g and put it into a platinum crucible, add about 5 g of sodium carbonate, heat and melt for 15 minutes. Take it out and cool it slightly, place it in a 500 mL beaker, dissolve the melt with water, and wash out the platinum crucible; then, transfer the solution into a 1000 mL volumetric flask, wash the beaker with water and pour the washing liquid into the volumetric flask, add water to the scale of the volumetric flask, mix...

Download or read book YS T 231 2015 Translated English of Chinese Standard YST 231 2015 YS T231 2015 YST231 2015 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2016-06-03 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Standard specifies the requirements, test methods, inspection rules, marks, package, transportation, storage, quality certificate and orders (or contracts) for the tungsten concentrate. This Standard applies to tungsten concentrate products selected in mine; it can be used for producing ammonium paratungstate, tungstic acid, ammonium metatungstate, tungsten oxide etc.

Download or read book YS T 298 2015 Translated English of Chinese Standard YST 298 2015 YS T298 2015 YST298 2015 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2019-03-16 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Standard specifies the requirements, test methods, inspection rules, marking, package, transportation, storage, quality certificate, ordering list (or contract) contents of the high titanium slag. This Standard is applicable to the high titanium slag used by titanium tetrachloride, artificial rutile and titanium pigment with titanic iron ore as raw materials, and producing by electric furnace smelting.