YS/T 928.3-2013 English PDF (YST928.3-2013)

This Part of YS/T 928 specifies the method for the determination of nickel, cobalt and manganese content in nickel cobalt manganese composite hydrogenoxide. This Part is applicable to the determination of nickel, cobalt and manganese content in nickel cobalt manganese composite hydrogenoxide. See Table 1 for the determination scope. Table 1 -- Determination Scope 2 Method Summary Use hydrochloric acid to dissolve the test portion, use yttrium as the internal standard, and adopt an inductively coupled plasma atomic emission spectrometer to determine the elements to be analyzed. 3 Reagents Unless it is otherwise stated, only reagents confirmed to be analytically pure and pure water with an electrical resistivity of not less than 18.2 M? ? cm shall be used in the analysis. 3.1 Hydrochloric acid (¦Ñ = 1.19 g/mL). 3.2 Nitric acid (¦Ñ = 1.42 g/mL). 3.3 Hydrochloric acid (1 + 1). 3.4 Nitric acid (1 + 1). Element Determination Scope/% YS/T 928.3-2013 www.ChineseStandard.net ? Buy True-PDF ? Auto-delivery. Page 5 of 9 3.5 Yttrium internal standard solution A (0.2 g/L): weigh-take 0.254 g of yttrium trioxide (wY2O3 ? 99.99%) in a 300 mL beaker, add 20 mL of hydrochloric acid (3.1), heat to dissolve it, then, cool it. Transfer it to a 1,000 mL volumetric flask; use water to dilute to the scale and mix it well. 3.6 Yttrium internal standard solution B (2.00 ?g/mL): divide-take 2.00 mL of yttrium internal standard solution A (3.5), transfer it into a 200 mL volumetric flask; use water to dilute to the scale and mix it well. 3.7 Nickel standard stock solution: weigh-take 2.0000 g of pure nickel (wNi ? 99.99%) in a 300 mL beaker, add 40 mL of hydrochloric acid (3.1) and 5 mL of nitric acid (3.2); heat to disso