GB/T 10574.11-2017 Translated English of Chinese Standard. (GBT 10574.11-2017, GB/T10574.11-2017, GBT10574.11-2017): Methods for Chemical Analysis of Tin-Lead Solders - Part 11: Determination of Phosphorus Content - Crystal Violet Phosphorus- Vanadium-Molybdenum Heteropoly Acid Spectrophotometryhttps://www.chinesestandard.net, 30 mar 2018 - 10 pagine This Part of GB/T 10574 specifies the determination of phosphorus content in the tin-lead solders. This Part is applicable to the determination of phosphorus content in the tin-lead solders. The measurement range is 0.0005% ~ 0.0100%. This Part belongs to the arbitration analysis method. |
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1.2mL of sulfuric 1000mL volumetric flask 100mL volumetric 1µg of phosphorus 250mL beaker 26mL of ammonium 4.14 Phosphorus standard 4.5 Sulfuric acid 40g of ammonium 5.00mL of phosphorus 5mL of hydrochloric Add water Ammonium metavanadate solution Ammonium molybdate solution Analytical Results calculated by phosphorus contains 100µg cool Crystal violet solution dilute with water distillation purified hydrobromic evaporate till sulfuric filter paper hydrobromic acid hydrochloric acid 4.1 Hydrochloric acid-hydrobromic acid hydroxide solution 200g/L linear interpolation mix evenly Molybdenum-ammonium vanadate mixture Nitric acid Phosphorus mass fraction Phosphorus standard solution Phosphorus standard stock polyethylene bottle Polyvinyl alcohol potassium dihydrogen phosphate repeatability limit reproducibility limit scale sodium chloride Sodium hydroxide Sodium hydroxide solution solution 5g/L solution contains 1µg spectrophotometer standard stock solution sulfuric acid 4.4 sulfuric acid smokes Sulfuric acid solution Take phosphorus quantity Test Materials Quantity test results till sulfuric acid transfer into 1000mL vanadate mixture 4.10 violet solution 0.5g/L water to 1000mL