GB/T 41525-2022 Translated English of Chinese Standard (GB/T 41525-2022, GBT41525-2022): Determination of migratable chromium(Ⅵ) in toy materials - Ion chromatography
https://www.chinesestandard.net, Sep 9, 2022 - Technology & Engineering - 14 pages
This Document describes the use of ion chromatography to determine the migratable chromium (VI) in toy materials. This Document is applicable to the achievable toy materials: --- Category-1: dry, brittle, powdery or pliable toy materials; --- Category-2: liquid or sticky toy materials; --- Category-3: scratchable toy materials.
1000mL volumetric flask 1mL of solution according Accurately pipette adjust the pH ammonia solution ammonia water 5.3 ammonium chloride solution analysis Appendix applicable appropriate Blank calculated calculated according Calculation of Results Category-1 Category-3 Center Chen China chromatographic conditions Classification Clause Coatings concentration of Cr constant volume Cr Ⅵ Definitions detector determined dilute dissolve Document Drafting exchange column extract Figure A.1 give Guangzhou Instrument conditions Ion chromatograph issuing laboratory least mass concentration mass fraction measurement method mg/kg Migratable Chromium migratable Cr migration solution nitric acid NOTE otherwise paints parameters pH value pipette 1mL play Polymers Preparation quantification limit range Reagents refer Report Safety sample separated similar solid materials solution 5.5 solution contains specified in GB/T specimen solution standard curve standard solution Standard Solution Retention standard stock solution standard working solutions sulfuric acid Table Technical test results textiles Time/s titrate toy materials transfer water specified