GB 31604.24-2016: Translated English of Chinese Standard. GB31604.24-2016: National Food Safety Standard -- Food Contact Materials and Articles - Determination of cadmium migration quantity
https://www.chinesestandard.net, 2017 M04 29 - 12 pages
This standard specifies the determination of cadmium migration quantity after immersion of food contact materials and articles in food simulants by graphite furnace atomic absorption spectrometry, inductively coupled plasma mass spectrometry, inductively coupled plasma emission spectroscopy, and flame atomic absorption spectrometry.
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1000 mL volumetric abscissa acid solution 1+9 acid solution 5+95 add appropriate amount ammonium dihydrogen phosphate amount of nitric analysis of hygienic Analytical balance arithmetic mean atomic absorption spectrometer cadmium content cadmium migration quantity Cadmium standard intermediate cadmium standard series Cadmium standard stock concentration from low concentration of cadmium coupled plasma emission Determination of cadmium dihydrogen phosphate solution flame atomic absorption food contact materials furnace atomic absorption graphite furnace atomic hollow cathode lamp hygienic standard inductively coupled plasma Instrument reference conditions materials and articles Method for analysis MIX it uniformly mL of cadmium mL of nitric mL of water mL volumetric flask nitric acid solution OBTAIN the cadmium phosphate solution 20 PIPETTE 0 mL plasma mass spectrometry program for graphite provisions of GB Reagents Reference temperature raising Respectively PIPETTE series for quantitation SN/T solution 1+9 solution 20 g/L standard curve standard intermediate 100 standard series solution standard stock solution temperature raising program