GB/T 38287-2019: Determination of hexavalent chromium in plastic materials

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Scope

This Standard specifies the method to determine the content of hexavalent
chromium [Cr(VI)] in plastic materials by diphenyl carbazide spectrophotometry
and liquid chromatography-inductively coupled plasma mass spectrometry.
This Standard is applicable to determination of hexavalent chromium in various
plastic raw materials and products.
NOTE: Diphenyl carbazide spectrophotometry: determination of yellow interference when
iron content is about 50 times that of hexavalent chromium; color interference is generated
when vanadium content is about 10 times that of hexavalent chromium but the color
developed by vanadium and reagent shall disappear after 10min; molybdenum and
mercury above 200mg/L interfere with the determination of hexavalent chromium.

Basic Data

Standard ID	GB/T 38287-2019 (GB/T38287-2019)
Description (Translated English)	Determination of hexavalent chromium in plastic materials
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	G31
Classification of International Standard	83.080.01
Word Count Estimation	10,171
Date of Issue	2019-12-10
Date of Implementation	2020-11-01
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration