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GB/T 21928-2008 (GB/T21928-2008, GBT 21928-2008, GBT21928-2008) & related versions
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GB/T 21928-2008: PDF in English (GBT 21928-2008)
GB/T 21928-2008
GB
ICS 67.040
C 53
NATIONAL STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
Determination of phthalate esters
in food plastic packaging materials
食品塑料包装材料中
ISSUED ON. JUNE 3, 2008
IMPLEMENTED ON. DECEMBER 1, 2008
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration Committee.
Table of Contents
Preface ... 3
1 Scope ... 4
2 Principle ... 4
3 Reagents... 4
4 Instruments ... 5
5 Analysis steps ... 5
6 Calculation results ... 6
7 Precision ... 7
Appendix A ... 8
Appendix B ... 9
Appendix C ... 10
Appendix D ... 11
Preface
Appendixes A, B, C and D are informative.
This standard was proposed by China Standardization Institute.
This standard shall be under the jurisdiction of the National Food Safety Emergency
Standardization Working Group.
Drafting organization of this standard. Beijing Haidian District Product Quality Supervision
and Inspection Institute (National Food Quality Safety Supervision and Inspection Center).
Main drafters of this standard. Li Wei, Chang Yuwen, Zhao Yuqi, Zhou Xiangjuan, Mu
Tongna, Liu Yanqin, and Cao Hong.
Determination of phthalate esters
in food plastic packaging materials
1 Scope
This standard specifies the test method of gas chromatography - mass spectrometry (GC-MS)
of phthalate esters substance-content in food plastic packaging materials.
This standard is applicable to determination of phthalate esters (16 kinds, see Appendix A)
substance-content in food plastic packaging materials.
In this standard, the detection limit of each phthalate esters compounds is 0.05 mg/kg.
2 Principle
After extracted and purified, the food plastic packaging materials is determined by gas
chromatography - mass spectrometry instrument Adopt characteristics of selected ion
monitoring scan mode (SIM). Use abundance of fragment for qualitative determination. And
use standard sample quantitative ion external standard method for quantitative determination.
3 Reagents
Water used in the standard is all-glass re-distilled water. Reagents are chromatographic pure
(or re-distilled analytical pure), stored in glass bottle.
3.1 N-hexane.
3.2 Acetone.
3.3 16 kinds of phthalate esters standard products. dimethyl phthalate (DMP), diethyl
phthalate (DEP), diisobutyl phthalate (DIBP), Dibutyl phthalate (DBP), bis(2-methoxyethyl)
phthalate (DMEP), bis(4-methyl-2-pentyl) phthalate (BMPP), bis(2-ethoxyethyl) phthalate
(DEEP), dipentyl phthalate (DPP), dihexyl phthalate (DHXP), benzyl butyl phthalate (BBP),
bis(2-n-butoxyethyl) phthalate (DBEP), dicyclohexyl phthalate (DCHP), bis(2-ethylhexyl)
phthalate (DEHP), diphenyl phthalate, di-n-octyl phthalate (DNOP), dinonyl phthalate (DNP).
The purity is shown in Appendix B.
3.4 Standard stock solution. Respectively weigh above standard products (accurate to 0.1 mg).
Use n-hexane to prepare 1 000 mg/L of stock solution. Store at 4 °C in refrigerator.
3.5 Standard use solution. Use n-hexane to dilute the standard stock solutions to be standard
series solutions with concentrations of 0.5, 1.0, 2.0, 4.0, 8.0 mg/L respectively. Keep for spare
Appendix D
(Informative)
Gas chromatography - mass spectrometry selected ion chromatograms of
phthalate esters compounds standard substances
Note. The sequence of peaks of 16 kinds of phthalate esters is. dimethyl phthalate (DMP),
diethyl phthalate (DEP), diisobutyl phthalate (DIBP), Dibutyl phthalate (DBP),
bis(2-methoxyethyl) phthalate (DMEP), bis(4-methyl-2-pentyl) phthalate (BMPP),
bis(2-ethoxyethyl) phthalate (DEEP), dipentyl phthalate (DPP), dihexyl phthalate (DHXP),
benzyl butyl phthalate (BBP), bis(2-n-butoxyethyl) phthalate (DBEP), dicyclohexyl phthalate
(DCHP), bis(2-ethylhexyl) phthalate (DEHP), diphenyl phthalate, di-n-octyl phthalate
(DNOP), dinonyl phthalate (DNP).
Figure D.1 Gas chromatography - mass spectrometry selected ion
chromatograms of phthalate esters compounds standard substances
Abundance
......

BASIC DATA
Standard ID GB/T 21928-2008 (GB/T21928-2008)
Description (Translated English) Determination of phthalate esters in food plastic packaging materials
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard C53
Classification of International Standard 67.040
Word Count Estimation 9,927
Date of Issue 2008-06-03
Date of Implementation 2008-12-01
Drafting Organization Haidian District Product Quality Supervision and Inspection (National Food Quality Safety Supervision and Inspection Center)
Administrative Organization National food safety emergency standardization working group
Regulation (derived from) National Standard Approval Announcement 2008 No.9 (Total No.122)
Proposing organization China National Institute of Standardization
Issuing agency(ies) Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China
Summary This standard specifies the food plastic packaging materials esters of phthalic acid content by gas chromatography-mass spectrometry methods. This standard applies to food plastic packaging materials matter content measured phthalate esters. The detection limit of this standard, each phthalate compound is 0. 05 mg/kg.