Standard No.:	GB/T 5009.101-2003
Chinese Name:	食品容器及包装材料用聚酯树脂及其成型品中锑的测定
English Name:	Determination of antimony in polyester resin and products for food containers and packaging materials
Professional Classification:	C53 Food sanitation
Professional Classification:	GB National Standard
ICS Classification:	67.040
Issued by:
Issued on:	2003-08-11
Implemented on:	2004-01-01
Status:	ABOLISHED
Replace By:	GB31604.41-2016
Replace By Date:
Language:	English
File Format:	PDF
Word Count:	3000 words
Price(USD):	90 (USD)
Delivery:	via email in 1-3 business day

1 Scope

This standard specifies determination methods of antimony in polyester resin and products for food containers and packaging materials — graphite furnace atomic absorption spectrometry and malachite green spectrophotometric method.
This standard is applicable to the determination of antimony in thermoplastic polyester resin and products. It also applicable to the determination of antimony in food enamels and containers.
Detection limit of Method II "Malachite Green Spectrophotometric Method" in this standard is 0.02 μ/mL.

Method I Graphite Furnace Atomic Absorption Spectrometry

2 Principle

Tervalent antimony reduced by potassium iodide will complex with 1-Pyrrolidinecarbodithioic acid (APDC) in the hydrochloric acid medium, it can be determined by graphite furnace atomic absorption spectrophotometer after extracted with 4-Methyl-2-pentanone (methyl isobutyl ketone, MIBK).