GB/T 5009.74-2003 in English

SUPERSEDED

Method for limit test of heavy metals in food additives

Issued on:2003-08-11
Implemented on:2004-01-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $40.00
$39.00

Standard No:	GB/T 5009.74-2003
Document status:	SUPERSEDED
Superseded by:	GB 5009.74-2014 National Food Safety Standard-Method for limit test of heavy metals in food additives
Superseded on:	2016-03-22
Title in English:	Method for limit test of heavy metals in food additives
Title in Chinese:	食品添加剂中重金属限量试验
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2003-08-11
Implemented on:	2004-01-01
Superseding:	GB/T 8451-1987 Method for limit test of heavy metals in food additives
ICS Classification:	67.040-food products in general
Chinese Classification:	C65-Labor safety technology in general
Professional Classification:	GB-National Standard
Related Keywords:	food additives method limit test food additives heavy metals test sample
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《GB/T 5009.74-2003食品添加剂中重金属限量试验》由361（国家卫生健康委员会）归口，主管部门为国家卫生健康委员会。
本标准规定了食品添加剂中重金属的限量试验方法。本标准适用于食品添加剂中重金属的限量试验。

Method for Limit Test of Heavy Metals in Food Additives

1 Scope
This standard specifies the method for limit test of heavy metals in food additives.
This standard is applicable to the limit test of heavy metals in food additives.
2 Principle
In the presence of weak acid (pH 3~4), heavy metal ion in the test sample will act with hydrogen sulfide to generate a substance in brownish black, which is compared to the lead standard solution experiencing the same treatment for limit test.
3 Reagents
3.1 Nitric acid.
3.2 Sulfuric acid.
3.3 Hydrochloric acid.
3.3.1 6 mol/L hydrochloric acid: measure 50mL of hydrochloric acid and dilute it with water to 100 mL.
3.3.2 1 mol/L hydrochloric acid: measure 8.3mL of hydrochloric acid and dilute it with water to 100 mL.

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