Standard No.:	GB/T 5009.138-2003
Chinese Name:	食品中镍的测定
English Name:	Determination of nickel in foods
Professional Classification:	C53 Food sanitation
Professional Classification:	GB National Standard
ICS Classification:	67.040
Issued by:
Issued on:	2003-08-01
Implemented on:	2004-01-01
Status:	ABOLISHED
Replace By:	GB5009.138-2017
Replace By Date:
Language:	English
File Format:	PDF
Word Count:	3500 words
Price(USD):	105 (USD)
Delivery:	via email in 1-3 business day

1 Scope

This Standard specifies a method for determination of nickel in foods with graphite furnace atomic absorption spectrophotometry.
This Standard is applicable to the determination of nickel in various foods.
Method I: Atomic Absorption Spectrophotometry

2 Principle

The samples shall undergo digestive treatment, and then shall be put into the graphite furnace of atomic absorption spectrophotometer; after electrothermal atomization, resonance line at 232.0 nm is absorbed; its absorbance is proportional to nickel content; quantitation shall be conducted by comparing with standard series.
As for this method, the detection limit is 1.4 ng/mL and the linearity range is 0 ng/mL~100 ng/mL.

3 Reagent