Standard No.:	GB/T 5009.138-2003
English Name:	Determination of nickel in foods
Chinese Name:	食品中镍的测定
Chinese Classification:	C53    Food sanitation
Professional Classification:	GB    National Standard
Issued by:	Ministry of Health
Issued on:	2003-08-01
Implemented on:	2004-1-1
Status:	abolished
Superseded by:	GB 5009.138-2017 Food safety national standard -- Determination of nickel in food
Superseded on:	2017-9-17
Abolished on:	2017-09-17
Superseding:	GB/T 16343-1996 Determination of nickel in foods
Language:	English
File Format:	PDF
Word Count:	3000 words
Price(USD):	244.0
Delivery:	via email in 1 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