Standard No.:	GB/T 5009.18-2003
English Name:	Determination of fluorine in foods
Chinese Name:	食品中氟的测定
Chinese Classification:	C53    Food sanitation
Professional Classification:	GB    National Standard
Source Content Issued by:	AQSIQ
Issued on:	2003-8-11
Implemented on:	2004-1-1
Status:	superseded
Superseded by:	GB 5009.18-2025 National food safety standard - Determination of fluorine in foods
Superseded on:	2025-9-16
Abolished on:	2025-09-16
Superseding:	GB/T 5009.18-1996 Method for determination of fluorine in foods
Target Language:	English
File Format:	PDF
Word Count:	3000 words
Translation Price(USD):	60.0
Delivery:	via email in 1 business day

This standard specifies method for determination of fluorine in foods like grain, vegetables, fruit, beans and their products, meat, fish and egg. This standard is applicable to the determination of fluorine in foods. Fluoride ion-selective electrode method is not applicable to sample with high fat content while without ashing (like peanut, fat meat etc.). Detection limit of this method: method I is 0.10mg/kg and method II is 1.25mg/kg.

Foreword I 1 Scope 2 Principle 3 Reagent 4 Instrument 5 Analysis Procedures 6 Principle 7 Reagent 8 Instrument 9 Analysis Procedures 10 Principle 11 Reagent 12 Instrument 13 Analysis Procedures