GB/T 5009.18-2003: Determination of fluorine in foods

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Scope

This standard specifies the method for determination of fluorine in foods such
as grains, vegetables, fruits, beans and their products, meat, fish, eggs.
This standard applies to the determination of fluorine in foods. The fluoride ion
selective electrode method is not suitable for the specimens which have higher
fat content but are not ashed (such as peanuts, fat meat, etc.).
The detection limit of this method is 0.10 mg/kg for the method 1 and 1.25 mg/kg
for the method 2.
Method 1 -- Diffusion-fluorine reagent colorimetry

Basic Data

Standard ID	GB/T 5009.18-2003 (GB/T5009.18-2003)
Description (Translated English)	Determination of fluorine in foods
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	C53
Classification of International Standard	67.040
Word Count Estimation	8,845
Date of Issue	2003-08-11
Date of Implementation	2004-01-01
Older Standard (superseded by this standard)	GB/T 5009.18-1996
Summary	This standard specifies: grain, vegetables, fruits, legumes and their products, meat, fish, eggs and other foods fluorine determination. This standard applies to: foods fluorine determination. Fluoride ion selective electrode method does not apply to high fat content but without the ash sample (eg