Standard No.:	GB/T 21918-2008
Chinese Name:	食品中硼酸的测定
English Name:	Method for determination of Boric acid in Foods
Professional Classification:	X04 Basic standards and general methods
Professional Classification:	GB National Standard
ICS Classification:	67.040
Issued by:
Issued on:	2008-05-16
Implemented on:	2008-11-01
Status:	ABOLISHED
Replace By:	GB5009.275-2016
Replace By Date:
Language:	English
File Format:	PDF
Word Count:
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This standard specifies the determination method of boric acid in foods.
This standard is applicable to determine the boric acid in foods like aquatic products, meat products (meatballs and fish balls), beans, cooked wheaten food, bean curd sticks, rice dumplings, cakes and soya sauce.
Detection limit of this standard: 2.50mg/kg for colorimetric method with curcuma extracted with ethyl hexanediol-trichloromethane (Method I); 1.00mg/kg for inductively coupled plasma atomic emission spectrometry (ICP-AES) while 0.20mg/kg for inductive coupled plasma mass spectrometry (ICP-MS) (Method II).