scholarly journals Atomic Absorption Spectrophotometric Determination of Trace Amounts of Heavy Metals in Food by Extraction with Sodium Diethyldithiocarbamate-Diisobutyl Ketone

1988 ◽  
Vol 29 (4) ◽  
pp. 249-255_1
Author(s):  
Koichiro YOSHIDA ◽  
Shinji MIYAKOSHI ◽  
Takayoshi HASEGAWA
Keyword(s):  
Heavy Metals ◽  
Atomic Absorption ◽  
Spectrophotometric Determination ◽  
Sodium Diethyldithiocarbamate

Comparison of Methods for Determining Biuret in Urea

1979 ◽  
Vol 62 (1) ◽  
pp. 153-159
Author(s):  
Luis F Corominas ◽  
Victor M Boy ◽  
Manuel Guijosa
Keyword(s):  
Atomic Absorption ◽  
Spectrophotometric Determination ◽  
Atomic Absorption Spectrophotometry ◽  
International Organization ◽  
Comparison Of Methods ◽  
Definite Advantage ◽  
Absorption Spectrophotometry ◽  
Alternative Procedures ◽  
Aoac Method

Abstract The official first action AOAC method for the spectrophotometric determination of biuret in urea, 2.072—2.074, was compared with official first action AOAC method 2.C01-2.C03 (atomic absorption spectrophotometry), 2 simplified versions of 2.072-2.074, and modified versions of 2 alternative procedures of the International Organization for Standardization. Three synthetic urea samples (0.3, 1.4, and 3.0% biuret) and 1 commercial urea sample (1.0% biuret) were analyzed. The methods proved to be equivalent and none showed a definite advantage over 2.072-2.074. The purification of biuret and the interference by ammonia are also discussed.

Extraction-atomic-absorption spectrophotometric determination of antimony by generation of its hydride in non-aqueous media

The Analyst ◽  
1984 ◽  
Vol 109 (2) ◽  
pp. 123-125 ◽  
Author(s):  
José Aznárez ◽  
Francisco Palacios ◽  
Maria S. Ortega ◽  
Juan Carlos Vidal
Keyword(s):  
Atomic Absorption ◽  
Spectrophotometric Determination ◽  
Aqueous Media
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