Flow-injection spectrophotometric determination of vanadium with malachite green oxalate by bromate in acidic and micellar medium

Rare Metals ◽  
2011 ◽  
Vol 30 (3) ◽  
pp. 216-221 ◽  
Author(s):  
Mohsen Keyvanfard ◽  
Narges Abedi
Keyword(s):  
Malachite Green ◽  
Spectrophotometric Determination ◽  
Flow Injection ◽  
Micellar Medium ◽  
Malachite Green Oxalate

scholarly journals The Development of a New Kinetic Spectrophotometric Method for the Determination of Vanadium(V) Based on its Catalytic Effect on the Oxidation of Malachite Green Oxalate by Bromate in Acidic and Micellar Medium

2010 ◽  
Vol 7 (4) ◽  
pp. 1612-1620 ◽  
Author(s):  
M. Keyvanfard ◽  
N. Abedi
Keyword(s):  
Malachite Green ◽  
Spectrophotometric Method ◽  
Catalytic Effect ◽  
Limit Of Detection ◽  
Fixed Time ◽  
Micellar Medium ◽  
Relative Standard ◽  
Kinetic Spectrophotometric ◽  
Malachite Green Oxalate

A new, simple, sensitive and selective kinetic spectrophotometric method was developed for the determination of ultra trace amounts of vanadium(V). The method is based on the catalytic effect of vanadium(V) on the oxidation of malachite green oxalate (MG) by bromate in acidic and micellar medium. The reaction was monitored spectrophotometrically by measuring the decrease in the absorbance of malachite green oxalate (MG) at 625 nm with a fixed-time method. The decrease in the absorbance of MG is proportional to the concentration of vanadium(V) in the range of 1-100 ng/mL with a fixed time of 0.5-2 min from the initiation of the reaction. The limit of detection is 0.71 ng/mL of vanadium(V). The relative standard deviation for the determination of 5, 30, 50 ng/mL of vanadium(V) was2.5% 2.6%, 2.4% and respectively. The method was applied to the determination of vanadium(V) in water samples.

Flow-injection spectrophotometric determination of nicotinic acid in micellar medium of N-cetylpyridinium chloride

2001 ◽  
Vol 427 (1) ◽  
pp. 93-100 ◽  
Author(s):  
Elisa Capella-Peiró ◽  
Llorenç Monferrer-Pons ◽  
Celia Garcı́a-Alvarez-Coque ◽  
Josep Esteve-Romero
Keyword(s):  
Nicotinic Acid ◽  
Spectrophotometric Determination ◽  
Flow Injection ◽  
Cetylpyridinium Chloride ◽  
Micellar Medium

scholarly journals Flow-Injection Spectrophotometric Determination of Novalgin in Pharmaceuticals Using Micellar Medium

2007 ◽  
Vol 23 (12) ◽  
pp. 1383-1389 ◽  
Author(s):  
Patrícia Los WEINERT ◽  
João Roberto FERNANDES ◽  
Leonardo PEZZA ◽  
Helena Redigolo PEZZA
Keyword(s):  
Spectrophotometric Determination ◽  
Flow Injection ◽  
Micellar Medium

Flow Injection Spectrophotometric Determination of Ferbam Based on a Photochemical Reaction

2003 ◽  
Vol 142 (4) ◽  
pp. 231-235 ◽  
Author(s):  
Tom�s P�rez-Ruiz ◽  
Carmen Mart�nez-Lozano ◽  
Virginia Tom�s ◽  
Antonio Sanz ◽  
Raquel Garre
Keyword(s):  
Spectrophotometric Determination ◽  
Flow Injection ◽  
Photochemical Reaction
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