Spectrophotometric Determination of Ammonia and Nitrogen Oxides in the Reaction Products of Ammonia Oxidation

2004 ◽  
Vol 59 (4) ◽  
pp. 331-334 ◽  
Author(s):  
E. F. Sutormina
Keyword(s):  
Nitrogen Oxides ◽  
Spectrophotometric Determination ◽  
Ammonia Oxidation ◽  
Reaction Products

scholarly journals Kinetic-Spectrophotometric Determination of Iodide Based on its Inhibitory Effect on the Decolorization Reaction of Methyl Orange

2009 ◽  
Vol 6 (4) ◽  
pp. 1267-1273
Author(s):  
Reyhaneh Rahnama Kozani ◽  
Ferydoun Ashrafi ◽  
Masuod Khalilnezhad ◽  
Mohammad Reza Jamali
Keyword(s):  
Methyl Orange ◽  
Spectrophotometric Determination ◽  
Limit Of Detection ◽  
Inhibitory Effect ◽  
Calibration Graph ◽  
Reaction Products ◽  
Optimum Conditions ◽  
Relative Standard ◽  
Kinetic Spectrophotometric

A simple, sensitive, rapid and reliable method has been developed for spectrophotometric determination of iodide based on its inhibition effect on the redox reaction between bromate and hydrochloric acid. The decolorization of methyl orange by the reaction products was used to monitor the reaction spectrophotometrically at 525 nm. The variables affecting the rate of the reaction were investigated. Under the optimum conditions, the limit of detection is 1.5 × 10-7mol L-1and calibration range is 2.0 × 10-6–1.3 × 10-4mol L-1of iodide. The linearity range of the calibration graph is depends on bromate concentration. The relative standard deviation of ten-replication determination of 8.2 × 10-5mol L-1iodide was 1.4%. The proposed method was applied to the determination of iodide in natural water samples with satisfactory results.

Diazo-coupling spectrophotometric determination of nitrogen oxides in the air

2016 ◽  
Vol 7 (2) ◽  
pp. 333-338 ◽  
Author(s):  
Yingying Huang ◽  
Wenjian Shi ◽  
Caihong Zhang ◽  
Liang Li ◽  
Haifeng Wen
Keyword(s):  
Nitrogen Oxides ◽  
Spectrophotometric Determination ◽  
Diazo Coupling

Spectrophotometric Determination of Total Cr in Water

2018 ◽  
Author(s):  
Xhulieta Hamiti ◽  
Ilirjana Boci ◽  
Pranvera Lazo
Keyword(s):  
Spectrophotometric Determination
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