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A novel method for the spectrophotometric determination of nitrite in water.
MedLine Citation:
PMID:  18970107     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
A rapid, simple, selective and sensitive method for the spectrophotometric determination of nitrite in water has been developed and optimum reaction conditions along with other analytical parameters have been evaluated. Nitrite reacts with barbituric acid in acidic solution to give the nitroso derivative, violuric acid. At analytical wavelength of 310nm, Beer's law is obeyed over the concentration range 0.00-3.22ppm of nitrite. The molar absorptivity is 15330+/-259.7 (95%) with pooled standard deviation of 355.57 and R.S.D. of 2.32%. As well as the method is sensitive (2.99x10(-3)mug NO(2)cm(-2)) and selective, it tolerates most of the potential interferents. It has been successfully applied to nitrite determination in natural waters by use of a calibration graph with determination limit of 1.66mug NO(2) in 100mL working solution corresponding to minimum 9.5ppb NO(2)-N in water samples. Lower concentrations of nitrite (3.0mug NO(2)/L sample) is precisely analyzed by using the method of dilution with sample, with R.S.D. of lower than 0.5%. The results were compared with standard N-(1-naphtyl)ethylenediamine dihydrochloride method and very good agreement between the data was observed. The method can easily be applied in the field.
Authors:
Adnan Aydın; Ozgen Ercan; Sülin Taşcıoğlu
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Talanta     Volume:  66     ISSN:  1873-3573     ISO Abbreviation:  Talanta     Publication Date:  2005 Jun 
Date Detail:
Created Date:  2008-10-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2984816R     Medline TA:  Talanta     Country:  England    
Other Details:
Languages:  eng     Pagination:  1181-6     Citation Subset:  -    
Affiliation:
Marmara University, Environmental Research Center, Göztepe Kampüsü, 81040 Istanbul, Turkey.
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