Document Detail

Extractive spectrofluorometric determination of quinalphos using fluorescein in environmental samples.
MedLine Citation:
PMID:  16160788     Owner:  NLM     Status:  MEDLINE    
A simple, sensitive, convenient and low cost spectrofluorometric technique for determination of quinalphos is described. Quinalphos is decomposed with sodium ethoxide. Resultant sodium diethyl thiophosphate (Na-DETP) is extracted with a cationic fluorescein as ion pair complex into 1-chloro-2-nitrobenzene. The fluorescence of the ion pair, fluorescein-DETP is measured at 530 nm after excitation at 490 nm. This technique is applicable for the determination of quinalphos in water, food grains and vegetable samples up to ng level with Amberlite XAD-4.
K Suvardhan; K Suresh Kumar; P Chiranjeevi
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Environmental monitoring and assessment     Volume:  108     ISSN:  0167-6369     ISO Abbreviation:  Environ Monit Assess     Publication Date:  2005 Sep 
Date Detail:
Created Date:  2005-09-14     Completed Date:  2005-12-21     Revised Date:  2009-05-11    
Medline Journal Info:
Nlm Unique ID:  8508350     Medline TA:  Environ Monit Assess     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  217-27     Citation Subset:  IM    
Environmental Monitoring Laboratory, Department of Chemistry, S. V. University, Tirupati, Andhra Pradesh, India.
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MeSH Terms
Environmental Monitoring / methods*
Fluorescent Dyes
Food Analysis / methods*
Insecticides / analysis*
Organothiophosphorus Compounds / analysis*
Oryza sativa / chemistry
Spectrometry, Fluorescence / methods
Triticum / chemistry
Vegetables / chemistry
Water Pollutants, Chemical / analysis
Reg. No./Substance:
0/Fluorescent Dyes; 0/Insecticides; 0/Organothiophosphorus Compounds; 0/Water Pollutants, Chemical; 13593-03-8/quinalphos; 2321-07-5/Fluorescein

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