Document Detail


Determination of mercury in fish by cold vapor atomic absorption spectrophotometry using a multicommuted flow injection analysis system.
MedLine Citation:
PMID:  16772686     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A flow system was developed for the determination of total mercury concentration in fish samples by cold vapor atomic absorption spectrophotometry (CVAAS), based on the multicommuted flow injection analysis (MCFIA) approach. The system uses independently controlled solenoid valves for the introduction of reagents and samples. When not injected, solutions were recirculating to the reservoir bottles, in this way reducing the waste produced by the analytical system and also the sample consumption. Results were compared to those obtained by the reference flow injection procedure. Accuracy was also assessed by recovery studies using a certified reference material as well as spiked samples; recovery percentages in the range of 90.7% to 99.8% were found. The repeatability of the method was better than 6.0% (RSD, n = 10). A limit of detection of 4.8 microg of mercury per kg of fresh fish sample was achieved. The total waste produced was reduced to 30% of that from the reference flow injection CVAAS procedure.
Authors:
M Fátima Silva; Ildikó V Tóth; António O S S Rangel
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Analytical sciences : the international journal of the Japan Society for Analytical Chemistry     Volume:  22     ISSN:  0910-6340     ISO Abbreviation:  Anal Sci     Publication Date:  2006 Jun 
Date Detail:
Created Date:  2006-06-14     Completed Date:  2007-05-24     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  8511078     Medline TA:  Anal Sci     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  861-4     Citation Subset:  IM    
Affiliation:
Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Porto, Portugal.
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MeSH Terms
Descriptor/Qualifier:
Animals
Chemistry Techniques, Analytical / methods
Environmental Pollutants / analysis
Fishes
Flow Injection Analysis / instrumentation*,  methods*
Mercury / toxicity*
Mercury Poisoning / diagnosis*
Reproducibility of Results
Spectrophotometry, Atomic / instrumentation*,  methods*
Water Pollutants, Chemical / analysis
Chemical
Reg. No./Substance:
0/Environmental Pollutants; 0/Water Pollutants, Chemical; 7439-97-6/Mercury

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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