The 1993 QUASIMEME laboratory-performance study: chlorobiphenyls in fish oil and standard solutions
Wells, D.E.; de Boer, J. (1994). The 1993 QUASIMEME laboratory-performance study: chlorobiphenyls in fish oil and standard solutions. Mar. Pollut. Bull. 29(4-5): 174-84
In: Marine Pollution Bulletin. Macmillan: London. ISSN 0025-326X; e-ISSN 1879-3363, meer
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Analysis > Chemical analysis
Analysis > Mathematical analysis > Statistical analysis
Biological phenomena > Accumulation > Bioaccumulation
Chemical compounds > Organic compounds > Hydrocarbons > Halogenated hydrocarbons > Chlorinated hydrocarbons
Environments > Aquatic environment > Marine environment
Fauna > Aquatic organisms > Aquatic animals > Fish
Information handling
Information services
Information systems
Laboratories
Monitoring > Environmental monitoring
Monitoring > Environmental monitoring > Pollution monitoring
Performance evaluation
Pollution > Water pollution > Marine pollution
Products > Fishery products > Processed fishery products > Fish oils
Quality assurance
Quality control
Standards
Water pollution
Marien/Kust |
| Auteurs | | Top |
- Wells, D.E.
- de Boer, J., meer
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| Abstract |
A laboratory-performance study has been undertaken to improve the measurement of chlorobiphenyls in marine biota as part of the QUASIMEME (EU--Measurement and Testing) project. Fifty-two laboratories were invited to participate, of which 47 returned data on nine congeners in iso-octane solution and in cod liver oil. The concentration of CBs ranged between 7 and 124 mu g/kg in the oil. The robust statistical analysis gave a within-laboratory relative standard deviation from 5.7 to 14.4% and between-laboratory relative standard deviation from 17.6 to 37%. Over 60% of all errors were due to inaccurate calibration, poor GC separation and non-analytical mistakes by 13 of the laboratories. |
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