Certified reference materials for the determination of industrial air contaminants on sorbing agentsFunded under: FP2-BCR 4
National and international legislation prescribes periodic monitoring of the exposure of each individual worker to certain potentially harmful vapours. Most techniques of measurement are based on sorption of the air contaminants on a suitable sorbing agent and subsequent desorption and measurement in the analytical laboratory. Experience shows that the quality of the analyses needs improvement and consequently that certified reference materials are necessary. The BCR has therefore started the certification of a range of reference materials for general quality control in occupational health laboratories. A first reference material (CRM 112; tubes with tenax containing approx. 1 microg of benzene, toluene and m-xylene) was recently certified. The work done to certify this material is presented including: improvement of the analytical quality in the participating laboratories; method of preparation; homogeneity and stability tests; and analytical results and certified values. A similar project to certify chloroalkanes sorbed on tenax is in progress. The feasibility of similar projects for esters, ethers and ketones is being studied. The feasibility of reference materials on the basis of activated charcoal is also being studied.
Bibliographic Reference: Paper presented: 11th International Symposium on Microchemical Techniques, Wiesbaden (DE), Aug. 29, 1989
Availability: Text not available
Record Number: 198910793 / Last updated on: 1994-12-01
Original language: en
Available languages: en