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The establishment of EVISA is funded by the EU through the Fifth Framework Programme (G7RT- CT- 2002- 05112).


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Certified Reference Materials for Speciation Analysis


Measurements that represented a major brealthrough in speciation science were those that had a link with identified toxicity risks, namely the determination of methylmercury in biological tissues (Minamata) and organotins in environmental matrices (oysters in the bay of Arcachon). Public awareness was associated with expressed needs from the laboratories with respect to quality control tools, and organisations such as the National Institute for Environmental Sciences, NIES (Japan) and the National Research Council, NRCC (Canada) started work on the organisation of interlaboratory comparison studies for these compounds during the 1980s. In the late 1980s (1988 and after) the European Commission, through the BCR program, also launched a series of projects aimed at the improvement of the quality of speciation measurements for chemical forms of Al, As, Hg, Pb, Se and Se in various biological and environmental matrices, along with extractable forms of trace metals in soils and sediments.
 
Resulting from these combined efforts, today a couple of certified reference materials are commercially available that at least serve as a good starting point for the quality control and development of speciation analysis.
 
The following table summarizes the availability of different materials (for extractable forms see the column "others"):

Matrix                                Hg       
As       
Sn         Cr          Se         Pb         others
Aqueous solution        
                    
         
          
         
         
         
Natural water                                   
         
         
         
         
         
Sea water                                        
         
         
         
                    
Sediment                   
                    
         
         
         
         
         
Soil                                                
         
         
         
         
         
Sewage sludge           
         
         
         
         
         
         
         
Air particulate                                  
         
         
         
         
         
Cement                     
                    
         
                     
          
         
Plant                                              
          
         
         
         
         
Fish                                               
          
         
         
         
         
Mussel, Oyster           
                               
         
         
         
         
Food supplement       
                               
          
          
          
         
Urine                                              
          
         
         
          
         
Serum                                            
         
         
         
          
         
Whole blood              
                                
         
          
          
          
Hair                          
                               
         
         
         
         
* green boxes for available materials, dark blue boxes for non-available materials.
For more details click on the related green box.


Related Information (European Reference Materials' application notes)

IRMM: Comparison of a measurement result with the certified value
IRMM: Using reference materials to establish traceability
IRMM: Use of ERM certificates and materials
EURACHEM: Guide on the selection and use of reference materials
EVISA Company Database: Producers of CRMs
EVISA Material Database: CRMs


News related to CRMs

EVISA News, September 28, 2009: New Beryllium Reference Material for Occupational Safety Monitoring
EVISA News, September 10, 2009: Speciation Analysis - Striving for Quality
EVISA News, February 3, 2o009: New Reference Material for Hexavalent Chromium in Contaminated Soil
EVISA News, November 15, 2005: NIST/EPA/NJ DEP embark on the preparation of a soil reference materials for chromium speciation
EVISA News, August 2, 2005: New CRM for Selenomethionine in yeast developed by NRC Canada is now on the market
EVISA News, May 6, 2004: Reference materials producers launch new European initiative




last time modified: November 24, 2009




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