Chow, J.C.* ; Watson, J.G.* ; Robles, J.* ; Wang, X.* ; Chen, L.W.* ; Trimble, D.L.* ; Kohl, S.D.* ; Tropp, R.J.* ; Fung, K.K.*
    
 
    
        
Quality assurance and quality control for thermal/optical analysis of aerosol samples for organic and elemental carbon.
    
    
        
    
    
        
        Anal. Bioanal. Chem. 401, 3141-52 (2011)
    
    
		
		
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			Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
		
     
    
		
		
			
				Accurate, precise, and valid organic and elemental carbon (OC and EC, respectively) measurements require more effort than the routine analysis of ambient aerosol and source samples. This paper documents the quality assurance (QA) and quality control (QC) procedures that should be implemented to ensure consistency of OC and EC measurements. Prior to field sampling, the appropriate filter substrate must be selected and tested for sampling effectiveness. Unexposed filters are pre-fired to remove contaminants and acceptance tested. After sampling, filters must be stored in the laboratory in clean, labeled containers under refrigeration (<4 °C) to minimize loss of semi-volatile OC. QA activities include participation in laboratory accreditation programs, external system audits, and interlaboratory comparisons. For thermal/optical carbon analyses, periodic QC tests include calibration of the flame ionization detector with different types of carbon standards, thermogram inspection, replicate analyses, quantification of trace oxygen concentrations (<100 ppmv) in the helium atmosphere, and calibration of the sample temperature sensor. These established QA/QC procedures are applicable to aerosol sampling and analysis for carbon and other chemical components.
			
			
				
			
		 
		
			
				
					
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        Publikationstyp
        Artikel: Journalartikel
    
 
    
        Dokumenttyp
        Wissenschaftlicher Artikel
    
 
    
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        Sprache
        englisch
    
 
    
        Veröffentlichungsjahr
        2011
    
 
    
        Prepublished im Jahr 
        
    
 
    
        HGF-Berichtsjahr
        0
    
 
    
    
        ISSN (print) / ISBN
        1618-2642
    
 
    
        e-ISSN
        1618-2650
    
 
    
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	    Band: 401,  
	    Heft: 10,  
	    Seiten: 3141-52 
	    Artikelnummer: ,  
	    Supplement: ,  
	
    
 
  
        
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            Verlag
            Springer
        
 
        
            Verlagsort
            Heidelberg
        
 
	
        
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        Peer reviewed
    
 
     
    
        POF Topic(s)
        90000 - German Center for Diabetes Research
    
 
    
        Forschungsfeld(er)
        Helmholtz Diabetes Center
    
 
    
        PSP-Element(e)
        G-501900-232
    
 
    
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        Erfassungsdatum
        2011-05-28