Development and certification of the new NIES CRM 28: urban aerosols for the determination of multielements

Abstract

A new environmental certified reference material (CRM) for the determination of multielements in aerosol particulate matter has been developed and certified by the National Institute for Environmental Studies (NIES), Japan, based on analyses by a network of laboratories using a wide range of methods. The origin of the material was atmospheric particulate matter collected on filters in a central ventilating system in a building in Beijing city centre. The homogeneity and stability of this material were sufficient for its use as a reference material. Values for elemental mass fractions in the material were statistically determined based on the analytical results of the participating laboratories. Eighteen certified values and 14 reference values were obtained. The diameters, obtained from a micrographic image using image analysis software, of 99% of the particles were less than 10 microm, demonstrating that almost all the particles in the material could be classified as particles of 10 microm or less in aerodynamic diameter. The chemical composition and particle size distribution of this material were close to those of an authentic aerosol collected in Beijing. NIES CRM 28 is appropriate for use in analytical quality control and in the evaluation of methods used in the analysis of aerosols, particularly those collected in urban environments in northeast Asia.

Lipopolysaccharide levels adherent to PM2.5 play an important role in particulate matter induced‐immunosuppressive effects in mouse splenocytes

“…PM2.5 “Beijing 1996–2005” from NIES (Mori et al, ) was fractionated by filtering and PM with a diameter ≤2.5 μm was collected.…”

Urban and suburban aerosol in Yokohama, Japan: a comprehensive chemical characterization

“…Moreover, recovery analysis was done to check the validity of the analytical procedure of various metals using certified reference material, CRM 28. CRM 28 is a new environmental certified reference material, developed and certified by National Institute for Environmental Studies (NIES), Japan (Mori et al 2008). The six samples of CRM 28 were digested using Berghof's MWS-2 microwave digestion system.…”

Preparation of standard materials of aerosol particles for X‐ray fluorescence analysis using a small chamber sampling unit

“…A powder‐formed urban aerosol certified reference material (CRM) from NIES CRM No. 28, which was certified major and trace elements in urban aerosol collected in Beijing, China, was set in the acrylic chamber. Table lists the certified values and reference values of major and trace elements in NIES CRM No.…”