Transboundary influences of particulate matter less than or equal to 2.5 μm in aerodynamic diameter (PM2.5) have been investigated in a U.S.–Mexican border region with the use of a dual fine particle sequential sampler (DFPSS) and a tapered element oscillating microbalance (TEOM). Daily ...
A new combination of a flow/sequential injection method for the analysis of ammonia has been developed. Gaseous ammonia is selectively absorbed in a phosphoric acid coated glass tube and determined with Berthelot reagents by flow injection. The combination of the gas diffusion denuder sampler with fl...
Transboundary influences of particulate matter less than or equal to 2.5 mu m in aerodynamic diameter (PM2.5) have been investigated in a U.S.-Mexican border region with the use of a dual fine particle sequential sampler (DFPSS) and a tapered element oscillating microbalance (TEOM(R)). ...
These results reveal the potential for the dichotomous sequential air sampler to replace the combination of the PM FRM air samplers, offering the capability of making simultaneous, self-consistent determinations of these particulate matter fractions in a routine ambient monitoring mode....
The Sequential Spot Sampler (S~3) is a simple, compact, and low maintenance system that has been developed by the scientists in Aerosol Dynamics Inc., to produce time resolved measurements of ambient aerosol chemical composition. The system grows aerosol particulates by passing the flow of air ...
Samples were collected in Shanghai (East China) over a one-year period using an automatic volume-based sequential rain sampler designed by ourselves. Organic acids significantly contributed (17.8 ± 10.2%) to the acidity of rainfall events in Shanghai. We observed that the concentration of each ...