aerosol dilution Articles

  • Deposition flux of aerosol particles and 15 PAHs in the North China Plain

    Deposition fluxes of aerosol particles and 15 PAHs associated with the particles in the North China Plain were examined. The annual mean deposition fluxes of aerosol particles and 15 PAHs were 0.69 ± 0.46 g/(m2 · d) and 8.5 ± 6.2 μg/(m2 · d), respectively. Phenanthrene, fluoranthene, pyrene, chrysene, benzo[b]fluoranthene and benzo[k]fluoranthene were dominant PAHs bound to deposited aerosol ...


    By John Wiley & Sons, Ltd.

  • Heterogeneous photochemistry of imidazole-2-carboxaldehyde: HO₂ radical formation and aerosol growth

    Abstract The multiphase chemistry of glyoxal is a source of secondary organic aerosol (SOA), including its lightabsorbing product imidazole-2-carboxaldehyde (IC). IC is a photosensitizer that can contribute to additional aerosol ageing and growth when its excited triplet state oxidizes hydrocarbons (reactive uptake) via H-transfer chemistry. We have conducted a series of ...


    By ECO PHYSICS AG

  • Least-Cost Approaches to Reducing Acid Emissions

    ' The costs of meeting sulfur emission targets can be high. It is essential, therefore, that countries adopt policies which (a) minimize the net economic and social costs of reducing emissions to the agreed target levels, and (b) maximize the overlap between measures designed to reduce acidifying emissions and those addressing other forms of air pollution. This note discusses alternative ...


    By The World Bank

  • Fluid waste management and disposal practices

    Prior to the early 80s and the introduction of AIDS into our society, infection control practices were designed almost exclusively to protect the patient from developing a nosocomial infection an infection acquired after admission to the hospital. Protocols were focused on protecting the patient, with little or no emphasis on the health care workers potential to become infected. Hepatitis B has ...

  • IAQ investigators often overlook Bacteria as the Root Cause of Occupant Complaints

    Untitled Document Many investigators have been dealing with mold issues the last few years and may have been overlooking bacteria as the underlying microbial problem. Bacteria ...


    By EMSL Analytical, Inc.

  • Sick-building syndrome and building-related illness

    Significant health problems linked to very poor indoor air qualityIndoor Air Quality (IAQ) deals with the content of interior air that could affect health and comfort of building occupants. The IAQ may be compromised by microbial contaminants (mold, bacteria), chemicals (such as carbon monoxide, radon), allergens, or any mass or energy stressor are more prevalent than anyone could have predicted. ...

  • Ionising Radiation

    Introduction The energy level of some types of radiation is high enough so that when they interact with matter they cause the formation of electrically charged particles or ion-pairs and break molecular bonds. These so-called ionising radiations are by their nature potentially harmful to life; at high doses they can be lethal and at lower doses can cause genetic damage. Ionising radiation occurs ...

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