Respeciation of organic gas emissions and the detection of excess unburned gasoline in the atmosphere

Article Abstract:

The utilization of new and updated information to improve the accuracy and level of chemical detail of a review of speciation profiles for organic gas emissions is discussed. The photochemical reactivity of the revised speciation profiles are compared with the corresponding speciation profiles in the official emission inventory. The organic gas emission inventory for the Los Angeles area is recomputed with this information. It was found that the emissions of unburned gasoline relative to combustion-derived hydrocarbons are understated in the Los Angeles area.

Analysis, Environmental aspects, Los Angeles, California, Atmospheric chemistry, Gasoline

---

Human cell mutagens in Los Angeles air

Article Abstract:

A comprehensive study aimed at measuring the human cell mutagenicity of particulate air pollution samples gathered in Southern California is presented. The experiment utilized a human cell mutation assay which tested mutagenic activity at the thymidine kinase locus in h1A1v2 cells using a 72-h exposure. The experiment was randomly conducted in 1993 and no seasonal pattern of the mutagenic potency is followed. It is found out that Los Angeles urban air has high concentrations of human cell mutagens.

Research & Development, Scientific Research and Development Services, Air Pollution Control, Waste Management and Remediation Services, Measurement, Research institutes, Pollution, Los Angeles County, California, Air quality, Mutagens

---

Bioassay-directed chemical analysis of Los Angeles airborne particulate matter using a human cell mutagenicity assay

Article Abstract:

Unsubstituted polycyclic aromatic compounds (PAC) are the main sources of human cell mutagenicity within airborne fine particulate matter found in Los Angeles, CA. The main types of PACs found in the airborne matter are benzo[a]pyrene, benzo[b]fluoranthene, benzo[ghi]perylene, indeno[1,2,3-cd]pyrene, cyclopental[cd]pyrene, and benzo[k]flouranthene. Other mutagens present in the airborne particulate matter include 6H-benzo[cd]pyren-6-one and 2-nitrofluoranthene.

United States, Science & research, Cyclic Crude and Intermediate Manufacturing, Aromatic Hydrocarbons

Similar abstracts:

• Abstracts: Refuse incinerator particulate emissions and combustion residues for New York City during the 20th century. Twentieth century atmospheric metal fluxes into Central Park Lake, New York City
• Abstracts: Atmospheric deposition of toxic pollutants to the Great Lakes as measured by the integrated atmospheric deposition network
• Abstracts: Factors affecting indoor air concentrations of volatile organic compounds at a site of subsurface gasoline contamination

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.