منابع مشابه
Metals: Fresh Track on Indoor Dust
Dust is seldom innocuous. At the very least, it can earn homeowners a reputation for lax housekeeping. More important from a health perspective, it can also exacerbate asthma and allergies. Growing evidence suggests this humble material may pose other health threats caused in part by metals and other potentially toxic substances that hitchhike on core particles. In traditional risk assessment, ...
متن کاملMetals and dust in high redshift AGNs
We summarize some recent results on the metallicity and dust properties of Active Galactic Nuclei (AGN) at high redshift (1<z<6.4). By using the spectra of more than 5000 QSOs from the SDSS we find no evidence for any metallicity evolution in the redshift range 2<z<4.5, while there is a significant luminosity–metallicity dependence. These results are confirmed by the spectra of a smaller sample...
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An overview is given of the chemical processes that occur in primordial systems under the influence of radiation, metal abundances and dust surface reactions. It is found that radiative feedback effects differ for UV and X-ray photons at any metallicity, with molecules surviving quite well under irradiation by X-rays. Starburst and AGN will therefore enjoy quite different cooling abilities for ...
متن کاملUnwelcome Guest: PBDEs in Indoor Dust
Although house dust is known to be a predominant source of exposure to PBDEs, it's not yet clear which part of the dust these chemicals bind to. The dust pictured above contains pet hair (rust brown), pollen (yellow), plant fibers (green), dead skin cells (light to medium brown), dirt and minerals (orange), textile fibers (blue), and spider silk (pink).
متن کاملOccurrence of organochlorine pesticides in indoor dust.
Organochlorine pesticides are present in the environment and suspected of causing serious health effects. Diet has been the main exposure source, but indoor source release is gaining focus. Within a monitoring study of polychlorinated biphenyls of Danish buildings built during the 1960s and 1970s, we coincidently determined extreme levels of dichlorodiphenyltrichloroethane (DDT) levels in two o...
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ژورنال
عنوان ژورنال: Environmental Health Perspectives
سال: 2008
ISSN: 0091-6765,1552-9924
DOI: 10.1289/ehp.116-a198