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Polycyclic aromatic hydrocarbons in the occupational environment during exposure to bitumen fumes

100%

Posniak M.

Polish Journal of Environmental Studies

2005

tom 14

nr 6

Bitumens are produced and commonly used in paving, roofing and flooring operations, as well as corrosion-protective materials in Polish industry. During these processes bitumens, heated to the temperature range from 140°C to 200°C, emit multicomponent mixtures of toxic substances into the workplace air. Assessment of workers’ exposure to polycyclic aromatic hydrocarbons (PAHs) during road paving and production of roofing papers, asphalt-rubber blend and lute was the aim of this study. The results indicated that PAHs were detected in the breathing zone of all workers. Especially dangerous to human health was the process of roofing paper production. Exposure factors for PAHs (benzo [a] pyrene, benzo [a] anthracene, anthracene, dibenzo [a, h,] antracene, benzo [b] fluoranthene, benzo [k] fluoranthene, indeno [1,2,3-c, d] pyrene, chrysene, benzo [g, h, i] perylene) went up to 20.88 μg/m3.

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Assessment of metal hazard taking hair as an indicator of trace element exposure to workers in occupational environment

59%

Mehra R., Thakur A. S.

Journal of Elementology

2010

tom 15

nr 4

671-678

The use of biological tissues as diagnostic tools of trace element level for recognising the disease status of an exposed human population is an important area of investigation. Quantitative analysis of 10 trace elements viz lead, calcium, magnesium, chromium, manganese, iron, nickel, copper, and zinc in the human body was performed using hair as biopsy material. In the present investigation, workers in a roadways workshop, locomotive workshop and Pb battery units were included as subjects. Head hair samples were collected from the nape region of the skull. Subsequent to sampling of hair, a questionnaire recommended by the World Health Organization was filled in order to obtain details about the subjects regarding occupation, duration of exposure, medical history, etc. Concentration of elements in hair was determined using an atomic absorption spectrophotometer. Workers under mental stress were treated as cases and workers without any symptoms of mental stress were chosen as controls. Significant difference in concentration of lead, calcium, magnesium, manganese, nickel, copper and zinc was found in hair of subjects with mental stress than those of controls. Concentration of chromium and iron was found higher in hair of subjects with mental stress but this difference was not significant with respect to controls.

Ograniczanie wyników

1 Journal of Elementology

1 Polish Journal of Environmental Studies

1 Mehra R.

1 Posniak M.

1 Thakur A. S.

1 2010

1 2005

Wyniki wyszukiwania

Polycyclic aromatic hydrocarbons in the occupational environment during exposure to bitumen fumes

Assessment of metal hazard taking hair as an indicator of trace element exposure to workers in occupational environment