Exposure to diesel exhaust fumes in the context of exposure to ultrafine particles.
PBN-AR
Instytucja
Instytut Medycyny Pracy im. prof. dr. med. Jerzego Nofera
Informacje podstawowe
Główny język publikacji
EN
Czasopismo
International Journal of Occupational Medicine and Environmental Health
ISSN
1232-1087
EISSN
1896-494X
Wydawca
Instytut Medycyny Pracy im. prof. dr. med. Jerzego Nofera
DOI
Rok publikacji
2016
Numer zeszytu
4
Strony od-do
667-682
Numer tomu
29
Identyfikator DOI
Liczba arkuszy
Słowa kluczowe
angielski
occupational exposure
ultrafine particles
diesel engine exhaust
particles number concentration
particles surface area concentration
SEM/EDS analysis
Open access
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Creative Commons — Uznanie autorstwa-Niekomercyjne
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Streszczenia
Język
angielski
Treść
Objectives: Diesel exhaust fumes emission is a significant source of ultrafine particles, the size of which is expressed in nanometers. People occupationally exposed to diesel exhaust particles include mainly workers servicing vehicles with engines of this type. This article presents the analysis of measurements of ultrafine particle concentrations occurring in the bus depot premises during the work connected with everyday technical servicing of buses. Material and Methods: The measurements were carried out in the everyday servicing (ES) room of the bus depot before, during and after the work connected with bus servicing. Determinations included: particle concentrations in terms of particle number and particle surface area, and mass concentrations of aerosol. Results: Mean value of number concentration of 10- to 1000-nm particles increased almost 20-fold, from 7600 particles/cm3 before starting bus servicing procedures to 130 000 particles/cm3 during the bus servicing procedures in the room. During the procedures, the mean surface area concentration of particles potentially deposited in the alveolar (A) region was almost 3 times higher than that of the particles depositing in the tracheo-bronchial (TB) region: 356.46 μm2/cm3 vs. 95.97 μm2/cm3, respectively. The mass concentration of the fraction of particulate matter with aerodynamic diameter 0.02–1 μm (PM1) increased 5-fold during the analyzed procedures and was 0.042 mg/m3 before, and 0.298 mg/m3 while the procedures continued. Conclusions: At the time when bus servicing procedures continued in the ES room, a very high increase in all parameters of the analyzed particles was observed. The diesel exhaust particles exhibit a very high degree of fragmentation and, while their number is very high and their surface area is very large, their mass concentration is relatively low. The above findings confirm that ultrafine particles found in diesel exhaust fumes may be harmful to the health of the exposed people, and to their respiratory tract in particular.
Cechy publikacji
oryginalny artykuł naukowy
Inne
System-identifier
PX-58ada962d5deb3e612233177
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