Full-text resources of PSJD and other databases are now available in the new Library of Science.
Visit https://bibliotekanauki.pl
Preferences help
Polish version English version Language
enabled [disable] Abstract
Number of results

Results found: 3

Number of results on page
first rewind previous Page / 1 next fast forward last

Search results

Search:
in the keywords:  Particulate matter
help Sort By:

help Limit search:
first rewind previous Page / 1 next fast forward last
1
Publication available in full text mode
Content available

Environmental Effects of Quarrying Activities in Akure, Ondo State, Nigeria

100%
Hamzart-Giwa O. G., Odiyi B. O., Afolabi O. J.
World News of Natural Sciences
|
2023
|
vol. 49
122-136
EN
This study investigated the particulate matters, noise generated and the impacts of the activities on the quarry workers. Three quarries and a control site were selected for this study. A particulate matter counter (CLJ-D particulate counter) was used to count suspended particles and a hand-held device (SL-4012 sound meter) was used to determine the noise levels at different distances away from the crushing point (0 m, 50 m, 100 m, 150 m and 200 m). A well-structured closed questionnaire was used to collect information about demographic, health implications and status of respondents working at the quarry site. Samchaise quarry has the highest total suspended particulate matter (691.82 µg/m3 and 662.19 µg/m3) for 0 m and 50 m sampling point respectively. For 100 m, 150 m and 200 m, Dortmond quarry has the highest total suspended particulate matter of 609.82 µg/m3, 501.57 µg/m3 and 450.34 µg/m3 respectively. Dortmond quarry has the highest noise level (94.90 dB and 88.70 dB respectively) at 0 m and 50 m; Meanwhile, Ebenezer quarry has the highest noise level of 82.50 dB, 79.30 dB and 74.30 dB for 100 m, 150 m and 200 m respectively. Furthermore, out of the seventy (70) respondents interviewed, 22 (31.43%) of the workers had been working for over 5 years. Although, majority of the respondents 66 (94.29%) know the health implication of working in a quarry, only few respondents 6 (8.57%) used the protective gear always. In addition, 21 (39.62%) experienced catarrh monthly, headache 19 (35.85%) weekly, eyes ache 12 (22.64%), ear ringing 7 (13.21) at least daily, body ache 19 (35.85%) daily, skin itch 25 (47.17%) daily, and visual disturbance 10 (18.87%) daily. This study has shown that the quarry workers need to be trained and educated about the impacts of their activities in the environment.
2
Content available remote

Analysis of airborne metal containing particles with EDX/EDS detectors in electron microscopes

88%
Sielicki P., Janik H., Guzman A., Reynolds A., Namieśnik J.
Open Chemistry
|
2011
|
vol. 9
|
issue 2
308-313
EN
In years 2006–2010 particulate matter analysis was undertaken for dust samples collected from Gdansk and London area in order to compare their morphology and composition. Part of those studies was devoted to analysis of particulate matter (PM) bearing metals. Characterization of the morphology and size of the particles collected onto the filters was performed using a scanning electron microscope (SEM) and transmission electron microscope (TEM). Both electron microscopes were equipped with energy dispersive X-ray spectrometers to identify the elemental composition of the particles. On analysis of the X-ray spectra acquired by both TEM and SEM, the particles were divided into 10 groups as follows: Al-rich, Ba-rich, C-rich, Ca-rich, Cl-rich, Fe-rich, Mg-rich, Na-rich, S-rich, Si-rich. Speciation of the particles based on the major element and accompanying minor elements yielded 34 particle types. However, some pairs of elements repeat, for instance: Na-Cl and Cl-Na, Al-S and S-Al, Si-Al and Al-Si, S-Ca and Ca-S. These are undoubtedly the same types of particles; variation in peak heights of the major and minor elements is normal in a mixed particle population.
3
Content available remote

Toxic elements content in PM10 samples from a coastal area of the Northern Adriatic Sea

88%
Cozzi F., Adami G., Barbieri P., Reisenhofer E., Apostoli P., Bovenzi M.
Open Chemistry
|
2010
|
vol. 8
|
issue 5
1014-1026
EN
PM10 samples were collected during winter and summer seasons at two different sites in the area of Trieste (Italy). The content of As, Cd, Cr, Mn, Ni, Pb and V in the PM10 samples was determined by inductively coupled plasma-mass spectrometry, with the purpose of evaluating the relevance of PM10 inhalation as a route of human exposure to these elements. The results showed that the ambient air concentration of the aforementioned elements were below the limits or target values for both sites and season. Site and season-specific correlation analysis was conducted for the identification of metals with similar origin: very good correlation for the couple Ni-V was found in both sites and seasons, showing the influence of combustion of heavy oils in PM10 composition. The inter-site and seasonal variability of both PM10 and metal concentrations were examined. A stronger impact by the vehicular traffic on the PM10 and metal concentrations was found for the urban site in both seasons. Because of the great importance of the “Bora” wind on the local climate, variability of PM10 and toxic elements concentration with wind were analysed, allowing determination of the effect of wind on dilution of the pollutants for the urban site during both seasons. [...]
first rewind previous Page / 1 next fast forward last
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.