نتایج جستجو برای: particle particulate matter

تعداد نتایج: 391311  

Journal: :Environmental Health Perspectives 1995
P Styer N McMillan F Gao J Davis J Sacks

To investigate the possible relationship between airborne particulate matter and mortality, we developed regression models of daily mortality counts using meteorological covariates and measures of outdoor PM10. Our analyses included data from Cook County, Illinois, and Salt Lake County, Utah. We found no evidence that particulate matter < or = 10 microns (PM10) contributes to excess mortality i...

2016
M. Habil D.D. Massey A. Taneja

Human exposure to fine particles can have significant harmful effects on the respiratory and cardiovascular system. To investigate daily exposure characteristics to PM2.5 with ambient concentrations in an urban environment, a personal exposure measurements were conducted for school children, office workers and at their residents, in the city of Taj 'Agra', India. In order to account for all the...

Journal: :international journal of environmental research 2012
e. chianese a. riccio i. duro m. trifuoggi p. iovino

the state of works of art exhibited inside museums can be strongly influenced by indoor air quality, due to chemical activity of gaseous pollutants and particulate matter. for that reason it is important to carry out periodic air quality controls to check if the concentration levels of air pollutants comply with the limits specified by the national laws. in this work we show results obtained i...

Journal: :international journal of environmental research 2014
j. sulejmanović t. muhić-šarac m. memić a. gambaro a. selović

a study of the atmospheric particulate size distribution of total suspended particulate matter(tspm) and associated heavy metals concentrations has been carried out for the urban part of sarajevo city,bosnia and herzegovina. urban particles (n=150) were collected using a high volume air sampler equippedwith a 6-stage impactor. apart from fe which has been determined by flame atomic absorption s...

Journal: :international journal of environmental research 0

effect of automobile pollution on the productivity of crocus sativus was studied for one year time period (october 2005-april 2006). the parameters which were analyzed viz total chlorophyll, carotenoids, leaf area, plant height, corm size, corm weight, corm yield, biomass, flower production, and length of stigma and style, showed a remarkable decrease as compared to control. total chlorophyll ,...

Journal: :Applied optics 2012
Tihomir Sabinov Kostadinov David A Siegel Stéphane Maritorena Nathalie Guillocheau

The suspended particle assemblage in complex coastal waters is a mixture of living phytoplankton, other autochthonous matter, and materials of terrestrial origin. The characterization of suspended particles is important for understanding regional primary productivity and rates of carbon sequestration, the fate of anthropogenic materials released to the coastal environment, as well as its effect...

جنیدی جعفری, احمد, دولتی, محسن, رضایی کلانتری, روشنک, کرمانی, مجید,

Background: Air pollution, especially the phenomenon of dust and particulate matter can cause mortality of many civilians, and causes various diseases including cardiovascular and respiratory diseases. One of the major pollutants in the air is particulate matter that concentration has increased over recent years. So, present study with aim of Quantification Health Endpoints Attributed to partic...

2011
H. M. Amos D. J. Jacob C. D. Holmes J. A. Fisher Q. Wang R. M. Yantosca E. S. Corbitt E. Galarneau A. P. Rutter M. S. Gustin A. Steffen J. J. Schauer J. A. Graydon

Atmospheric deposition of Hg(II) represents a major input of mercury to surface environments. The phase of Hg(II) (gas or particle) has important implications for deposition. We use long-term observations of reactive gaseous mercury (RGM, the gaseous component of Hg(II)), particle-bound mercury (PBM, the particulate component of Hg(II)), fine particulate matter (PM2.5), and temperature (T ) at ...

2017

We characterize a representative haze event from a series of periodic particulate matter (PM) episodes that occurred in Shanghai during winter 2014. Particle size distribution, hygroscopicity, effective density and effective density single particle mass spectrometry were measured determined online, along with offline analysis of water-soluble inorganic ions and single particle mass spectrometry...

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