OBJECTIVES This study was conducted to assess the size characteristics of particulate matter (PM) generated during waste collection and sorting, and to assess the effect of the type of waste-handling activity on levels of coarse and fine PM. METHODS A portable aerosol spectrometer calibrated to 1.2 //min was used to monitor PM generated during four types of waste-handling activities. The type...

The Pb-monitoring program was extended for 6 years from 2002 to 2007 at 17 representative urban sites (6 traffic, 5 industrial, and 6 residential sites), and 3 suburban sites to assess the lead pollution in fine particulate matter (PM2.5) after phasing out leaded gasoline in Shanghai. Compared with Pb levels reported in other places, the Pb pollution in Shanghai is still serious after phasing o...

The abundance of airborne particulate matter with an aerodynamic equivalent diameter of 2.5 µm or less (PM2.5) is a significant environmental and health issue. Many tools have been used to examine the relationship between PM2.5 abundance and meteorological variables, but some of the relationships are nonlinear, non-Gaussian, and even unknown. Machine learning provides a broad range of practical...

8 High concentrations of airborne particulate matter in factories can cause serious health problems 9 for workers. One significant reason for these high concentrations is the poor performance of the 10 ventilation systems in workplaces. This investigation developed a strategy that combines 11 computational fluid dynamics (CFD) simulations and on-site measurements to study and improve 12 the ven...

Compared to conventional cage systems for laying hens, aviary housing systems generally have much higher concentrations of airborne dust and bacteria due to generation of bioaerosols by the hens from their litter access. Hence solutions to reduce these health-degrading agents are required to safeguard the indoor environment in such systems. Spraying slightly acidic electrolyzed water (SAEW) has...

This study aims to assess the long-term trend of fine particles (PM2.5; ≤2.5 μm) at two urban sites of Lahore during 2007-2011. These sites represent two distinct areas: commercial (Townhall) and residential cum industrial (Township). The highest daily mean concentrations of PM2.5 were noted as 389 and 354 μg m-3 at the Townhall and Township sites, respectively. As expected, the annual seasonal...

The ambient air quality monitoring network involves measurement of a number of air pollutants. A variety of methods exist to measure particulate matter in air. This study evaluates the effects of particulate air pollution associated short-term exposure of particulate matter (PM10 and PM2.5) in Diwali festival. Fireworks display during festive celebrations can cause acute short term air pollutio...

BACKGROUND Epidemiologic and health impact studies of fine particulate matter with diameter < 2.5 microm (PM2.5) are limited by the lack of monitoring data, especially in developing countries. Satellite observations offer valuable global information about PM2.5 concentrations. OBJECTIVE In this study, we developed a technique for estimating surface PM2.5 concentrations from satellite observat...

With the increasing awareness of the health impacts of particulate matter, there is a growing need to comprehend the spatial and temporal variations of the global abundance of ground level airborne particulate matter with a diameter of 2.5 microns or less (PM2.5). Here we use a suite of remote sensing and meteorological data products together with ground-based observations of particulate matter...

This paper proposes a method for estimating emissions of carbon dioxide (CO2) and particulate matter (PM) from ships using Automatic Identification System (AIS) data. The method can be summarized in three steps : 1) capture of AIS data, 2) estimation of ships resistance, propulsion power, engine power and fuel consumption, 3) estimation of CO2 and PM emissions based on fuel consumption. The met...