Exposure to particulate matter (PM) in ambient air has been shown to lead to adverse health consequences. Six size fractions of PM with aerodynamic diameter smaller than 10μm (PM10) and gas phase were collected at six localities with different major pollution sources. Extracts of samples were assessed for AhR-mediated toxicity, (anti-)estrogenicity, (anti-)androgenicity and genotoxicity. The bi...

The high frequency of new particle formation (NPF) events observed under polluted atmospheric conditions is still poorly understood. To improve our understanding NPF and its effects, the number size distribution (3–1000 nm) submicron chemical composition were measured from 4 November 2017 to 17 January 2018 in suburban Beijing. During this intense campaign, 22 identified with a 29%, including 1...

Aerosols have a large potential to influence climate through their effects on the microphysics and optical properties of clouds and, hence, on the Earth’s radiation budget. Aerosol–cloud interactions have been intensively studied in polluted air, but the possibility that the marine biosphere plays an important role in regulating cloud brightness in the pristine oceanic atmosphere remains largel...

In this paper, we studied the frequency of occurrence and shortwave direct radiative effects (DREs) of abovecloud aerosols (ACAs) over global oceans using 8 years (2007–2014) of collocated CALIOP and MODIS observations. Similar to previous work, we found high ACA occurrence in four regions: southeastern (SE) Atlantic region, where ACAs are mostly light-absorbing aerosols, i.e., smoke and pollut...

In January 2013, North China Plain experienced several serious haze events. Cimel sunphotometer measurements at seven sites over rural, suburban and urban regions of North China Plain from 1 to 30 January 2013 were used to further our understanding of spatial-temporal variation of aerosol optical parameters and aerosol radiative forcing (ARF). It was found that Aerosol Optical Depth at 500 nm (...

Analytical studies of the environment have dealt primarily with toxic materials that may affect the health of man. Studies may also be made to evaluate nuisance effects and economic factors associated with corrosion, staining and damage to plant and animal life. It is important to note that many so-called pollutants are also essential trace elements. Analytical studies of the environment, there...

Mercury (Hg) is a global and widely distributed heavy metal pollutant. can affect human health as well the of ecosystems poses ecological risks. The subjects this study are three types grassland in Beidianzi region, Songnen Plains, Northeastern China, characterized by different degrees degradation. mercury content levels atmosphere, soil, forage grass on grasslands were determined. In addition,...

BACKGROUND Two-thirds of complaints received by the Hong Kong Environmental Protection Department in 1988 were related to poor air quality. In July 1990 legislation was implemented to reduce fuel sulphur levels. The intervention led to a reduction in respiratory symptoms and bronchial hyperresponsiveness of primary school children. The objectives of this study were to investigate the difference...

According to the data in May, September and October 1993, variation range of Cd content water body Jiaozhou Bay was 0.07-0.23μg/L, which conforms national quality standard Class I. It indicated that October, entire area not contaminated by content. In waters 0.09-0.18μg/L. coastal north Bay, reached a relatively high value, 0.18μg/L. September, 0.07-0.23μg/L. east highest 0.23μg/L. 0.08-0.18μg/...

We report time-series data collected over two years for delta18O, delta2H, and Ca, Mg, K, and Cl, concentrations for 10 ponds in, and upflow of, an As-polluted region of southern West Bengal. We compare the compositions of As-polluted groundwaters from wells with the compositions of waters in ponds upflow, and within the range of influence, of the wells. Conservative tracers (delta18O, delta2H,...