Characteristics and sources of volatile organic compounds (VOCs) were investigated with highly time-resolved measurements by a proton-transfer-reaction time-of-flight mass spectrometer (PTR-ToF-MS) at an urban site in Beijing winter 2017. During the measurement period, high mixing ratios VOCs (48.9 ppbv) trace gases observed, alternating episodes strong haze pollution clean air. Ten VOC familie...

Road dust is one of the biggest contributors to airborne particulate matter (PM) in many urban regions. Due inherent heterogeneity road dust, it important that its sources are identified and mitigated. Multivariate receptor models used for source apportionment PM cities. In recent years, these finding more applications outside scope apportionment. this study, four multivariate (Unmix, Positive ...

Wildfires can have major impacts on water scarcity and quality linked to off-site transfer of polluting ash nutrients. Understanding sediment sources in burnt landscapes help develop mitigation strategies, especially catchments planted with introduced species that are prone fire. We investigated activated by post-fire rainfall a small-forested catchment was impacted severe wildfire. The aim use...

INTRODUCTION Human exposure to particulate matter (PM) was determined in Urban Environment of Delhi, India. Samples were collected using eight stages impactor (Marple Cascade Impactor) at five sites during August to October 2011. Three samples were collected from each site; samples were analyzed -3 in eight size ranges gravimetrically and chemically (for metals). Maximum (985 μg m ) exposure to...