نتایج جستجو برای: passive samplers
تعداد نتایج: 72217 فیلتر نتایج به سال:
Abstract Acetic acid and formic are volatile pollutants leading to degradation of some heritage materials. They usually determined in museum environments with various types passive samplers. In this work, SKC UMEx 200 samplers, originally intended for sampling $$\hbox {NO}_{2}$$ NO 2 </m...
Pesticide volatilisation and subsequent vapour drift reduce a pesticide's efficiency and contribute to environmental contamination. High-volume air samplers (HVSs) are often used to measure pesticide concentrations in air but these samplers are expensive to purchase and require network electricity, limiting the number and type of sites where they can be deployed. The flow-through sampler (FTS) ...
This work examines the effects of two problematic trends in diesel passenger car emissions—increasing NO2/NOx ratio by conversion NO into NO2 catalysts and a disparity between emission limit actual emissions everyday driving—on ambient air quality Prague. concentrations were measured 104 membrane-closed Palmes passive samplers at 65 locations Prague March–April September–October 2019. city stat...
Epidemiological data suggest that there has been and may continue to be a significant risk to maintenance workers, who through their work may disturb asbestos-containing materials (ACM). The sampling and assessment of maintenance workers' exposure is a particular problem because they may not know that they are working with ACM. A strategy to monitor their true exposure has been developed and ap...
Short-chain chlorinated paraffins (SCCPs) are high-volume chemicals raising concerns because of their classification as priority hazardous substances by the European Water Framework Directive (WFD) and recent inclusion in persistent organic pollutants' (POPs) list Stockholm convention. As this group cover up to 5000 isomers, measurement is still challenging. Hence SCCPs occurrence environment p...
Background & Objectives: Air pollution is one of the most important environmental problems in large cities. Aromatic hydrocarbons as volatile organic compounds (VOCs) have been listed in Hazardous Air Pollutants (HAPs) by Environmental Protection Agencies (EPA). The aim of this study is Passive sampling and determination of aromatic hydrocarbons (AHs) toluene, xylene and ethylbenzene using ...
The Radiello Passive Air Sampler is one of the latest innovations developed for the sampling of pollutants in the air by passive headspace. It has been reported that its properties allow an enhanced sensitivity, reproducibility and adsorption capacity. It therefore appears to be of interest in the extraction of potential residues of ignitable liquids present in fire debris when arson is suspect...
The potential of passive air sampling devices (polyurethane foam disks) to assess the influence of local sources on the quality of the surrounding environment was investigated. DEZA Valasske Mezirici, a coal tar and mixed tar oils processing plant, and Spolana Neratovice, a chemical factory with the history of high production of organochlorinated pesticides (OCPs), were selected as the point so...
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