Topic
Air pollutant concentrations
About: Air pollutant concentrations is a research topic. Over the lifetime, 1652 publications have been published within this topic receiving 36138 citations.
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17 citations
29 May 2015
TL;DR: In this paper, the Clean Air Act and its subsequent amendments in 1977 and 1990 evolved from the Air Pollution Control Act on 1955, which was originally proposed by the United States Environmental Protection Agency (US EPA).
Abstract: This page describes how the Clean Air Act and its subsequent amendments in 1977 and 1990 evolved from the Air Pollution Control Act on 1955
17 citations
TL;DR: In this article, the influence of control measures on levels of air pollution was estimated with an integrated measurement-emission-modeling method, and the authors concluded that a synergistic emission reduction plan between adjacent areas with local pollution emission reductions as the core part should be established and strengthen the regional joint control mechanism.
Abstract: . Heavy haze usually occurs in winter in eastern China. To control
the severe air pollution during the season, comprehensive regional
joint-control strategies were implemented throughout a campaign. To evaluate
the effectiveness of these strategies and to provide some insights into
strengthening the regional joint-control mechanism, the influence of control
measures on levels of air pollution was estimated with an integrated
measurement-emission-modeling method. To determine the influence of
meteorological conditions, and the control measures on the air quality, in a
comprehensive study, the 2nd World Internet Conference was held during
16–18 December 2015 in Jiaxing City, Zhejiang province, in
the Yangtze River Delta (YRD) region. We first analyzed the air quality
changes during four meteorological regimes and then compared the air
pollutant concentrations before, during, and after the regulation under
static meteorological conditions. Next, we conducted modeling scenarios to
quantify the effects caused due to the air pollution control measures. We
found that total emissions of SO2 , NOx , PM2.5 , and volatile organic compounds (VOCs) in
Jiaxing were reduced by 56 %, 58 %, 64 %, and 80 %, respectively,
while total emission reductions of SO2 , NOx , PM2.5 , and VOCs
over the YRD region are estimated to be 10 %, 9 %, 10 %, and 11 %,
respectively. Modeling results suggest that during the campaign from
8 to 18 December, PM2.5 daily average concentrations decreased
by 10 µ g m −3 with an average decrease of 14.6 %. Our implemented
optimization analysis compared with previous studies also reveals that local
emission reductions play a key role in air quality improvement, although it
shall be supplemented by regional linkage. In terms of regional joint
control, implementing pollution channel control 48 h before the event is
of most benefit in getting similar results. Therefore, it is recommended
that a synergistic emission reduction plan between adjacent areas with local
pollution emission reductions as the core part should be established and
strengthened, and emission reduction plans for different types of pollution
through a stronger regional linkage should be reserved.
17 citations
TL;DR: Wang et al. as mentioned in this paper examined spatiotemporal variations of SO2, CO, NO2, O3, PM2.5, and PM10 concentrations and their associated sources in three provincial capitals of northern China from 2014 to 2015 to reveal the association between heating seasons and criteria air pollutants.
17 citations
TL;DR: Old and newly suggested methods to predict pollen and air pollutant concentrations in the air are reviewed and an allergy risk concept is proposed, which combines the pollen and pollution information and transforms it into a qualitative risk index.
Abstract: This review analyzes the state and recent progress in the field of information support for pollen allergy sufferers. For decades, information available for the patients and allergologists consisted of pollen counts, which are vital but insufficient. New technology paves the way to substantial increase in amount and diversity of the data. This paper reviews old and newly suggested methods to predict pollen and air pollutant concentrations in the air and proposes an allergy risk concept, which combines the pollen and pollution information and transforms it into a qualitative risk index. This new index is available in an app (Mobile Airways Sentinel NetworK-air) that was developed in the frame of the European Union grant Impact of Air POLLution on sleep, Asthma and Rhinitis (a project of European Institute of Innovation and Technology-Health). On-going transformation of the pollen allergy information support is based on new technological solutions for pollen and air quality monitoring and predictions. The new information-technology and artificial-intelligence-based solutions help to convert this information into easy-to-use services for both medical practitioners and allergy sufferers.
16 citations