NDLI: Estimation of air quality degradation due to Saharan dust at Nouakchott, Mauritania, from horizontal visibility data

Content Provider	Springer Nature Link
Author	Ozer, Pierre Laghdaf, Mohamed Béchir Ould Mohamed Lemine, Sidi Ould Mohamed Gassani, Jean
Copyright Year	2006
Abstract	It is now irrefutable that air pollution caused by large amounts of Total Suspended Particulates (TSP) and respiratory particulates or Particulate Matter less than 10 μm in aerodynamic diameter (PM$_{10}$) has numerous undesired consequences on human health. Air quality degradation far from the African continent, in the US and in Europe, caused by high concentrations of African dust, is seen as a major threat even though most of these countries are very distant from the Sahara. Surprisingly, no estimates of TSP or PM$_{10}$ levels near the Saharan dust source are available. Based on horizontal visibility observations which are reduced by the presence of dust in the atmosphere, TSP and PM$_{10}$ levels are estimated throughout the year 2000 at Nouakchott-Airport, Mauritania, using relations found in the literature. It appears that concentrations of particles are significant both in terms magnitude and frequency, as the 24-hour PM$_{10}$ thresholds established by the US EPA National Ambient Air Quality Standards and the EU Limits Values for Air Quality were exceeded 86 and 137 times, respectively. The average annual concentration is far above air quality standards and estimated at 159 μg m$^{−3}$ for TSP and 108 μg m$^{−3}$ for PM$_{10}$. These very high particulate levels are likely to represent an important public health hazard and should be considered as a major environmental risk.
Starting Page	79
Ending Page	87
Page Count	9
File Format	PDF
ISSN	00496979
Journal	Water, Air, and Soil Pollution
Volume Number	178
Issue Number	1-4
e-ISSN	15732932
Language	English
Publisher	Springer Netherlands
Publisher Date	2006-09-22
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Air quality TSP PM$_{10}$ Dust storms Horizontal visibility Sahara Mauritania Hydrogeology Terrestrial Pollution Waste Water Technology Water Pollution Control Water Management Aquatic Pollution Atmospheric Protection/Air Quality Control/Air Pollution Environment
Content Type	Text
Resource Type	Article
Subject	Ecological Modeling Environmental Chemistry Pollution Environmental Engineering Water Science and Technology

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