scholarly journals Solubility properties of surfactants in atmospheric aerosol and cloud/fog water samples

2003 ◽  
Vol 108 (D21) ◽  
Author(s):  
S. Decesari ◽  
M. C. Facchini ◽  
M. Mircea ◽  
F. Cavalli ◽  
S. Fuzzi
Keyword(s):  
Water Samples ◽  
Atmospheric Aerosol ◽  
Fog Water

scholarly journals Reconstructing Elemental Carbon Long-Term Trend in the Po Valley (Italy) from Fog Water Samples

Atmosphere ◽  
2020 ◽  
Vol 11 (6) ◽  
pp. 580
Author(s):  
Stefania Gilardoni ◽  
Leone Tarozzi ◽  
Silvia Sandrini ◽  
Pierina Ielpo ◽  
Daniele Contini ◽  
...  
Keyword(s):  
Air Quality ◽  
Water Samples ◽  
Atmospheric Aerosol ◽  
Elemental Carbon ◽  
Winter Season ◽  
Reduction Rate ◽  
Anthropogenic Sources ◽  
Fog Water ◽  
Po Valley

Elemental carbon (EC), a ubiquitous component of fine atmospheric aerosol derived from incomplete combustion, is an important player for both climate change and air quality deterioration. Several policy measures have been implemented over the last decades to reduce EC emissions from anthropogenic sources, but still, long-term EC measurements to verify the efficacy of such measurements are limited. In this study, we analyze the concentration of EC suspended in fog water samples, collected over the period 1997–2016 in a rural background site of the southern Po Valley. The comparison between EC in fog water and EC atmospheric aerosol concentration measured since 2012 allowed us to reconstruct EC atmospheric concentration from fog water chemical composition dating back to 1997. The results agree with the EC atmospheric observations performed at the European Monitoring and Evaluation Program (EMEP) station of Ispra in the northern part of the Po Valley since 2002, and confirm that the Po Valley is a pollution hotspot, not only in urban areas, but also in rural locations. The reconstructed trend over the period 1997–2016 indicates that EC concentration during the winter season has decreased on average by 4% per year, in agreement with the emission reduction rate, confirming the effectiveness of air quality measures implemented during the past 20 years.

scholarly journals Soluble and insoluble pollutants in fog and rime water samples

2010 ◽  
Vol 4 (Special Issue 2) ◽  
pp. S123-S130 ◽  
Author(s):  
J. Fišák ◽  
V. Stoyanova ◽  
P. Chaloupecký ◽  
D. Řezáčová ◽  
T. Tsacheva ◽  
...  
Keyword(s):  
Particle Size ◽  
Water Samples ◽  
Fog Water ◽  
Particle Transfer ◽  
Pollutant Concentrations ◽  
Insoluble Particles ◽  
Meteorological Observatory ◽  
Overall Evaluation ◽  
The Mean ◽  
Insoluble Compounds

Fog and rime water samples were collected at the meteorological observatory Milešovka in February and June 2006. In the samples, the soluble and insoluble pollutant concentrations were evaluated separately and the differences between the fog and rime water samples were studied. The comparison of the fog and rime water samples indicates that the mean soluble component concentrations in the air appear to be higher during the rime events than during the fog events at Milešovka. We recorded a larger mean particle size of the insoluble compounds in the fog water samples than in those of rime water. Some elements contained in the insoluble particles like Ca, Cl, C, Cu, Ag, were present largely in fog whole others, like Fe, Al, Si, Ti, prevailed in rime. In addition to the overall evaluation, the backward air trajectories were determined for each fog/rime event and the concentrations are presented as depending on the direction of the air particle transfer.

Determination of aldehydes and acetone in fog water samples via online concentration and HPLC

2015 ◽  
Vol 72 (2) ◽  
pp. 165-182 ◽  
Author(s):  
Aubrey A. Heath ◽  
Mickael Vaïtilingom ◽  
Franz S. Ehrenhauser ◽  
Lillian E. Cormier ◽  
Cara A. Leger ◽  
...  
Keyword(s):  
Water Samples ◽  
Fog Water

Synoptic Situations and Pollutant Concentrations in Fog Water Samples from the Milešovka Mt.

2004 ◽  
Vol 48 (2) ◽  
pp. 469-481 ◽  
Author(s):  
J. Fišák ◽  
D. Řezáčov ◽  
V. Weignerová ◽  
M. Tesař
Keyword(s):  
Water Samples ◽  
Fog Water ◽  
Pollutant Concentrations

Pollutant Identification by Selected Area Electron Diffraction

1974 ◽  
Vol 32 ◽  
pp. 532-533
Author(s):  
R. E. Ferrell ◽  
G. G. Paulson ◽  
C. W. Walker
Keyword(s):  
Thermal Treatment ◽  
Electron Diffraction ◽  
Sample Preparation ◽  
Crystal Structures ◽  
Water Samples ◽  
Environmental Samples ◽  
Short Review ◽  
Selected Area Electron Diffraction ◽  
Multiple Component

Selected area electron diffraction (SAD) has been used successfully to determine crystal structures, identify traces of minerals in rocks, and characterize the phases formed during thermal treatment of micron-sized particles. There is an increased interest in the method because it has the potential capability of identifying micron-sized pollutants in air and water samples. This paper is a short review of the theory behind SAD and a discussion of the sample preparation employed for the analysis of multiple component environmental samples.

Enumeration and Identification of Asbestos Fibres in Water

1974 ◽  
Vol 32 ◽  
pp. 526-527 ◽  
Author(s):  
O. Mudroch ◽  
J. R. Kramer
Keyword(s):  
Water Supply ◽  
Water Samples ◽  
Drainage Basin ◽  
Lake Superior ◽  
Research Work ◽  
List Type ◽  
The West ◽  
Asbestos Fibre ◽  
Amphibole Asbestos

Approximately 60,000 tons per day of waste from taconite mining, tailing, are added to the west arm of Lake Superior at Silver Bay. Tailings contain nearly the same amount of quartz and amphibole asbestos, cummingtonite and actinolite in fibrous form. Cummingtonite fibres from 0.01μm in length have been found in the water supply for Minnesota municipalities.The purpose of the research work was to develop a method for asbestos fibre counts and identification in water and apply it for the enumeration of fibres in water samples collected(a) at various stations in Lake Superior at two depth: lm and at the bottom.(b) from various rivers in Lake Superior Drainage Basin.

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