scholarly journals Residential water-soluble organic gases: chemical characterization of a substantial contributor to indoor exposures

2019 ◽  
Vol 21 (8) ◽  
pp. 1364-1373 ◽  
Author(s):  
Sara M. Duncan ◽  
Kenneth Sexton ◽  
Leonard Collins ◽  
Barbara J. Turpin
Keyword(s):  
Organic Acids ◽  
Indoor Air ◽  
Chemical Characterization ◽  
Water Soluble ◽  
Organic Gases ◽  
Residential Water

Characterization of residential indoor air showed that organic acids make up a significant portion of water-soluble organic gases.

Olfactory and Chemical Characterization of Indoor Air-Towards a Psychophysical Model for Air Quality

1981 ◽  
Author(s):  
Birgitta Berglund ◽  
Ulf Berglund ◽  
Thomas Lindvall ◽  
Helene Nicander-Bredberg
Keyword(s):  
Air Quality ◽  
Indoor Air ◽  
Chemical Characterization

Chemical characterization of milk concentrated by ultrafiltration

1984 ◽  
Vol 51 (2) ◽  
pp. 267-278 ◽  
Author(s):  
Margaret L. Green ◽  
K. John Scott ◽  
Malcolm Anderson ◽  
Mary C. A. Griffin ◽  
Frank A. Griffin
Keyword(s):  
Chemical Characterization ◽  
Water Soluble ◽  
Casein Micelles ◽  
Total N ◽  
Globule Size ◽  
Whole Milk ◽  
Differential Retention ◽  
Fat Globule ◽  
Process Damage

SummaryWhole milks concentrated 1·5–4-fold and acidified and citrated milks concentrated 2·8-fold by ultrafiltration at 50 °C were analysed for chemical changes relevant to further processing, storage or nutrition. Fat and protein were entirely retained in the concentrate. The retention of water-soluble vitamins, Ca, Mg, phosphate and trace minerals depended on the proportion bound to the protein. Ascorbic acid was rapidly destroyed during concentration. Because of the differential retention of nitrogenous components, protein comprised a progressively higher proportion of the total N as the milk became more concentrated. No denaturation of whey protein or disruption of casein micelles was detected during concentration of whole milk, but some solubilization of the casein occurred after citration. Reduction of fat globule size occurred early in the concentration process, damage to the fat globule membrane was indicated and the milk became more susceptible to lipolysis. Apart from a tendency for preacidified or precitrated concentrates to gel, no change in the susceptibility of the milks to heat damage was detected.

Chemical characterization of fine aerosols in respect to water-soluble ions at the eastern Middle Adriatic coast

2020 ◽  
Vol 27 (10) ◽  
pp. 10249-10264 ◽  
Author(s):  
Ana Cvitešić Kušan ◽  
Ana Kroflič ◽  
Irena Grgić ◽  
Irena Ciglenečki ◽  
Sanja Frka
Keyword(s):  
Chemical Characterization ◽  
Water Soluble ◽  
Soluble Ions ◽  
Water Soluble Ions ◽  
Adriatic Coast

scholarly journals On the Water-Soluble Organic Matter in Inhalable Air Particles: Why Should Outdoor Experience Motivate Indoor Studies?

2021 ◽  
Vol 11 (21) ◽  
pp. 9917
Author(s):  
Regina M. B. O. Duarte ◽  
Armando C. Duarte
Keyword(s):  
Organic Matter ◽  
Indoor Air ◽  
Chemical Characterization ◽  
Water Soluble ◽  
Future Research ◽  
Soluble Organic Matter ◽  
Current State ◽  
Challenges And Opportunities ◽  
Outdoor Experience

The current understanding of water-soluble organic aerosol (OA) composition, sources, transformations, and effects is still limited to outdoor scenarios. However, the OA is also an important component of particulate matter indoors, whose complexity impairs a full structural and molecular identification. The current limited knowledge on indoor OA, and particularly on its water-soluble organic matter (WSOM) fraction is the basis of this feature paper. Inspired by studies on outdoor OA, this paper discusses and prioritizes issues related to indoor water-soluble OA and their effects on human health, providing a basis for future research in the field. The following three main topics are addressed: (1) what is known about the origin, mass contribution, and health effects of WSOM in outdoor air particles; (2) the current state-of-the-art on the WSOM in indoor air particles, the main challenges and opportunities for its chemical characterization and cytotoxicity evaluation; and (3) why the aerosol WSOM should be considered in future indoor air quality studies. While challenging, studies on the WSOM fraction in air particles are highly necessary to fully understand its origin, fate, toxicity, and long-term risks indoors.

Chemical characterization of water-soluble pectin in papaya fruit

1991 ◽  
Vol 15 (1) ◽  
pp. 67-78 ◽  
Author(s):  
E. Westerlund ◽  
P. Åman ◽  
R. Andersson ◽  
R.E. Andersson ◽  
S.M.M. Rahman
Keyword(s):  
Chemical Characterization ◽  
Water Soluble
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