Water-soluble organic matter

Hernandez D, Fernandez JM, Plaza C, Polo A (2007) Water-soluble organic matter and biological activity of a degraded soil amended with pig slurry. Sci Total Environ 378 101-103... [Pg.227]

Bykova, E. L., Nikitina, I. B., Water-Soluble Organic Matter in Ground-... [Pg.67]

Chemistry of Water-Soluble Organic Matter (WSOM) 467... [Pg.451]

Chemical oxidation reactions and radical-induced hydrophobic-to-hydrophilic aging processes tend to increase the water solubility of OAs and, therefore, are thought to enhance the activity of atmospheric OAs as cloud condensation nuclei (CCN). As discussed by Gysel et al. (2004), at 75-90% of relative humidity (RH) the inorganic fraction dominates the water uptake (59-80%). Nevertheless, under the same conditions of RH, between 20% and 40% of total particulate water is associated with water-soluble organic matter. More data concerning the multiphase aerosol and cloud processes, as well as the chemical reactivity of carbonaceous aerosol components, have been compiled in the reviews of Jacobson et al. (2000), Kanakidou et al. (2005), and Poschl (2005) (and references therein). [Pg.462]

Wet deposition processes depend mostly on microphysical properties of the aerosol, cloud formation, conversion of cloud droplets into rain drops, sedimentation, and evaporation of rain (Kanakidou et al., 2005). Recently, Gysel et al. (2004) discussed the deliquescence properties of water-soluble organic matter and how they affect the hygroscopic growth of atmospheric OAs. Depending on the chemical... [Pg.462]

Duarte, R. M. B. O., Pio, C. A., and Duarte, A. C. (2005). Spectroscopic study of the water-soluble organic matter isolated from atmospheric aerosols collected under different atmospheric conditions. Anal. Chim. Acta 530,7-14. [Pg.479]

Kiss, G., Varga, B., Galambos, I., and Ganszky, I. (2002). Characterisation of water-soluble organic matter isolated from atmospheric fine aerosol. J. Geophys. Res. 107, D21, 8339, doi 10.1029/2001JD000603. [Pg.480]

Hydride generation AAS is a well-established technique for the determination of selenium because of its selectivity and sensitivity. The detection limits are improved by concentrating the hydride prior to the transfer to the spectrometer. Cryogenic condensation in a U-tube at liquid nitrogen temperature is a preferred method of pre-concentration. However, selenium hydride is formed essentially only from Se. The selectivity for Se has been combined with various chemical preparation steps to determine the sum of SeIV and Se and the total selenium content of samples. Se concentrations are measured by the difference between the (Se + Se ) and Se contents. The difference between total selenium and (Se + Se ) contents represents the concentrations of Se° and Se2- species. These methods have been used for determinations of selenium species in natural waters. Soluble organic matter in some groundwater samples interferes with the hydride generation determination of selenium. Isolation of humic substances by their adsorption on resins has overcome this problem. [Pg.427]

R331 R. M. B. O. Duarte and A. C. Duarte, A Critical Review of Advanced Analytical Techniques for Water-Soluble Organic Matter from Atmospheric Aerosols , TrAC, Trend. Anal. Chem., 2011, 30, 1659. [Pg.45]

Varga B, Kiss G, Gausky I, Gelencser A, Krivacsy Z (2001) Isolation of water-soluble organic matter from atmospheric aerosol. Talanta 55 561-572... [Pg.208]

Bykova EL, Nikitina JB (1964) Water-soluble organic matter of groundwater and surface water of south Yakutia. Geokhimiya 12 1298-1304 (in Russian)... [Pg.18]

Ohno, T., Amirbahman, A., and Bro, R. (2008). Parallel factor analysis of excitation-emission matrix fluorescence spectra of water soluble organic matter as basis for the determination of conditional metal binding parameters. Environ. Sci. TechnoL, 42, 186-192. [Pg.71]

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