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  • Digitale Medien  (5)
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  • Digitale Medien  (5)
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  • 1
    Digitale Medien
    Digitale Medien
    Determination of Total Sulfur in Water by Neutron Activation Analysis. (1963)
    s.l. : American Chemical Society
    Analytical chemistry 35 (1963), S. 768-768 
    Details
    ISSN: 1520-6882
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ac60199a033
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  • 2
    Digitale Medien
    Digitale Medien
    Simultaneous Determination of Sulfur and Phosphorus in Water by Neutron Activation Analysis. (1964)
    s.l. : American Chemical Society
    Analytical chemistry 36 (1964), S. 665-666 
    Details
    ISSN: 1520-6882
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ac60209a036
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  • 3
    Digitale Medien
    Digitale Medien
    Apparatus for Continuous Extraction of Nonpolar Compounds from Water Applied to Determination of Chlorinated Pesticides and Intermediates. (1964)
    s.l. : American Chemical Society
    Analytical chemistry 36 (1964), S. 1340-1343 
    Details
    ISSN: 1520-6882
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ac60213a046
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  • 4
    Digitale Medien
    Digitale Medien
    Removal of ABS and Other Sewage Components by Infiltration Through Soils (1966)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 4 (1966), S. 0 
    Details
    ISSN: 1745-6584
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Energietechnik , Geologie und Paläontologie
    Notizen: The nature and extent of movement of ABS (alkylben-zenesulfonate) and other sewage components through natural soils were studied in the laboratory and in the field north of Denver, Colorado. Small amounts of ABS and bacteria pass through soils and reach the zone of saturation, where they move laterally down-gradient several thousand feet. Total dissolved solids show little fluctuation during such movement, possibly because extracted solutes are replaced by other solutes leached from the soils during water infiltration.In laboratory studies Denver sewage-plant effluent was filtered through packed columns of 8 types of soils. ABS was not significantly removed by most of the soils; how-ever, muck, greensand marl, and residual basalt soil ini-tially removed up to 94 percent of the ABS. Some ABS was removed only after development of bacterial slime on the soils; subsequent infiltration caused leaching of the slime and its adsorbed ABS and other constituents. All soils initially removed about 90 percent of the bacteria within a few feet of travel, but a small percentage passed through the soil. Bacterial clogging occurred quickly in the fine soils but only in modest amounts in the coarse sand, even after three months of flow.Field studies included analyses of river and irrigation water contaminated from a sewage-plant effluent, and well water from selected sites down-gradient between unlined irrigation ditches and the river. Concentrations of ABS and bacteria were significantly reduced during infiltration of irrigation ditch water to the water table. As noted in the laboratory the concentrations of both of these contaminants can be reduced through soil filtering action. In addition there may be some dilution of the infiltrate by the ground water. Dissolved solids showed practically no change between the ditches and the wells.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1745-6584.1966.tb01585.x
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  • 5
    Digitale Medien
    Digitale Medien
    Biodegradation of anionic and nonionic surfactants under aerobic and anaerobic conditionsPublication authorized by Director, U. S. Geological Survey, Washington 25, D. C. (1963)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 5 (1963), S. 367-384 
    Details
    ISSN: 0006-3592
    Schlagwort(e): Chemistry ; Biochemistry and Biotechnology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Because branched-chain alkyl benzene sulfonate (ABS) is well known to create water pollution problems in surface water and ground water, a study was made on the biodegradation of this surfactant along with other anionic and nonionic surfactants in detergents by water bacteria. Biodegradation was evaluated by the conventional river die-away test employing the methylene-blue method or surface-tension techniques as analytical tools. Under anaerobic conditions, sugar detergents (sucrose esters) seem to be an ultimate solution to water problems created by branched-chain ABS; in aerated water, straight-chain ABS, sulfo tallow methyl esters, and nonionic surfactants are preferable to branched-chain ABS to improve water problems.
    Zusätzliches Material: 10 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/bit.260050410
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