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The importance of total organic carbon and trihalomethane formation potential in monitoring of groundwater and surface water quality
1999
Ivancev-Tumbas, I. | Dalmacija, B. (Prirodno-matematicki fakultet, Novi Sad (Yugoslavia). Institut za hemiju)
Determination of total organic carbon content (TOC) and trihalomethane formation potential (THMFP) as well as correlation of those two parameters is recommended for monitoring of water bodies which are considered as drinking water resources. Those parameters would enable a categorization of water bodies from the protection point of view as well as from view of their usage as drinking water sources. Relationship between TOC and THMFP is dependent on the origin and the structure of organic matter in water. In this paper the correlation of TOC and THMFP is given for different kind of resources.
Mostrar más [+] Menos [-]Effects of ozone concentrations on biogenic volatile organic compounds emission in the Mediterranean region
1999
Penuelas, J. | Lluisa, J. | Gimeno, B.S. (Centre de Recerca Ecologica i Aplicacions Forestals (CREAF), Facultat de Ciencies, Universitat Autonoma de Barcelona, 08193 Bellaterra, Barcelona (Spain))
Long-term desorption of trichloroethylene from flint clay using multiplexed optical detection
1999
Stager, M.P. | Perram, G.P. (Air Force Institute of Technology/ENP, Department of Engineering Physics, 2950 P Street, Bldg 640, Wright-Patterson Air Force Base, OH 45433-7765 (USA))
Persistent organic chemicals in the former Soviet Union
1999
Fedorov, L.A. (Union for Chemical Safety, 8-2-83 Profsojuznaja Str., 117292 Moscow (Russian Federation))
Determination of aliphatic lower amines in environmental samples
1999
Tsukioka, T. (Nagano-ken. Research Inst. for Health and Pollution (Japan))
A micro analytical method has been established for aliphatic lower primary and secondary amines in environmental water and sediment. Amines were distilled and allowed to react with benzenesulfonyl chloride under an alkaline condition. The derivatized compounds were extracted with benzene under an acidic condition and subjected to a determination by GC/MS. This method has been successfully applied for a simultaneous determination of primary and secondary amines with recovery over 80%, except for methylamine, and C.V. below 7%, except for methyl and dimethyl amines; moreover, the detection limit were 0.1 micro g/L for all of the amines determinated. This method is excelent also in sensitivity, is sufficiently applicable to environmental samples.
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