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[Wastewater purification efficiency appreciation using a rapid microbiological test]
2001
Tibru, I. | Nichita, I. | Savescu, E. | Mircov, V.D. (Facultatea de Medicina Veterinara, Timisoara (Romania))
The surface water quality preservation is dependent on the used technology of wastewater purification, waters that are thrown in natural streams and on the used methods for the purification efficiency evaluation. The field microbiological test (FMT) is made of a concentrated culture medium that allows the evidencing of enterobacteria below values of 100/cubic cm, therefore it was used for sanitary ranking of treated wastewaters at the sewage treatment plant of Timisoara (Romania). We noted a 100% correlation between FMT and the official coliform bacteria test.
Show more [+] Less [-]Selected Issues in Environmental Economics
2001
Sarhan, Alaa A. (Egyptian Forum on Environment and Sustainable Development, Cairo (Egypt))
Abatement of Polar Organics in Natural Wetlands and Rivers. Analitycal Methods
2001
Headley, J. (National Water Research Centre, Cairo (Egypt)) | Tawfic, T. A.
Here are described three innovative and complementary methods for the characterization of polar organics in natural waters. A simple and rugged GC/MS procedure is shown to be well suited for the determination of sulfolane, (tetrahydrothiophene 1,1-dioxide, C4H8O2S; a water miscible chemical used in the sweetening of sour-gas) a compound that is known to be readily sequested by wetland vegetation. In contrast, LC/MS employing electrospray ionization is ideal for the quantification of two other classes of polar chemicals, namely (a) alkanolamines in vegetation and (b) mixtures of naphthenic acids in natural waters in oilsands regions of Northern Alberta, Canada. The modem techniques take advantage of quite simple extraction procedures, with no need for derivatization steps and exploit the polar nature of the chemicals to separate the analytes from high back ground non-polar components. For the alkanolamines, MS/MS is a prerequisite for obtaining diagnostic product ion scans of the molecular ion formed under soft-ionization conditions.
Show more [+] Less [-]Water Quality and Hydrology for Lakes
2001
El-Zawahry, A.
Water Quality Database Management
2001
Salah, A. M. (Central Laboratory for Environmental Quality Monitoring, Cairo (Egypt)) | Tawfic, T. A.
Control of Water Pollution from Agriculture
2001
Hamdy, A. (Centre International de Hautes Etudes Agronomiques Méditerranéennes, Bari (Italy). Institut Agronomique Méditerranéen)
Water Quality Modelling
2001
El-Sayed, A. (Drainage Research Institute, Open Drainage Dept.)
Application of Geochemical Models to Study the Environmental Impacts of Discharged Industrial Effluents on Water Quality
2001
Tawfic, T. A. (Central Laboratory for Environmental Quality Monitoring, Cairo (Egypt))
Microbiological Examination of Water
2001
Ezzat, S. M. (Central Laboratory for Environmental Quality Monitoring, Cairo (Egypt)) | Tawfic, T. A.
Water Quality Control and Assurance
2001
El-Tawwab, Amr R. (Central Laboratory for Environmental Quality Monitoring, Cairo (Egypt)) | Tawfic, T. A.
