Your search found 12 records
1 Anna University, Madras. Center for Water Resources. 1984. Modernization of tank irrigation work done and studies. Madras, India: The University. 26p.
(Location: IWMI-HQ Call no: 631.7.7 G635 ANN Record No: H0230)
2 Katalin, K. H. 1990. Nitrogen migration in soils and water. In ICID, Fourteenth International Congress on Irrigation and Drainage, Rio de Janeiro, Brazil: Transactions. New Delhi, India: ICID. Vol.1A - Q42 (R1-R23):123-136.
(Location: IWMI-HQ Call no: ICID 631.7 G000 ICI Record No: H08718)
3 Sklash, M. G.; Mwangi, M. P. 1991. An isotopic study of groundwater supplies in the Eastern Province of Kenya. Journal of Hydrology, 128(1-4):257-275.
(Location: IWMI-HQ Call no: PER Record No: H09082)
4 Turtola, E.; Paajanen, A. 1995. Influence of improved subsurface drainage on phosphorus losses and nitrogen leaching from a heavy clay soil. Agricultural Water Management, 28(4):295-310.
Subsurface drainage ; Nitrogen ; Leaching ; Clay soils ; Erosion ; Waterlogging ; Runoff ; Soil properties ; Water analysis / Finland
(Location: IWMI-HQ Call no: PER Record No: H017775)
5 Bartram, J.; Ballance, R. (Eds.) 1996. Water quality monitoring: A practical guide to the design and implementation of freshwater quality studies and monitoring programmes. London, UK: E & FN Spon. xii, 383p.
Water quality ; Monitoring ; Design ; Water analysis ; Surface water ; Groundwater ; Water use ; Water pollution ; Public health ; Chemical control ; Biological control ; Hydrology ; Sedimentary materials ; Measurement
(Location: IWMI-HQ Call no: 333.91 G000 BAR Record No: H022853)
6 Rogers, P. 1997. Preparing for the future hydroeconomics: Getting water into national economic planning. In SIWI, Proceedings, Mar Del Plata 20 Year Anniversary Seminar - Water for the next 30 years - Averting the looming water crisis, Stockholm, August 16, 1997. Stockholm, Sweden: SIWI. pp.73-81.
(Location: IWMI-HQ Call no: 333.91 G000 SIW Record No: H034638)
7 Hirsch, R. M.; Slack, J. R.; Smith, R. A. 1982. Techniques of trend analysis for monthly water quality data. Water Resources Research, 18(1):107-121. [doi: https://doi.org/10.1029/WR018i001p00107]
Water quality ; Water analysis ; Hydrology ; Statistical methods ; Regression analysis ; Time series analysis / USA / Klamath River / California
(Location: IWMI-HQ Call no: P 7632 Record No: H039339)
(2.52 MB)
8 Hem, J. D. 1978. Study and interpretation of the chemical characteristics of natural water. 2nd ed. Washington, DC, USA: US Geological Survey. 363p. + fold. map. (Geological Survey Water Supply Paper 1473)
Water quality ; Chemical contamination ; Water resources ; Groundwater ; Sampling ; Water analysis ; Alkalinity ; Hydrology ; Water use
(Location: IWMI HQ Call no: 333.91 G000 HEM Record No: H043952)
(0.56 MB)
9 Yehia, M.; Baghdady, A.; Howari, F. M.; Awad, S.; Gad, A. 2017. Natural radioactivity and groundwater quality assessment in the northern area of the Western Desert of Egypt. Journal of Hydrology: Regional Studies, 12:331-344. [doi: https://doi.org/10.1016/j.ejrh.2017.06.002]
Groundwater assessment ; Water quality ; Chemical composition ; Deserts ; Water analysis ; Irrigation ; Domestic water ; Drinking water ; Chemicophysical properties ; Radioactivity ; Health hazards ; Radiation damage ; Metals ; Toxicity ; Hydrogeology / Egypt / Western Desert
(Location: IWMI HQ Call no: e-copy only Record No: H048296)
http://www.sciencedirect.com/science/article/pii/S2214581817300198/pdfft?md5=f35be392d885522b974103ccb1196ff7&pid=1-s2.0-S2214581817300198-main.pdf
https://vlibrary.iwmi.org/pdf/H048296.pdf
https://vlibrary.iwmi.org/pdf/H048296.pdf
(1.35 MB) (1.35 MB)
The chemical composition and natural radioactivity of the northern area of the western desert groundwater were determined to evaluate hydrogeochemical facies and assess groundwater quality for different uses. Many the groundwater samples belong to the Na+- Cl-, Na2SO4 - type, followed by Ca2+- Mg2+- Cl- type. Only a few samples are of the Na+- HCO3 - type. The spatial distributions of the major ions describe similar anomalies, with the highest concentrations found at the extreme northeastern margin of the oasis, as well as in its northern and northwestern parts. Fe is the most abundant toxic metal, followed by Cu and Mn. Anomalies of Cr, Ni and Zn are also detected. Rock/water interactions strongly affect the chemical composition of the groundwater. Dissolution and cation exchange are the main processes controlling the hydrogeochemistry. Most of the irrigation groundwater problems in the study area may be resolved using an effective drainage system. The estimated total annual dose due to ingestion of 238U, 232Th and 40K in groundwater samples reveals that the groundwater is safe for human consumption. However, the toxic metal content of the Bahariya groundwater exceeds the permissible levels for both irrigation and consumption, and the water must be filtered through suitable membranes to exclude these toxic metals. Regular monitoring of the quality of this water for drinking is strictly required.
10 Wrathall, D. J.; Van Den Hoek, J.; Walters, A.; Devenish, A. 2018. Water stress and human migration: a global, georeferenced review of empirical research. Rome, Italy: FAO. 40p. (FAO Land and Water Discussion Paper 11)
Water stress ; Migration ; Adaptation ; Water analysis ; Research ; Agricultural production ; Environmental effects ; Temperature ; Precipitation ; Poverty ; Institutions ; Policy
(Location: IWMI HQ Call no: e-copy only Record No: H048705)
(1.18 MB) (1.18 MB)
11 Bannick, C. G.; Szewzyk, R.; Ricking, M.; Schniegler, S.; Obermaier, N.; Barthel, A. K.; Altmann, K.; Eisentraut, P.; Braun, U. 2019. Development and testing of a fractionated filtration for sampling of microplastics in water. Water Research, 149:650-658. [doi: https://doi.org/10.1016/j.watres.2018.10.045]
Microplastics ; Filtration ; Representative sampling ; Wastewater treatment plants ; Discharges ; Sedimentation ; Surface water ; Water analysis
(Location: IWMI HQ Call no: e-copy only Record No: H049225)
(0.72 MB)
A harmonization of sampling, sample preparation and detection is pivotal in order to obtain comparable data on microplastics (MP) in the environment. This paper develops and proposes a suitable sampling concept for waterbodies that considers different plastic specific properties and influencing factors in the environment.
Both artificial water including defined MP fractions and the discharge of a wastewater treatment plant were used to verify the derived sampling procedure, sample preparation and the subsequent analysis of MP using thermal extraction-desorption gas chromatography - mass spectrometry (TED-GC-MS).
A major finding of this paper is that an application of various particle size classes greatly improves the practical handling of the sampling equipment. Size classes also enable the TED-GC-MS to provide any data on the MP size distribution, a substantial sampling property affecting both the necessary sampling volume and the optimal sampling depth.
In the artificial water with defined MP fractions, the recovery rates ranged from 80 to 110%, depending on the different MP types and MP size classes. In the treated wastewater, we found both polyethylene and polystyrene in different size classes and quantities.
Both artificial water including defined MP fractions and the discharge of a wastewater treatment plant were used to verify the derived sampling procedure, sample preparation and the subsequent analysis of MP using thermal extraction-desorption gas chromatography - mass spectrometry (TED-GC-MS).
A major finding of this paper is that an application of various particle size classes greatly improves the practical handling of the sampling equipment. Size classes also enable the TED-GC-MS to provide any data on the MP size distribution, a substantial sampling property affecting both the necessary sampling volume and the optimal sampling depth.
In the artificial water with defined MP fractions, the recovery rates ranged from 80 to 110%, depending on the different MP types and MP size classes. In the treated wastewater, we found both polyethylene and polystyrene in different size classes and quantities.
12 Acharya, K.; Blackburn, A.; Mohammed, Jemila; Haile, Alemseged Tamiru; Hiruy, A. M.; Werner, D. 2020. Metagenomic water quality monitoring with a portable laboratory. Water Research, 184:116112. [doi: https://doi.org/10.1016/j.watres.2020.116112]
Water quality ; Water analysis ; Monitoring ; Wastewater treatment plants ; Microbiological analysis ; Waterborne diseases ; Faecal coliforms ; Chemicophysical properties ; Portable equipment ; Costs ; Case studies / Ethiopia / United Kingdom / Addis Ababa / Birtley / Akaki River
(Location: IWMI HQ Call no: e-copy only Record No: H049934)
https://www.sciencedirect.com/science/article/pii/S0043135420306497/pdfft?md5=3d548784ecadc5dc3734e797551d099c&pid=1-s2.0-S0043135420306497-main.pdf
https://vlibrary.iwmi.org/pdf/H049934.pdf
https://vlibrary.iwmi.org/pdf/H049934.pdf
(1.54 MB) (1.54 MB)
We describe the technical feasibility of metagenomic water quality analysis using only portable equipment, for example mini-vacuum pumps and filtration units, mini-centrifuges, mini-PCR machines and the memory-stick sized MinION of Oxford Nanopore Technologies, for the library preparation and sequencing of 16S rRNA gene amplicons. Using this portable toolbox on site, we successfully characterized the microbiome of water samples collected from Birtley Sewage Treatment Plant, UK, and its environs. We also demonstrated the applicability of the portable metagenomics toolbox in a low-income country by surveying water samples from the Akaki River around Addis Ababa, Ethiopia. The 16S rRNA gene sequencing workflow, including DNA extraction, PCR amplification, sequencing library preparation, and sequencing was accomplished within one working day. The metagenomic data became available within 24e72 h, depending on internet speed. Metagenomic analysis clearly distinguished the microbiome of pristine samples from sewage influenced water samples. Metagenomic analysis identified the potential role of two bacterial genera not conventionally monitored, Arcobacter and Aeromonas, as predominant faecal pollution indicators/waterborne hazards. Subsequent quantitative PCR analysis validated the high Arcobacter butzleri abundances observed in the urban influenced Akaki River water samples by portable next generation sequencing with the MinION device. Overall, our field deployable metagenomics toolbox advances the capability of scientists to comprehensively monitor microbiomes anywhere in the world, including in the water, food and drinks industries, the health services, agriculture and beyond.
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