Occurrence of nitrate in Tanzanian groundwater aquifers: A review

被引：59
作者：
Elisante E. [1 ,2 ]
Muzuka A.N.N. [1 ]
机构：
[1] Department of Water and Environmental Sciences and Engineering, Nelson Mandela African Institution of Science and Technology (NM-AIST), P. O. Box 447, Arusha
[2] Department of Physical Sciences, Faculty of Science, Sokoine University of Agriculture (SUA), P.O Box 3038, Morogoro
来源：
Applied Water Science | 2017年 / 7卷 / 1期
关键词：
Groundwater contamination; Human activities; Nitrate concentration; Tanzania;
D O I：
10.1007/s13201-015-0269-z
中图分类号：
学科分类号：
摘要：
More than 25 % of Tanzanian depends on groundwater as the main source of water for drinking, irrigation and industrial activities. The current trend of land use may lead to groundwater contamination and thus increasing risks associated with the usage of contaminated water. Nitrate is one of the contaminants resulting largely from anthropogenic activities that may find its way to the aquifers and thus threatening the quality of groundwater. Elevated levels of nitrate in groundwater may lead to human health and environmental problems. The current trend of land use in Tanzania associated with high population growth, poor sanitation facilities and fertilizer usage may lead to nitrate contamination of groundwater. This paper therefore aimed at providing an overview of to what extent human activities have altered the concentration of nitrate in groundwater aquifers in Tanzania. The concentration of nitrate in Tanzanian groundwater is variable with highest values observable in Dar es Salaam (up to 477.6 mg/l), Dodoma (up to 441.1 mg/l), Tanga (above 100 mg/l) and Manyara (180 mg/l). Such high values can be attributed to various human activities including onsite sanitation in urban centres and agricultural activities in rural areas. Furthermore, there are some signs of increasing concentration of nitrate in groundwater with time in some areas in response to increased human activities. However, reports on levels and trends of nitrate in groundwater in many regions of the country are lacking. For Tanzania to appropriately address the issue of groundwater contamination, a deliberate move to determine nitrate concentration in groundwater is required, as well as protection of recharge basins and improvement of onsite sanitation systems. © 2015, The Author(s).
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页码：71 / 87
页数：16
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共 90 条
  • [1] Baird C., Environmental chemistry, (1995)
  • [2] Bakari S.S., Aagaard P., Vogt R.D., Ruden F., Johansen I., Vuai S.A., Delineation of groundwater provenance in a coastal aquifer using statistical and isotopic methods, Southeast Tanzania, Environ Earth Sci, 66, pp. 889-902, (2012)
  • [3] Basalirwa C.P.K., Odiyo J.O., Mngodo R.J., Mpeta E.J., The climatological regions of Tanzania based on the rainfall characteristics, Int J Climatol, 19, pp. 69-80, (1999)
  • [4] Baumann E., Ball P., Beyene A., Rationalization of Drilling Operations in Tanzania Review of the Borehole Drilling Sector in Tanzania, Report, (2005)
  • [5] Bowell R.J., McEldowney S., Warren A., Mathew B., Bwankuzo M., Appleton J.D., Fuge R., McCall J.H., Biogeochemical factors affecting groundwater quality in central Tanzania, Environmental Geochemistry and Health: Geological Society, London, Special Publications, 113, pp. 107-130, (1996)
  • [6] Bowell R.J., Robertson S., Walles K., Bwankuzo M.A., Cowan J., Kimaro N., Mjengera H.A., Terkhell K., Warren A., Wood A., Pickford J., Improving water quality assessment and supply, Water and Sanitation for All: Partnerships and innovations. Proceedings of the 23rd WEDC Conference, pp. 146-149, (1997)
  • [7] Brindha K., Elango L., Fluoride in Groundwater: causes, implications and mitigation measures, Fluoride properties, applications and environmental management, pp. 111-136, (2011)
  • [8] Burkart M.R., Kolpin D.W., Hydrologic and land-use factors associated with herbicides and nitrate in near-surface aquifers, J Environ Qual, 22, pp. 646-656, (1993)
  • [9] Carol E.S., Kruse E.E., Laurencena P.C., Rojo A., Deluchi M.H., Ionic exchange in groundwater hydrochemical evolution. Study case: the drainage basin of El Pescado creek (Buenos Aires province, Argentina), Environ Earth Sci, 65, pp. 421-428, (2012)
  • [10] Cronin A., Pedley S., Hoadley A., Haldin L., Gibson J., Breslin N., Urbanisation effects on groundwater chemical quality: findings focusing on the nitrate problem from 2 African cities reliant on on-site sanitation, J Water Health, 5, pp. 441-454, (2007)
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