منابع مشابه
Persistent pollutants urban rivers sediment survey: implications for pollution control.
The impacts of diffuse urban sources of pollution on watercourses are quantified. A survey of nine urban streams in Scotland for persistent pollutants in stream sediments is described, together with sediments from SUDS ponds. Determinands reported are: PAHs, total hydrocarbons, and toxic metals (As, Zn, Ni, Pb, Cu, Cr, Cd). Results highlight hydrocarbons as a major urban pollutant, and show sig...
متن کاملAlarming nutrient pollution of Chinese rivers as a result of agricultural transitions
Transitions inChinese agriculture resulted in industrial animal production systems, disconnected from crop production.We analyzed side-effects of these transitions on total dissolved nitrogen (TDN) and phosphorus (TDP) inputs to rivers. In 2000, when transitionswere ongoing, 30%–70%of the manurewas directly discharged to rivers (range for sub-basins). Before the transition (1970) this was only ...
متن کاملPhysico-chemical characteristics and pollution levels of heavy metals in the rivers in Thohoyandou, South Africa
In this study, trace metal analysis of the surface waters from river Dzindi, Madanzhe and Mvudi in Thohoyandou, South Africa, were conducted with a view to obtain a baseline data of their levels. The physico-chemical forms of the metals as a means of assessing their availability and non-availability for toxicity to aquatic organisms was also investigated. Surface water samples were collected ra...
متن کاملVulnerability Assessment and Application of Bacterial Technology on Urban Rivers for Pollution Eradication
To protect against the environmental pollution, the present research was undertaken to enumerate the Bacterial Technologies (BTs) on the restoration of polluted urban rivers, that is, Fenghu-Song Yang River (FSR) and Xuxi River (XXR). Experimental research accounted for the physiochemical parameters (pH; temperature; dissolved oxygen (DO); chemical oxygen demand (COD); total phosphorus (TP); to...
متن کاملAssessing pollution in Izmir Bay from rivers in western Turkey: heavy metals.
Urban rivers having different catchment areas and properties are investigated in order to infer their heavy metal contribution to the Izmir Inner Bay. The concentrations of Cd, Cr, Cu, Ni, Pb, and Zn in the waters and sediments of these rivers were measured and compared with the limit values given in the Sediment Quality Guidelines and Screening Quick Reference Tables (SQuiRTs). Metal concentra...
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ژورنال
عنوان ژورنال: Journal of the Royal Sanitary Institute
سال: 1908
ISSN: 0370-7334
DOI: 10.1177/146642400802900202