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Analyses and assessment of the spatial and temporal distribution of nitrogen compounds in surface waters
Author(s) -
Georgieva Nedyalka,
Yaneva Zvezdelina,
Kostadinova Gergana
Publication year - 2013
Publication title -
water and environment journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 37
eISSN - 1747-6593
pISSN - 1747-6585
DOI - 10.1111/j.1747-6593.2012.00341.x
Subject(s) - surface water , nitrate , environmental chemistry , nitrogen , pollutant , environmental science , pollution , spatial distribution , water quality , nitrite , ammonium , hydrology (agriculture) , chemistry , environmental engineering , ecology , geography , geology , biology , remote sensing , geotechnical engineering , organic chemistry
The temporal concentration variations and spatial distribution of nitrogen compounds (nitrate, nitrite, ammonium) in the natural surface waters of Stara Zagora Region, B ulgaria, over a period of 1 year were assessed in the present study. Nitrate‐nitrogen concentrations in all surface water samples, except for the D ecember value – 21.8 mg/L in Zetyovo Reservoir, were within the permissible national quality standards. NO 2 – ‐N could be classified as a priority pollutant of Chirpan and Zetyovo Reservoirs waters. The greatest extent of NH 4 + ‐ N pollution was registered in Chirpan Reservoir surface waters. The correlation study revealed appreciable mutual relationship only between NH 4 + ‐N and NO 2 – ‐N in the surface waters. The hierarchical cluster analysis ( HCA ) exhibited divergent apportionment of nitrogen compounds in the surface water bodies.