Analyses and assessment of the spatial and temporal distribution of nitrogen compounds in surface waters

作者：Georgieva Nedyalka^*; Yaneva Zvezdelina; Kostadinova Gergana

来源：Water and Environment Journal, 2013, 27(2): 187-196.

DOI：10.1111/j.1747-6593.2012.00341.x

• ammonium
• hierarchical cluster analysis
• nitrates
• nitrites
• principal component analysis
• Stara Zagora Region
• surface waters

The temporal concentration variations and spatial distribution of nitrogen compounds (nitrate, nitrite, ammonium) in the natural surface waters of Stara Zagora Region, Bulgaria, over a period of 1 year were assessed in the present study. Nitrate-nitrogen concentrations in all surface water samples, except for the December value 21.8mg/L in Zetyovo Reservoir, were within the permissible national quality standards. NO2 -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 NH4 +-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.

• 出版日期2013-6