Scholarly record

CHEMICAL PECULIARITIES OF THE WATER RECOURSES IN THE UPPER PART OF OGOSTA RIVER CATCHMENTS, NORTHWESTERN BULGARIA

Georgi Zhelezov

Abstract

The Ogosta river catchments is one of the main water systems in North Bulgaria. The present study focuses on the characterization and analysis of the chemical peculiarities of the water in the upper part of the catchment area of the Ogosta river. It is based on a series of chemical analyzes of water samples collected during field research in the river monitoring area. The results obtained from the four basic different control points taken during the study. The investigation includes field and laboratory research of the parameters of pH and concentration of ammonia, nitrogen, nitrite (nitricole), nitrites (nitrihots), sulfate, calcium, carbonates, phosphates (HR), phosphates (LR), phosphor, nitrate, iron, copper and zinc. It is realized in two general stages – field work (collecting the water samples) and laboratory analysis of the number of parameters. The general observation of the research samples and result of the chemical analysis gives increased concentrations in phosphate content in S1, increased concentrations in total phosphorus content in S2, increased concentrations in ammonia content in S3 and high concentrations in phosphates contents in analysis of HR in S4. The results of the investigation are real picture for the present quality of one the basic component of the environment – waters. They can be used in the processes of decision making and management of the region. They are also related with the processes of environmental optimization and realization the conceptions for the transformation and sustainable development in the research region.

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