Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Analysis of Long-Term and Seasonal River Water Quality Changes in Latvia.
Author Tsirkunov, V. V. ; Nikanorov, A. M. ; Laznik, M. M. ; Dongwei, Z. ;
CORP Author Hydrochemical Inst., Rostov-na-Donu (USSR).;Environmental Research Lab., Athens, GA.
Publisher c1992
Year Published 1992
Report Number EPA/600/J-92/331;
Stock Number PB92-232933
Additional Subjects Water quality ; Rivers ; Water pollution sampling ; Latvia ; Long term effects ; Seasonal variations ; Nonpoint sources ; Concentration(Composition) ; Statistical analysis ; Hydrology ; Ions ; Nutrients ; Reprints ; Foreign technology
Library Call Number Additional Info Location Last
NTIS  PB92-232933 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/01/1993
Collation 14p
The paper presents the results of an analysis of long-term and seasonal river water quality changes in Latvia. Latvia was chosen mainly for two reasons: (1) there are relatively many river sites at which long-term observations have been made and (2) interpretation of the results is easier because only non-point sources of pollution have significant influence on river water quality at these sites. The report shows how to extract an optimal amount of information from the available historical water quality records using specially developed non-parametric tests and software.