The content of DOC, POC, and TOC in lobelian lakes

The material for our study came from 44 lobelian lakes located near Bytów. The lakes differed in size, depth, and drainage area development. The objective of the study was to determine the content of TOC, DOC, and POC in these lakes using a high temperature method. COD was also measured using a dichromate method, and after that the results were expressed by the TOC values. Then the TOC values obtained via the two methods were compared. The lakes under investigation proved to contain different amounts of dissolved organic carbon (1.8-19.0 mg/1), with POC falling within the range 0-33% of TOC.