Investigation of Inland Pollution Using Total Carbon (Tc), Total Organic Carbon (Toc), Inorganic Carbon (Ic), Total Nitrogen (Tn) and Toc/Tn Ratios

Abstract

In this study, sediment samples were taken at three different points in Edremit Bay at different depths from the sea floor. In Edremit Bay, it was investigated whether the pollution was marine or terrestrial. According the results of measurement of TOC (Total Organic Carbon) values have been yielded results between 10.35-20.36 (Küçükkuyu), 8.14-16.40 (Güre), and 2.71-12.60 g/kg (Dikili) in the marine sediments. The fact that first and second regions are susceptible to mountainous and intra-continental erosion (sedimentation 5.743 and 7.509 mm/year) increased the TOC value. The highest TOC/TN ratio (12.33-46.89) was found in the second region. No linear change in TOC and TOC/TN (Total Nitrogen) ratios was observed at all three points depending on the depth. At results of compared all carotes, the low TOC/TN (2.82-14.48) ratio have been observed in the BH1 carotes, probably the result of small stream beds and low intra-continental erosion. This study shows that TOC and TOC/TN ratios in different parts of Edremit Gulf show inconsistency and this inconsistency arises not only from the marine contribution their natural organic matter, but also from the continent.

Physicochemical Properties and Bacterial Diversity of Sediment in Sea Cucumber Culture Ponds under High Summer Temperatures

“…TOC and TN accumulation can reflect the functionality of the sediment environment, and low TOC and TN contents are indicative of low organic matter and high sediment stability [31]. High nitrogen and carbon concentrations in the sediment indicate that the biodegradation of carbonaceous and nitrogenous substances is slow, with low nitrification and denitrification rates in the seabed [32].…”