Measurement of Total Organic Carbon in Salt-Containing Sediments

User Benefits

- By performing a desalination process, it is possible to measure sediment samples containing salts. - The measurement time for both TC and IC is approximately 6 to 8 minutes per analysis, allowing for rapid measurement. - A single system enables TOC measurement for both liquid and solid samples.

Introduction

Sediments refer to the surface-layer deposits accumulated at the bottoms of water bodies such as lakes, seas, and rivers. The organic matter in sediments plays various roles in aquatic ecosystems, including nutrient supply and pollutant adsorption. Therefore, measuring the organic matter content in sediments is crucial for understanding sediment characteristics and is an essential process for environmental management and ecosystem protection. Total organic carbon (TOC) measurement provides a quantitative evaluation of organic matter in sediments. However, when directly measuring sediments that contain salts, concerns arise regarding the influence of the salts on measurement values, as well as potential corrosion of the detector and other impacts on the equipment. To prevent these issues, a desalination process is required to reduce the salt concentration before measurement. This article explores sample pretreatment methods, including desalination, for salt-containing sediment samples and presents an example of TOC measurement in such sediments.

March 25, 2025 GMT