Use of anthropogenic chemical signals in uderstanding ocean process - East Sea

Use of anthropogenic chemical signals in uderstanding ocean process - East Sea
Kannan; N. Yamashita; G. Petrick; 심원준; 오재룡
KIOST Author(s)
Shim, Won Joon(심원준)
Publication Year
The interaction between water (solution) and organic particulate matter in the aquatic system is the key to understand sources, sinks and environmental behavior of persistent anthropogenic pollutants in marine environment, Most of these compounds occur at extremely low concentrations in ocean water. To allow the detection of, for example, Polychlorinated biphenyl congeners in solution at 0.01 L level (that normally exist in open ocean waters) with a GC-ECD sensitivity of 0.1 pg per congener, the water sample volume must be at least 1000 dm-3, provided that contamination does not play a significant role. Thus, many levels reported earlier may not represent actual concentrations in seawater!A system for in-situ filtration and extraction of organics in natural waters has been developed and up to 2000 L water can be filtered and extracted at low suspended matter concentrations. Contamination is extremely low; water flow can be selected and maintained at a constant rate. Various resins can be applied, with different optimum flow rates for the efficient extraction of the compounds of interest. The properties of the resin (e.g. XAD-2) do not change with depth. The operation of the unit is controlled by menu-driven software. All relevant data are stored for later evaluation. Two vertical profiles (deep water and shallow coastal water) and two space-integrated surface profiles were taken. Concentrations of SCBs (sum of 30 individual congeners) in solution were between 0.1 and 1.2 pg dm-3and in suspension were between 0.2 and 1.5 pg/L those of SNoPhs in solution were 2-150 pg/L and below detection limits in suspension. The concentrations of SCBs and nonylphenols in solution as well as the compositions of the CB mixtures in solution in the vertical profile indicates a vertical structure similar to the situation in the open ocean. The concentrations of CBs in solution were determined primarily by characteristics of the water bodies involved, solution-suspension interactio
Bibliographic Citation
2004 한국해양학회 춘계학술대회, pp.440 - 441, 2004
Related Researcher
Research Interests

Microplastic pollution,Persistent Organic Pollutants,Oil Pollution,미세플라스틱 오염,잔류성 유기오염물질,유류오염

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