Comparison of HTC method and UV/persulphate method to determine colloidal organic carbon in seawater |
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| Authors: | Wang Jiang-tao Zhao Wei-hong Tan Li-ju Zhang Zheng-bin |
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| Institution: | (1) College of Chemistry and Chemical Engineering, Ocean University of Qingdao, 266003 Qingdao, China;(2) Institute of Oceanology, Chinese Academy of Sciences, 266071 Qingdao, China |
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| Abstract: | The application of cross flow ultrafiltration(CFF) techniques to separate colloidal organic carbon(COC) from truly dissolved organic carbon(TDOC) was investigated; COC and TDOC were determined by the high temperature combustion method(HTC) and UV/persulphate method. It was found that CFF can quantitatively separate COC from seawater. The determination results by the HTC and UV/persulphate method for COC and TDOC showed little difference, which suggested that the oxidation efficiency of the two methods are identical. Colloidal particles have no remarkable influence on the oxidation efficiency of the UV/persulphate method. |
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| Keywords: | cross flow ultrafiltration colloidal organic carbon high temperature combustion method UV/persulphate method |
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