A comparison between the high-temperature catalytic oxidation method (HTCO) and the UV/persulphate method for the determination of dissolved organic carbon (DOC)in seawater is presented in this paper. In seawater samp...A comparison between the high-temperature catalytic oxidation method (HTCO) and the UV/persulphate method for the determination of dissolved organic carbon (DOC)in seawater is presented in this paper. In seawater sample chloride ion can affect the oxidation efficiency of the UV/persulphate method if the asymptotic concentration of persulphate is not reached.During HTCO analysis, blanks that appear to originate mainly from the catalyst are high and far from constant.If the blanks are well estimated and correction is made, the difference of determined DOC values between the UV/persulphatemethod and the HTCO mehod is small, the HTCO values being slightly higher.展开更多
文摘A comparison between the high-temperature catalytic oxidation method (HTCO) and the UV/persulphate method for the determination of dissolved organic carbon (DOC)in seawater is presented in this paper. In seawater sample chloride ion can affect the oxidation efficiency of the UV/persulphate method if the asymptotic concentration of persulphate is not reached.During HTCO analysis, blanks that appear to originate mainly from the catalyst are high and far from constant.If the blanks are well estimated and correction is made, the difference of determined DOC values between the UV/persulphatemethod and the HTCO mehod is small, the HTCO values being slightly higher.
