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Simultaneous determination of dissolved organic carbon and phosphorus in waters using flame ionization and photometric detectors
Authors:Kunio Nakajima
Affiliation:Government Industrial Research Institute, Nagoya, Hirate-cho, Kita-ku, Nagoya-city, 462 Japan
Abstract:An apparatus with flame ionization and photometric detectors was assembled for the simultaneous determination of dissolved organic carbon (DOC) and phosphorus (DP) in waters. The optimum operating conditions were described. The long-term precision (relative standard deviation) is 5.8% for DOC and 5.2% for DP. The detection limits are 0.09 μg ml−1 for DOC and 0.03 μg ml−1 for DP. The responses for various DOC and DP compounds agreed almost with those obtained by combustion-infrared and persulfate digestion-colorimetric methods, respectively. DOC and DP in several water samples were determined by this method and other methods, and the results obtained by those methods were discussed.
Keywords:simultaneous determination   dissolved organic carbon and phosphorus   waters   FID and FPD
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