The Reversed-Phase HPLC of Dispersing Agent NNO And Determination of Molecular Weight Distributions |
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| Authors: | Wei Tianjun Feng Guangying Wei Dongqing |
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| Institution: | 1. Department of Chemistry , Normal University of Henan , Xinxiang, Henan, People's Republic of China;2. Department of Chemistry , University of British Columbia , Vancouver, British Columbia, V6T 1Y6, Canada |
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| Abstract: | The dispersing agent NNO(condensates of β - naphthalenesulphonic acid and formaldehyde) were analyzed by reversed-phase HPLC. The analytical conditions were: column ODS, 2 × 250mm; flow rate, 5ml/ min; sample size, 2μl(20% NNO aqueous solution); UV detector, λ = 254nm; column temperature 293k It is shown that the new method is very efficient, the analysis time being only 11 minutes. We found eight component compound peaks of the condensates. The peaks of the highly condensed compounds could also be separated and identified by IR spectrum. The weight distribution curve of seven samples are given. |
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| Keywords: | Biological Reactors Monod kinetics Cascade-Connected systems Plug-flow conditions Dispersion Recirculation Mathematical Models |
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