缓冲盐类型和离子对试剂非对离子对强离解酸性化合物离子对反相液相色谱保留行为的影响
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刘小兰, 高薇, 梁超, 乔俊琴, 王康, 练鸿振
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Effects of buffer salt types and non-counter ions of ion-pair reagents on the retention behavior of strongly ionized acid compounds in ion-pair reversed-phase liquid chromatography
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LIU Xiaolan, GAO Wei, LIANG Chao, QIAO Junqin, WANG Kang, LIAN Hongzhen
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表1 化合物的log D7.0、pKa、ne、A、B和PSA值
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Table 1 log D7.0, pKa, charge (ne), Abraham solvation parameters (A and B) and polar surface area (PSA) of investigated compounds
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| No. | Compound | log D7.0 | pKa | ne | A | B | PSA/nm2 | | SA1 | benzenesulfonic acid | -2.16 | -0.60±0.50 | -1.00 | 0.31 | 0.88 | 0.628 | | SA2 | 1,5-naphthalenedisulfonic acid | -4.69 | -0.60±0.40 | -2.00 | 0.63 | 1.71 | 1.260 | | SA3 | 4-chlorobenzenesulfonic acid | -1.08 | -0.83±0.50 | -1.00 | 0.31 | 0.87 | 0.628 | | SA4 | 4-methylbenzenesulfonic acid | -1.34 | -0.43±0.50 | -1.00 | 0.31 | 0.88 | 0.628 | | SA5 | 5-amino-2-nanphthalenesulfonic acid | -1.81 | -0.23±0.40 | -1.00 | 0.54 | 1.26 | 0.888 | | SA6 | 2-amino-1,4-benzenedisulfonic acid | -5.55 | -1.15±0.50 | -2.00 | 0.85 | 1.90 | 1.520 | | SA7 | 1-naphthalenesulfonic acid | -0.74 | 0.17±0.10 | -1.00 | 0.31 | 0.94 | 0.628 | | SA8 | 2-naphthalenesulfonic acid | -0.75 | 0.27±0.10 | -1.00 | 0.31 | 0.94 | 0.628 | | SA9 | 2,4-dimethylbenzenesulfonic acid | -1.09 | -0.36±0.50 | -1.00 | 0.31 | 0.89 | 0.628 | | SA10 | 4-sulfobenzoic acid | -4.70 | -1.01±0.50 | -2.00 | 0.88 | 1.21 | 1.000 | | SA11 | 3,5-dichloro-2-hydroxybenzenesulfonic acid | -0.33 | -1.29±0.45 | -1.14 | 0.81 | 0.90 | 0.830 | | SA12 | 3,5-dicarbomethoxybenzenesulfonic acid | -1.53 | -1.34±0.30 | -1.00 | 0.31 | 1.55 | 1.550 | | SA13 | 4-hydroxybenzenesulfonic acid | -2.70 | -0.23±0.50 | -1.01 | 0.81 | 1.15 | 0.830 | | SA14 | 3-sulfobenzoic acid | -4.36 | -0.99±0.15 | -2.00 | 0.88 | 1.21 | 1.000 |
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