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高矿化度的油田采出水中大量Cl-对离子色谱的测定有严重干扰,需要进行预处理。采用自制亚汞树脂柱去除油田采出水中大量的Cl-,离子色谱法测定了其中的微量挥发性脂肪酸含量。介绍了亚汞树脂柱的制备过程与预处理性能调查。实验结果表明,亚汞树脂柱具有很强的除Cl-能力,提高了离子色谱法测定挥发性脂肪酸的准确度,适用于油田采出水的分析预处理。
High concentrations of oil in the water produced by a large number of Cl-ion chromatographic determination of serious interference, the need for pretreatment. The home-made mercuric chloride resin column was used to remove a large amount of Cl- in the oilfield water, and the contents of trace volatile fatty acids were determined by ion chromatography. The preparation process and pretreatment performance of mercapto resin column are introduced. The experimental results show that the mercapto-resin column has a strong capability of removing Cl - and improves the accuracy of ion chromatography in the determination of volatile fatty acids, which is suitable for the analysis and pretreatment of the produced water in oil field.