Tanaka K, Ohta K, Haddad P R, Fritz J S, Miyanaga A, Hu W, Hasebe K, Lee K P, Sarzanini C
National Industrial Research Institute of Nagoya, Aichi, Japan.
J Chromatogr A. 2001 Jun 22;920(1-2):239-45. doi: 10.1016/s0021-9673(01)00578-7.
A new method for the simultaneous determination of anions (sulfate, nitrate, and chloride) and cations (sodium, ammonium, potassium, magnesium, and calcium) in acid rain waters was investigated using high-performance ion-exclusion/cation-exchange chromatography with conductimetric detection on a separation column packed with a polymethacrylate-based weakly acidic cation-exchange resin in the hydrogen-form and an eluent comprising 1.5 mM sulfosalicylic acid-6 mM 18-crown-6 at pH 2.6, operated at 1.5 ml/min. Effective separation and highly sensitive conductimetric detection for the anions and the cations was achieved in about 14 min. Since the ionic balance (equivalents of anions/equivalents of cations) of acid rain waters of different pH (4.40-4.67) ranged from 0.97 to 0.94, evaluation of the water quality of acid rain was possible. This method was successfully applied to the simultaneous determination of the anions and the cations in acid rain transported from mainland China and North Korea to central Japan monitored by a meteorological satellite data analyzer.
研究了一种采用高效离子排斥/阳离子交换色谱法同时测定雨水中阴离子（硫酸根、硝酸根和氯离子）和阳离子（钠离子、铵根、钾离子、镁离子和钙离子）的新方法。该方法使用填充有氢型聚甲基丙烯酸酯基弱酸性阳离子交换树脂的分离柱，并以1.5 mM磺基水杨酸 - 6 mM 18 - 冠 - 6为洗脱液，pH值为2.6，流速为1.5 ml/min，采用电导检测。在约14分钟内实现了对阴离子和阳离子有效的分离以及高灵敏度的电导检测。由于不同pH值（4.40 - 4.67）的雨水中离子平衡（阴离子当量/阳离子当量）范围为0.97至0.94，因此可以对酸雨水质进行评估。该方法成功应用于通过气象卫星数据分析器监测的从中国大陆和朝鲜输送到日本中部的雨水中阴离子和阳离子的同时测定。
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