Cao Hui, Xiao Jian Bo
School of Chemistry and Chemical Engineering, Nantong University, Nantong 226000, PR China.
Ann Chim. 2007 Jan-Feb;97(1-2):49-58. doi: 10.1002/adic.200690085.
An Ion Chromatographic (IC) method for the determination of six organic acids and three inorganic anions in alkaline solutions was reported. Formic, acetic, propionic, oxalic, succinic, glutaric acid, F-, Cl-, and SO4(2-) were separated and determined in 33 min. The analytes were removed from Bayer liquor by using an ion-exchange resin column. The chromatographic separation was achieved with only one IonPac AS11-HC column thermostated at 30 degrees C. Organic acids and inorganic anions were detected with a suppressed conductance detector. The precision results' showed that the repeatability and reproducibility were < 2.94 and < 1.37%, respectively. The accuracy of the method was assessed by the recoveries ranging from 86.3 to 105.6%. Under optimum conditions the detection limits ranged from 0.008 to 0.053 mg/l.
报道了一种离子色谱（IC）法，用于测定碱性溶液中的六种有机酸和三种无机阴离子。甲酸、乙酸、丙酸、草酸、琥珀酸、戊二酸、氟离子、氯离子和硫酸根离子在33分钟内实现分离和测定。通过离子交换树脂柱从拜耳液中除去分析物。仅使用一根在30℃恒温的IonPac AS11-HC柱即可实现色谱分离。采用抑制电导检测器检测有机酸和无机阴离子。精密度结果表明，重复性和再现性分别<2.94%和<1.37%。该方法的准确度通过回收率在86.3%至105.6%之间进行评估。在最佳条件下，检测限为0.008至0.053mg/L。
