【作者】 施青红； 袁丽霞； 徐育； 张培敏； 朱岩；

【Author】 Shi Qinhong Yuan Lixia Xu Yu Zhang Peimin Zhu Yan(Chemical Department, Xixi campus of zhejiang university, Hangzhou 310028)

【机构】 浙江大学西溪校区化学系；

【摘要】 对氯苯氧乙酸在流速为1ml/min,淋洗液为0.8mmol/l的Na₂CO₃和0.5mmol/l的NaOH的混合溶液的离子色谱仪DIONEX（DX-100T）上较好的检测。其检测限为0.18μg/ml（S/N=2.5）;保留时间、峰高、峰面积的变异系数分别为1.0967%、0.9786%、0.5836%,在线性范围30—300μg/ml,峰高、峰面积的线性回归系数分别为0.9977和0.9971。在此条件下,常规阴离子对氯苯氧乙酸的测定没有干扰。对土壤样品进行测定,回收率为99.70%（峰面积）。这种方法快速、灵敏,结果令人满意。更多还原

【Abstract】 An ion chromatography system for the determination of 4-chlorophenoxy-acetic acid was described. Ion chromatograph was carried out by suppressed conductivity detection (DX-100T). The eluent contained 0. 8mmol/l Na2CO3 and 0. 5mmol/l NaOH. The detection limit was 0. 18μg/ml(S/N = 2. 5). The relative standard deviation was 1. 0967% for retention time, 0. 9786% for height and 0. 5836% for area, respectively. The correlation coefficient of the calibration curve was 0. 9977 for area and 0. 9971 for height. The linear range was 30-300μg/ml. Common inorganic ion and organic acids did not interfere. The recovery was 99. 70% for area. The method was simple, rapid, reliable and inexpensive.更多还原