摘要
目的:建立能够同时测定生活饮用水中亚氯酸盐、氯酸盐和溴酸盐的离子色谱法。方法:选择Ion-PacAS19色谱柱,淋洗液为氢氧根淋洗液,流速为1.0 ml/min,进样量为500μl,电导检测池温度为30℃,色谱柱温度为35℃,抑制器抑制模式为自动再生模式,抑制器电流为87 mA。结果:在0μg/L～500.0μg/L范围内,亚氯酸盐的线性方程为:y=2.640x-0.027,r=0.9999,检出限为0.1μg/L;在0μg/L～100.0μg/L溴酸盐的线性方程为:y=1.342x-0.003,r=0.9999,检出限为0.5μg/L;在0μg/L～500.0μg/L氯酸盐的线性方程为:y=2.157x-0.043,r=0.9999,检出限为0.2μg/L。加标回收试验结果显示,该方法的平均回收率为99.7%～102.6%,RSD为1.16%～3.56%。结论:该法操作简单、快速、准确,灵敏度高、干扰少,适用于饮用水中亚氯酸盐、氯酸盐和溴酸盐的同时测定。
Objective ：To develop an ion chromatography （IC） for simultaneous determination of chlorite, chlo- rate and bromate in drinking water. Methods： The IC separation was carried out with the IonPAC AS19 column by using hydroxide eluent at the flow rate of 1.0 ml/min. The injection volume was 500 μl. Conductivity detection cell temperature was set at 30℃, column temperature was set at 35℃. Suppressor was in automatic regeneration mode, suppressor current was 87 mA. Results： The results showed that in the range of 0μg/L to 500 μg/L, the linear e- quation of chlorite was y = 2. 640x- 0. 027, r = 0. 9999, the detection limit was 0.1 μg/L; In the range of 0μg/L - 100 μg/L, the linear equation of bromate was y = 1. 342x - 0. 003, r = 0. 9999, detection limit was 0.5 μg/L ; In the range of 0 μg/L -500 μg/L, the linear equation of chlorate was y = 2. 157x - 0. 043, r = 0. 9999, the detection limit was 0.2 μg/L. The recovery rates were 99.70% -102.6% and the relative standard deviations （RSD） were 1.16% -3.56%. Conclusion： The method is simple,fast, accurate, sensitive, little interference and applicable to the simultaneous determination of chlorite, chlorate and bromate in drinking water.
出处
《中国卫生检验杂志》
北大核心
2012年第10期2284-2287,共4页
Chinese Journal of Health Laboratory Technology
