论文部分内容阅读
目的建立1次进样同时测定水中4种无机阴离子F-、Cl-、NO3--N、SO42-的方法。方法用Dionex ICS-1000离子色谱仪,Ionpac AS9-HC分离柱。淋洗液为3.5mmol/L NaCO3-1.0mmol/L NaHCO3,流速1.20mL/min,进样量25μL,电导检测。结果能简便、快速、有效地分离检测水中4种阴离子。方法线性关系好(r>0.9998),线性范围宽,检出限低(0.0121～0.156mg/L),RSD<3.0%,样品加标平均回收率98.0%～100.7%。结论该方法操作简单,检测所用试剂少,灵敏度高,线性范围较宽,能快速得到准确的检验结果,适用于大批量水样检测。
Objective To establish a method of simultaneous injections of four inorganic anions F-, Cl-, NO3 - N and SO42- in water. Methods Dionex ICS-1000 Ion Chromatograph, Ionpac AS9-HC column was used. Eluent was 3.5mmol / L NaCO3-1.0mmol / L NaHCO3, flow rate 1.20mL / min, injection volume 25μL, conductivity detection. The results can be simple, rapid and effective separation and detection of four kinds of anions in water. The method has good linear relationship (r> 0.9998), wide linear range, low detection limit (0.0121 ~ 0.156 mg / L), RSD <3.0% and average recoveries of samples from 98.0% to 100.7%. Conclusion The method is simple, less reagents used for detection, high sensitivity, wide linear range, can quickly get accurate test results, suitable for large quantities of water samples.