离子色谱法测定工业废水中甲酸根、乙酸根和氯离子

Determination of formate, acetate and chloride in industrial wastewater by ion chromatography

中文关键词:  离子色谱法  甲酸  乙酸  氯离子

英文关键词:ion chromatography  formic acid  acetic acid  the chloride ion

中文摘要:

      目的 建立离子色谱法测定工业废水中甲酸、乙酸和氯离子的方法。方法 用离子色谱法检测, 外标法定量, 以NaOH为淋洗液梯度洗脱, 经lonpacAS11_HC型分析柱, 流速1 mL/min, 柱温和检测池温度为30 ℃。结果 甲酸、乙酸和氯离子在0.05~10.0 mg/L线性关系良好(r＞0.9994); 方法检出限为0.02~0.05 mg/L。本方法在添加水平分别为0.05、1.0、2.0 mg/L时, 加标回收率为91.8%~95.8%, 相对标准偏差为2.35%~5.34%, 检出限为0.02~0.05 mg/L。结论 本方法准确、专属、灵敏, 所需样品量小, 操作简便可靠。

英文摘要:

      Objective To establish a method for the determination of formic acid, acetic acid and chloride in industrial wastewater by ion chromatography. Methods It was detected by Ion chromatography detection, , quantified by external standard, , eluted with NaOH as eluent gradient, and passed through a lonpacAS11_HC type analytical column at a flow rate of 1 mL / min. The temperature of column and temperature detection cell temperature was 30 ℃. Results The linear relationship between formic acid, acetic acid and chloride ions was 0.05?10.0 mg/L (r>0.9994). The detection limit of the method was 0.02?0.05 mg/L. When the addition levels were 0.05, 1.0, and 2.0 mg/L, the recoveries of the standard were 91.8% to 95.8%, the relative standard deviations were 2.35% to 5.34%, and the detection limits were 0.02 to 0.05 mg/L. Conclusion This method is accurate, exclusive and sensitive, requires a small amount of sample, is easy to operate and reliable.