Abstract:
The solid sodium chlorite contents of 20, 10, 5, 2.5, 1 mg/ L and the sodium chlorate (reacted with hydrochloric acid)contents of 20,10, 5,2.5,1 mg/L in water samples are determined respectively by autopoten-tiometric titrator.The recovery rates and detection limits are figured out, respectively.All these show that the potentiometric titrimetry can determine chlorine dioxide, chlorine, chlorite and chlorate at more than 5 mg/L in water quickly and accurately.
Key words:
potentiometric titrimetry,
chlorine dioxide,
concentration
摘要：
利用自动电位滴定仪分别测定了NaClO2固体质量浓度为20mg/L,10mg/L,5mg/L,2.5mg/L,1mg/L和NaClO2(与盐酸反应)质量浓度为20mg/L,10mg/L,5mg/L,2.5mg/L,1mg/L的水样,分别求出其回收率及检出限。试验表明电位滴定法能在5mg/L以上质量浓度快速准确的区分测定ClO2,Cl2,ClO2-和ClO3-。
关键词:
电位滴定法,
二氧化氯,
质量浓度
CLC Number:
Shi Laishun, Hu Dedong, Xie Yongfang. Researches on the determination of chlorine dioxide, chlorine, chlorite and chlorate in water by potentiometric titriation method[J]. INDUSTRIAL WATER TREATMENT, 2003, 23(4): 57-60.
施来顺, 胡德栋, 谢永芳. 电位滴定法区分测定水中微量ClO2,Cl2,ClO2-及ClO3-的研究[J]. 工业水处理, 2003, 23(4): 57-60.