摘要
目的探讨用自动电位滴定仪测定水中的氯化物含量 ,为低含量氯化物的测定提供了新的方法依据。方法用DL53自动电位滴定仪和141_SC银电极测定各种水样的氯化物含量。结果采用自动电位滴定仪测定12份水样中氯化物与国标方法中的人工滴定法所测得的结果作比较 ,差异无显著性 (P>0.05)。对不同浓度范围氯化物标准溶液进行滴定 ,其回收率为98.0%～103.7 % ,相对标准偏差为0.16 %。结论自动电位滴定法具有容易掌握 ,测定快速、准确等优点 ,是值得广泛应用的分析方法。
Objective To explore the method for determination of chloride in water by automatic potentiometric titrimeter and provide basis for developing new method for determination of low levels of chloride in water. Methods The contents of chloride in various water samples were determined by DL53 automatic potentiometric titrimeter and 141_SC silver electrode. Results No significant differences were observed in levels of chloride in 12 water samples determined by automatic potentiometric titrimeter and manual titration of National Standard (P>0.05). The titrimetric determination of standard solution containing different levels of chloride showed recovery rates of 98.0%～103.7%, relative standard deviation was 0.16%. Conclusion Automatic potentiometric titration was easy to grasp, rapid and accurate, which was a new analytical method worthy to be applied extensively.
出处
《环境与健康杂志》
CAS
CSCD
北大核心
2002年第2期142-143,共2页
Journal of Environment and Health
关键词
电位滴定
水
氯化物
Potentiometric titration
Water
Chloride
