摘要
以自制的液滴体积为0.01～0.02 mL的聚乙烯毛细滴管对水中氯离子含量进行数滴分析,其主要仪器外形小巧、便于携带,滴定快速、准确,试剂消耗量约为常量法的二十分之一,滴定剂用量约为20～100滴,氯离子含量不确定度Urel(C)为3.03%,与常量法略小,相对标准偏差比常量法的相当。该法克服了常量法中滴定管、移液管、铁架台和蝴蝶夹等仪器携带不方便的不足,适用于水中氯离子含量的室外快速分析。
A counting drop analysis method in determination of chlorine ion content in water had been studied by home-made polyethylene capillary burette of 0.01 to 0.02 mL per drop, its main apparatus was small, simple, easily made and portable to carry. Consumption of reagent was about twentieth of regular-amount method, dosage of titration was only about 20 to100 drops, the related expanded uncertainty Urel （C） of chlorine ion was about 3.03%, a little smaller than regular-amount method, the relative error RSD（%） correspond to regular-amount method. The method overcame the inconvenience in carrying burette, suction pipette, iron set, butterfly clip in common analysis, and was quite suitable for outdoors rapid analysis of chlorine ion content in water.
出处
《广东化工》
CAS
2007年第7期119-121,共3页
Guangdong Chemical Industry
关键词
毛细滴管数滴法
野外测定
氯离子
水质分析
counting drop method of capillary burette
outdoors measurement
chlorine ion
water quality analysis
