摘要
建立了一种水体氧化还原电位的检测方法,本检测方法采用了一种网筛式匀样的简易装置,在不影响或极少影响水体本身氧化还原电位和其他指标的前提下,使待测水体快速达到流体均匀性和稳定性,从而使氧化还原电位在线监测探头在很短时间内得到稳定的示值。使用网筛式匀样法测定氧化还原电位相比未经处理直接测定的时间缩短了约76%;测定准确性与虹吸法接近,优于搅拌法和直接测定;重复性为0.2%,优于虹吸法、搅拌法和直接测定法。网筛式匀样法能有效提高氧化还原电位的测定效率,可满足多种行业的水样品氧化还原电位的分析需要。
A method for detecting the oxidation-reduction potential of water was established. A simple device was adopted with mesh screen type homogenization, with few or without affecting the oxidation potential and other indicators of water. The sample of water quickly achieved fluid uniformity and stability, so that the oxidation-reduction potential on-line monitoring probe obtained a stable indication in a short time. The time of determination of redox potential by screen homogenization method was shortened by about 76% compared with that of direct determination without treatment.The accuracy of the measurement was close to that of the siphon method, which was superior to the stirring method and the direct measurement. The repeatability was 0.2%, which was better than siphon method, stirring method and direct measurement method. The mesh screen type homogenization method can effectively improve the measurement efficiency of the oxidation-reduction potential, and can meet the analysis needs of the oxidation-reduction potential of water samples as various industries.
作者
张琪雨
ZHANG Qi-yu(Zhuhai Municipal Water Supply and Drainage Pollution Treatment Center/Zhuhai Water Quality Monitoring Center,Guangdong Zhuhai 519020,China)
出处
《广州化工》
CAS
2022年第23期123-125,178,共4页
GuangZhou Chemical Industry
关键词
水体
氧化还原电位
测定
优化
water
oxidation reduction potential
determination
optimization
