微型光电重金属水质自动监测仪测定重金属铜

摘要

A series of tests were carried out on the indexes of repeatability, accuracy, detection limit, span drift, ion interference, and standard recovery of heavy metal copper by using miniature photoelectric automatic monitoring instrument. The results indicated that repeatability error, accuracy and span drift were less than 5 %, detection limit is 0.032 mg/L. 4 kinds of ions have some interference to copper, the recovery of standard addition was between 91.0 %~98.4 %. miniature photoelectric automatic monitoring instrument is applied to suitable for environmental emergency accidents and water quality automatic monitoring stations.%运用微型光电重金属水质自动监测仪对重金属铜进行重现性、准确度、检出限、量程漂移、离子干扰、加标回收等指标的一系列测试,结果表明,重现性误差、准确度误差和量程漂移均小于5 %,该仪器的检出限为0.0101 mg/L.离子干扰低量程中,4种离子在低量程中对铜存在一定的干扰.加标回收率在91.0 %~98.4 %之间.基本能实现测定的稳定性,可应用于环境应急突发事故和水质自动监测站.