游泳池水中氰尿酸快速检测仪性能评价

Performance evaluation of cyanuric acid rapid detector in pool water

对游泳池水中氰尿酸快速检测仪的反应时间、线性、试剂批次、不同操作人员对检测结果的影响,以及仪器波长示值误差和重复性、仪器示值误差和重复性以及样品加标回收率等性能指标进行了系统的考察。实验结果表明:氰尿酸在20.0~100.0 mg/L检测范围内时,检测仪标准曲线的线性相关系数r大于0.9998;不同批次试剂检测相对误差小于±5%;不同操作人员检测同一样品的相对误差小于±10%;3台检测仪波长示值误差范围为-0.05 nm~0.53 nm,波长重复性范围为0.02 nm~0.05 nm;3台仪器设备对20.00 mg/L和50.00 mg/L两浓度标准溶液测定的示值误差均小于±5%,重复性均小于5%;水样的低、中、高浓度加标回收率范围为86.3.0%~111.6%。

The main performance indicators, including reaction time, linearity, different reagent batches, different operators, as well as wavelength indication error and repeatability of instrument and recovery of the sample, were systematically studied. The results showed that the linear correlation coefficient of the standard curve was greater than 0.9998 and the relative error of different batches was in the range of-5%—5% in the detection range of 20.0 mg/L—100.0 mg/L;the relative error of the same sample tested by different operators was in the range of-10%—10%;the error ranges of wavelength indication and wavelength repeatabilities of three detectors were-0.05 nm—0.53 nm and 0.02 nm—0.05 nm, respectively;the indication errors of three instruments in the determination of 20.00 mg/L and 50.00 mg/L standard solutions were both in the range of-5%—5%, the repeatabilities were both less than 5%;the recoveries of water samples with three spiked levels were 86.3%—111.6%.