餐具净漂洗后残留洗涤剂含量的检测

Detection of Detergent Residue after Dishwashing

对用餐具净(洗洁精)洗涤后的两次漂洗水和碗上残留液进行收集、浓缩,采用红外光谱法进行分析检测,再通过谱图解析对比,来判定洗涤剂是否有残留,最终建立了一种准确性高、简便可靠、适用性广的检测方法。通过测定重复性、检出限,验证了餐具净洗后洗涤剂残留的检测方法。实验结果表明重复性良好,其检出限为0.0005%。

The two rinsing waters and its residual liquid,after being washed with tableware detergent,were collected and concentrated,and analyzed by infrared spectroscopy,through spectrogram analysis and comparison to determine whether the detergent remained.Finally,a detection method with high accuracy,simplicity,reliability and wide applicability was established.By measuring the repeatability and the detection limit,the detection method of the detergent residue after the dishwashing was verified.The experimental results showed that the repeatability was good,and the detection limit was 0.0005%.