一种古蔡氏二氧化硫快速检测装置与检测方法的研究

Study on a Gutzeit's test rapid detection device and method of sulfur dioxide

目的设计一种古蔡氏法检测二氧化硫的快速检测装置,幵建立一种二氧化硫的快速检测方法。方法设计的反应装置包括反应瓶、反应瓶盖与醋酸铅试纸。依托该装置建立了一种二氧化硫的快速检测方法。结果本研究建立的方法检测时间<30min,假阳性率<6%,假阴性率0%,特异性>94%,灵敏度100%,检出限为3mg/kg。结论该检测装置具有检测结果准确,操作简单,适用范围广和抗干扰能力强的优点,可直接用于食品、中药材与中药饮片中二氧化硫的快速检测。

Objective To design a Gutzeit’s test rapid detection device of sulfur dioxide,and establish a rapid determination method for sulfur dioxide.Methods The reaction device was designed including a reaction bottle,a reaction cap and a lead acetate test paper.Relying on this device,the rapid detection method of sulfur dioxide was established.Results The detection time of the method established in this study was less than 30 min,the false positive rate was less than 6%,the false negative rate was 0%,the specificity was more than 94%,the sensitivity was100%,and the limit of detection was 3 mg/kg.Conclusion This detection device has the advantages of accurate test results,simple operation,wide application range and strong anti-interference ability,which can be directly used for the rapid detection of sulfur dioxide in food,Chinese herbal medicine and Chinese herbal decoction tablets.