流动注射法测定红酒中总氰化物的不确定度评定

建立了应用AA3流动注射仪测定葡萄酒中氰化物的分析方法:酒样(由自动进样器采集)及试剂在蠕动泵的推动下,于密闭的管路中通过分析模块发生完全的化学反应后,进入流动检测池进行光度检测,由数据处理系统自动处理分析数据;并且系统地分析了整个检测过程的不确定度来源,对各个不确定度分量进行量化。结果显示:在0~22.40μg/L线性区间内该方法具有线性关系好,较高的精密度和准确度,以及较低的检出限0.037μg/L和不确定度的量化结果。结论:首次建立了应用AA3流动注射仪测定葡萄酒中氰化物的分析方法,与传统异烟酸-吡唑啉酮分光光度法相比,该方法具有自动进样、分析速率快、试剂耗量低等优点。

Determination of Trace Cyanide in Wine with AA3 Flow Injection Method

A method was developed for determination cyanide in wine with Bran ＋ Luebbe AutoAnalyzer 3 （ AA3 ） Flow injection. Wine samples （entered by an autocollective machine） and reagent while wriggling the push of pump, got in to flow examination pond to carry on an intensity of light examination after passing analysis mold piece to take place complete chemical reaction in tube road of closeness, handled an analysis data automatically from data processing system. The sources of uncertainties, quantitatively analyzed each of the uncertainties were investigated. The method was linear to the calibration graphs, higher precision and accuracy within 0 - 22. 40 μg/L aniline concentration. The lower detection limit was 0. 037 μg/L. The uncertainty quantification results were proposed. This method of determination of trace cyanide in wine was established for the first time. Compared with the conventional isonieotinic acid 3 - methy - 1 - pheny 1 - 5 - pyrazolone spectrophotometry method, the advantages of the method were auto -sampling, rapid analysis speed and lower reagent consumption, etc.