Poly (o‐anisidine) (PoANI) and PoANI doped with nickel oxide and zinc oxide were evaluated as sensing materials for four gas analytes (methanol, ethanol, acetone, and benzene). The sensing materials had high sensitivity (showing an affinity towards the target analytes even at low concentrations, in the range of 1‐5 ppm), but rather poor selectivity, especially when the gas analytes were in a mixture. To exploit the poor selectivity, the three sensing materials were combined into a sensor array using principal component analysis (PCA) as a sensing algorithm. It was found that using a sensor array, the four individual gases could be separated. However, when all four gases were present (in analyte mixtures), there was too much overlap in the responses to distinguish between individual gas analytes and their related mixtures.

中文翻译：

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评估掺杂和未掺杂的聚（茴香胺）作为挥发性有机化合物传感器阵列的传感材料

保利（Ø茴香胺（PoANI）和掺杂有氧化镍和氧化锌的PoANI被评估为四种气体分析物（甲醇，乙醇，丙酮和苯）的传感材料。传感材料具有很高的灵敏度（即使在低浓度（1-5 ppm范围内）也显示对目标分析物的亲和力），但选择性很差，尤其是当气体分析物为混合物时。为了利用差的选择性，将三种传感材料使用主成分分析（PCA）作为传感算法组合成一个传感器阵列。发现使用传感器阵列可以分离四种气体。但是，当所有四种气体都存在时（在分析物混合物中），响应中有太多重叠，无法区分各个气体分析物及其相关混合物。