An approach has been made in this work to analyze sensitivity drift in a Pd decorated SnO₂ sensor developed for detection of linalool, a significant aroma compound in tea.  Prior to the drift analysis, an attempt has been made to choose the optimum loading percentage of Pd in SnO₂ for linalool sensing.  An inexpensive and simplistic hydrothermal method has been used to develop five different Pd decorated SnO₂ sensors (0.5 wt%, 2 wt%, 5 wt%, 6 wt% and 8 wt%) and compare their sensitivities when exposed to linalool vapour. The analysis has shown that 6 wt% exhibits better sensitivity (62.7%) towards Linalool at a relatively lower temperature (100 °C) as compared to all the other synthesized sensors. Henceforth, extensive experiments has been performed on the 6 wt% Pd decorated SnO₂ sensor for a period of one month to analyze its stability. Relative standard deviation and principal component analysis based drift analysis has been performed to understand its changing attributes under repeated measurements.

中文翻译：

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基于钯的SnO2芳樟醇传感器的漂移分析

在这项工作中，已经采取了一种方法来分析为检测芳樟醇（一种茶叶中的重要香气成分）而开发的，装饰有钯的SnO ₂传感器的灵敏度漂移。在进行漂移分析之前，已尝试选择用于芳樟醇传感的SnO ₂中Pd的最佳负载百分比。一种廉价且简单的水热方法已用于开发五种不同的Pd装饰的SnO ₂传感器（0.5 wt％，2 wt％，5 wt％，6 wt％和8 wt％），并比较它们在暴露于芳樟醇蒸汽中的敏感性。分析表明，与所有其他合成传感器相比，在相对较低的温度（100°C）下，6 wt％的化合物对芳樟醇的敏感性更高（62.7％）。今后，已经对装饰有6 wt％Pd的SnO ₂传感器进行了为期一个月的广泛实验，以分析其稳定性。已经进行了基于相对标准偏差和主成分分析的漂移分析，以了解其在重复测量下的变化属性。