A full-factorial experimental design (2^4) was performed to study the impact of the sampling and handling processes on the analysis of gasoline samples. Four independent variables were selected based on the most critical parameters to control during sampling. Vapor pressure determination and distillation curve were chosen as response variables, and the data collected were assessed by analysis of variance as a statistical approach. There were statistically significant differences related to the sample container’s material and the sample’s storage time in the laboratory before the analysis. Also, the measurement variance was estimated at 0.11 from the contributions of the variance of the sampling process and the variance of the analysis process considering vapor pressure results (kPa), which allows the evaluation and control of the random error associated with the sampling process.

进行了全因子实验设计 (2^4)，以研究采样和处理过程对汽油样品分析的影响。根据采样期间要控制的最关键参数选择了四个自变量。选择蒸气压测定和蒸馏曲线作为响应变量，并通过方差分析作为统计方法对收集的数据进行评估。分析前样品容器的材料和样品在实验室的储存时间存在统计学上的显着差异。此外，根据采样过程方差和考虑蒸气压结果 (kPa) 的分析过程方差的贡献，将测量方差估计为 0.11，从而可以评估和控制与采样过程相关的随机误差。