Atmospheric concentrations of BTEX were measured in an urban site located in the vicinity of an oil storage-distribution facility in Paraiso, Tabasco, Mexico. Samples were collected during two seasons (nortes 2018 and dry 2019). The relative abundance of BTEX mean concentrations was: toluene (5.24 µg m⁻³) > ethylbenzene (3.92 µg m⁻³) > m, p-xylene (3.89 µg m⁻³) > benzene (2.43 µg m⁻³). BTEX concentrations had a clear diurnal and seasonal pattern, showing higher levels during the dry season due to differences in wind conditions, rainfall patterns and temperature. Statistical analysis showed significant positive correlations among BTEX, indicating that these compounds had common sources. Interspecies ratios revealed that BTEX were originated from sources beyond vehicular traffic and that they were influenced by the transport of local air masses. The assessment of lifetime cancer risk showed that the population in the study area is at possible risk of developing cancer.

BTEX 的大气浓度是在位于墨西哥塔巴斯科州帕拉伊索的石油储存分配设施附近的一个城市地点测量的。在两个季节（2018 年北部和 2019 年干燥）期间收集了样本。BTEX 平均浓度的相对丰度为：甲苯 (5.24 µg m ^-3 ) > 乙苯 (3.92 µg m ^-3 ) > m，对二甲苯 (3.89 µg m ^-3 ) > 苯 (2.43 µg m ^-3）。BTEX 浓度具有明显的昼夜和季节性模式，由于风况、降雨模式和温度的差异，在旱季显示出更高的浓度。统计分析显示BTEX之间存在显着的正相关，表明这些化合物具有共同的来源。种间比率显示，BTEX 起源于车辆交通以外的来源，并且受到当地气团运输的影响。对终生癌症风险的评估表明，研究区的人群可能面临患癌症的风险。