Periago J F, Zambudio A, Prado C
Gabinete de Seguridad e Higiene en el Trabajo de la Región de Murcia, El Palmar, Spain.
J Chromatogr A. 1997 Aug 22;778(1-2):263-8. doi: 10.1016/s0021-9673(97)00390-7.
The volume of gasoline sold in refuelling operations and the ambient temperature, can increase significantly the environmental levels of aromatic hydrocarbon vapours and subsequently, the occupational risk of gasoline service station attendants, specially in the case of benzene. We have evaluated the occupational exposure to aromatic hydrocarbons by means of personal-breathing-zone samples of gasoline vapours in a service station attendant population. This evaluation was carried out using diffusive samplers, in two periods at quite different temperatures (March and July). A significant relationship between the volume of gasoline sold during the shift and the ambient concentration of benzene, toluene, and xylenes was found for each worker sampled. Furthermore a significant difference was found between the time-weighted average concentration of aromatic compounds measured in March, with ambient temperatures of 14-15 degrees C and July, with temperatures of 28-30 degrees C. In addition, 20% of the population sampled in the last period were exposed to a time-weighted average concentration of benzene above the proposed Threshold Limit Value of 960 micrograms/m(3) of the American Conference of Governmental Industrial Hygienists (ACGIH).
加油作业中售出的汽油量以及环境温度，会显著提高芳烃蒸气的环境水平，进而增加加油站工作人员的职业风险，尤其是苯带来的风险。我们通过采集加油站工作人员个人呼吸带的汽油蒸气样本，评估了他们对芳烃的职业暴露情况。此次评估使用扩散采样器，在两个温度差异较大的时间段（3月和7月）进行。对于每个采样工人，都发现其当班期间售出的汽油量与苯、甲苯和二甲苯的环境浓度之间存在显著关系。此外，还发现3月（环境温度为14 - 15摄氏度）和7月（温度为28 - 30摄氏度）所测得的芳烃化合物时间加权平均浓度存在显著差异。此外，在上一时间段采样的人群中，有20%的人接触的苯时间加权平均浓度高于美国政府工业卫生学家会议（ACGIH）提议的960微克/立方米的阈限值。
