Assessing traffic meter attendants' exposures to traffic air pollutants and health effect.
Date Issued
2007
Date
2007
Author(s)
Hsieh, Yun-Lin
DOI
zh-TW
Abstract
Background: Till mid-July, 2006, traffic meter attendants in Taipei city have reached a number of 635. Eight hours working along the roadside and constantly exposing to traffic related pollution results in risks to these attendants who have the following occupational characteristic: Long-period exposure to traffic pollutants, closed to vehicles’ emission, and work duration that contains at least one rush hour.
Objective: We realize that traffic meter attendants might expose directly to air pollution for a long period. Therefore, we want to:
1. Assessing traffic meter attendants’ exposures to traffic air pollutants on ambient particles, CO and noise.
2. Discussing the adverse effects of cardiovascular and pulmonary system caused by traffic related pollutants.
Materials and methods: 24 female attendants were recruited in this research to complete a six-day air sampling and health monitoring. Ambient and indoor particles were separately monitored and collected at work and home. Inspection data of CO and noise dose were also gathered at work time. Outcome of air sampling will link to health effect to assess the impact of traffic related air pollution which includes PEFR, HRV (Heart rate variability), PWV (pulse wave velocity,) and also biomarkers of inflammations (CRP, fibrinogen, tPA, PAI-1, glucose and lipid profile).
Result and Conclusion: We found that in work time the average of PM2.5, and PM1 could were 61.3±20.0 μg/m3 and 55.1±19.7 μg/m3. Exposure of CO and noise could reach to 1.60±0.71 ppm and 73.4±8.0 dBA. When it comes to health outcome, morning and night PEFR were 360.25±79.27 L/min and 375.03±71.07 L/min, respectively. But no lag effect was examined after simulating by a linear mixed effect model. Day and week exposure of cardiovascular markers such as PWV, ABI and blood markers were also compare with baseline but no significant were discovered at all. Nevertheless, a simulate by mixed effect model found that PM2.5 and PM1.0 does do a significant damage to PWV and may cause more adverse effects to susceptive group.
Subjects
路邊停車收費員
暴露評估
心血管疾病
血管彈性
exposure assessment
traffic meter attendants
cardiovascular effects
pulse wave velocity
SDGs
Type
thesis
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