Insulation and Evaporative Resistance of Clothing for Sugarcane Harvesters and Chemical Sprayers, and Their Application in PHS Model-Based Exposure Predictions
Insulation and Evaporative Resistance of Clothing for Sugarcane Harvesters and Chemical Sprayers, and Their Application in PHS Model-Based Exposure Predictions
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DOI：
10.3390/ijerph17093074
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发表时间：
2020-05-01
影响因子：
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通讯作者：
Lucas, Rebekah A., I
中科院分区：
文献类型：
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作者：
Kuklane, Kalev;Toma, Robert;Lucas, Rebekah A., I
许多工人暴露在热应激下，这种应激可能会因他们穿的衣服类型而加剧。由此产生的热应变可能导致短期或长期的热相关疾病。本研究旨在测量甘蔗田间作业工人的服装性能，并采用国际标准预测热应变模型（PHS）评估热应变。通过暖体假人测量，获得了甘蔗收割机和化学喷雾器服装的整体、局部和特定部位的服装隔热和蒸发阻力值。身体部位的详细服装隔热值可用于先进的热生理模型，而在本研究中，整个身体的值与天气数据一起用于PHS。计算了在一个工作日和一系列高湿度情况下逐小时预测的估计持续时间有限暴露时间（DLE）。这种评估工具可用于风险评估和管理，以支持组织措施，并在炎热天气事件中准备设备和材料，以避免脱水和其他与热有关的疾病。
Many workers are exposed to heat stress that can be exacerbated by the type of clothing they wear. The resulted heat strain can lead to short or long-term heat-related disorders. This study aimed to measure clothing properties of sugarcane field workers and evaluate the heat strain by an international standard, predicted heat strain model (PHS). The clothing thermal insulation and evaporative resistance values of sugarcane cutter and chemical sprayer outfits were acquired for the whole body, body regions and specific body parts via thermal manikin measurements. The detailed clothing insulation values of body parts can be utilized in advanced thermo-physiological models, while in this study, the values for the whole body together with weather data were used in PHS. Estimated duration limited exposure times (DLE) for an hour-by-hour prediction over a workday and for a range of high humidity scenarios were calculated. Such evaluation tools can be used for risk assessment and management to support organizational measures and prepare equipment and materials in the case of hot weather events in order to avoid dehydration and other heat-related disorders.