Respiratory symptoms and lung function in relation to wood dust and monoterpene exposure in the wood pellet industry.
Respiratory symptoms and lung function in relation to wood dust and monoterpene exposure in the wood pellet industry.
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DOI：
10.1080/03009734.2017.1285836
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发表时间：
2017-06
影响因子：
3.4
通讯作者：
Rask-Andersen A
中科院分区：
文献类型：
--
作者：
Löfstedt H;Hagström K;Bryngelsson IL;Holmström M;Rask-Andersen A
木颗粒被用作用于加热目的的可再生能源。常见的接触物是木屑和单萜，已知它们对呼吸道有害。本研究的目的是研究职业暴露对木屑颗粒工人呼吸健康的影响。对 6 家工厂从事木屑颗粒生产的 39 名工人进行了调查，包括问卷调查、体检、过敏筛查、肺量测定和鼻峰呼气流量 (鼻 PEF)。测量了木屑和单萜的暴露情况。与普通人群的对照组相比，木屑颗粒工人报告的鼻部症状、干咳和哮喘药物的出现频率更高。工作时间和休闲时间的鼻 PEF 没有差异。注意到肺功能低于预期（肺活量 [VC]，95%；1 秒用力肺活量 [FEV1]，预测值的 96%），但在轮班期间未发现任何变化。肺功能与颗粒生产工作年限之间没有相关性。工作中木尘的个人测量显示浓度很高（0.16–19mg/m3），并且在执行某些工作任务时暴露达到峰值。单萜水平较低（0.64–28mg/m3）。暴露与急性肺功能影响之间没有关联。在这项针对木屑颗粒工人的研究中，观察到高含量的木屑，这可能对气道产生负面影响，因为研究组报告的上呼吸道症状和干咳比预期更频繁。木屑颗粒工人的 VC 和 FEV1 均低于预期。没有发现交叉班次变化。
Wood pellets are used as a source of renewable energy for heating purposes. Common exposures are wood dust and monoterpenes, which are known to be hazardous for the airways. The purpose of this study was to study the effect of occupational exposure on respiratory health in wood pellet workers. Thirty-nine men working with wood pellet production at six plants were investigated with a questionnaire, medical examination, allergy screening, spirometry, and nasal peak expiratory flow (nasal PEF). Exposure to wood dust and monoterpenes was measured. The wood pellet workers reported a higher frequency of nasal symptoms, dry cough, and asthma medication compared to controls from the general population. There were no differences in nasal PEF between work and leisure time. A lower lung function than expected (vital capacity [VC], 95%; forced vital capacity in 1 second [FEV1], 96% of predicted) was noted, but no changes were noted during shifts. There was no correlation between lung function and years working in pellet production. Personal measurements of wood dust at work showed high concentrations (0.16–19 mg/m3), and exposure peaks when performing certain work tasks. Levels of monoterpenes were low (0.64–28 mg/m3). There was no association between exposure and acute lung function effects. In this study of wood pellet workers, high levels of wood dust were observed, and that may have influenced the airways negatively as the study group reported upper airway symptoms and dry cough more frequently than expected. The wood pellet workers had both a lower VC and FEV1 than expected. No cross-shift changes were found.