我国北方地区固体燃料大量使用，造成了室内空气严重污染，对人体健康具有潜在危害。虽然有不少研究已证实固体燃料燃烧导致极高的个体PM2.5暴露水平，并增加心血管疾病风险。但对于血压值与PM2.5个体暴露水平的关系还尚未明确；尤其缺乏对不同固体燃料使用导致不同程度人群健康风险的研究。本项目拟以我国山西省东南地区黎城县为目标区域，选取90-100户使用不同固体燃料的家庭，分取暖期和非取暖期两个阶段进行入户调查与PM2.5采样，同时测定受试人群的血压值。通过实验室分析明确不同固体燃料引起的PM2.5浓度差异，结合人群血压水平变化，利用混合效应模型对数据进行整合分析。本项目旨在揭示不同固体燃料燃烧与PM2.5个体暴露浓度的定量关系及影响因素；个体PM2.5暴露浓度与血压水平的定量关系，从而为以改善室内空气污染与人群健康为目标，推进清洁能源的使用提供理论基础。

Owing to the wide-spread consumption of solid fuels in northern China, the household air is severely contaminated with high concentration of PM2.5, which will induce potential health risk on human beings. Many studies have demonstrated that solid fuel using can make high exposure to PM2.5 and high mortality of cardiovascular diseases. However, till now, the association between the PM2.5 exposure level and blood pressure level has not been revealed clearly, especially lacking of the association between household air pollution from various solid fuels using and health risks. Thus, in this study, a typical area in northern China (Licheng county, in the southeast of Shanxi province) where solid fuels were widely used will be selected. In the studied area, 90-100 households with different solid fuels will be selected. We will make a questionnaire survey, 24-hour PM2.5 collection (household air and personal air) and the blood pressures (systolic pressure and diastolic pressure) during two periods (heating and non-heating). The concentration of PM2.5 will be measured in laboratory and the Mixed-effect Model will be used for the association analysis for PM2.5 levels and blood pressure levels. We aim to reveal the quantitative relationship between various solid fuel using and the levels of personal exposure to PM2.5 and the influencing factors, and also aim to discover the association between the levels of personal exposure to PM2.5 and blood pressure levels and the influencing factors. Therefore, the study will put forward a solid theoretical foundation for clean fuel intervention programs.