职业暴露风险评估是识别工作场所存在的职业危害,评价这些危害引起人身伤害可能性的一个过程。目前国际上不同国家对风险评估的基本理论相似,均以危害程度分级、暴露分级和发生概率为基础,评价方法一般分为定性、定量与半定量等。我们借鉴针对有害化学物质的职业暴露半定量健康风险分析方法并通过应用实例对这一方法加以阐述。 Occupational exposure risk assessment is a process of identifying occupational hazards in the workplace and evaluating the potential for these hazards to cause personal injury. At present, different countries in the world have similar risk assessment basic theories, which are based on hazard classification, exposure classification and probability of occurrence, and evaluation methods are generally classified into qualitative, quantitative and semi-quantitative. We draw on semi-quantitative health risk analysis methods for occupational exposure to hazardous chemical substances and illustrate this method through application examples.