國家環境空氣品質標準制定之目的是為保障國民健康，增進公共福址為目的，本文提出未來我國環境空氣品質標準之展望，內容除了目前之標準制定程序外，尚包括衝擊評估和成本效益分析；文中並提出採用安全數於高危險群之必要性，以及保護最大多數人群之考量，是由經濟、社會及政治因素所綜合決定的；未來國家空氣品質之目標，是在達成階段標凖即：能忍受水準、可能接受水準以後，完成理想水準之目標。分析未來10年內我國空氣品質標準可能增列之項目有粒徑2µm~5µm之間的懸浮微粒，多環芳香族碳氫化合物及苯，可能被刪除之項目則為鉛。文中並提出各空氣污染物之未來標準以為參考。

The purpose of this study is to evaluate and discuss the future standard setting for the national ambient air quality. The goal of the standard is to safeguard human health and promote public welfare. In this article we proposed the procedure of standard setting, including the economic impacts and cost/benefit analysis of the regulations. We also brought forward the definition of adverse health effect and non-health adverse effect taken in the secondary standard. The primary standard allows a margin of safety to protect more sensitive segments of the population. In this study, we suggested three standard levels to comply with: the tolerable level, the acceptable level and the desirable level. We perspected that the poly-aromatic hydrocarbons, PM2-5 and benzene would become criteria pollutants in air quality standard, but lead would be ruled out.

環境空氣品質標準 ； 標準制定 ； 不良健康效應

ambient air quality, standard setting, adverse health effect