基于AERSCREEN模式的山西省焦化企业苯并a芘防护距离估算及影响分析

摘要

Coking plants were studied in Shanxi Province in 2012.Benzo[a]pyrene(BAP)protection distance was estimated for 249 coking plants based on AERSCREEN model.The impacts on peripheral people by coking plants BAP emission were analyzed associated with public opinion data.Results showed that 11 prefecture-level cities in Shanxi Province all had coking plants,converged in the central and southwestern parts.Yuncheng City had the most coking plants,Lyuliang City owned the most BAP annual emission,and Taiyuan City had most public opinion records. The total land area of Shanxi Province was 159 800 km2.The land area in BAP protection distance covered 17 900 km2,accounting for 11.20%.The percentage of land area in BAP protection distance to total land area of Taiyuan City,Linfen City,Changzhi City,Jinzhong City and Lyuliang City exceeded mean level.Public opinion records and occurrence locations were associated with not only local coking plants(including BAP annual emission and BAP protection distance)distribution,but also people's environmental protection awareness and peripheral coking plants (including BAP annual emission and BAP protection distance)distribution.Besides,the uncertainty of the results was discussed.%以2012年山西省焦化企业为研究对象,采用 AERSCREEN 模式估算了249个焦化企业的苯并[a]芘(BAP)防护距离,并结合舆情数据分析了焦化企业BAP排放对周边人群的影响.结果显示,山西省11个地级市都有焦化企业分布,主要集中在中部和西南部地区,其中运城市焦化企业数最多、吕梁市 BAP 年排放量最大、太原市舆情条数最多.山西省土地总面积为15.98万km2,其中焦化企业BAP防护距离内面积为1.79万km2,占比为11.20%,其中太原市、临汾市、长治市、晋中市和吕梁市5个地级市的BAP防护距离内面积占比超过平均水平.舆情点位及条数不仅与本地焦化企业(包括BAP年排放量和BAP防护距离)分布有关,而且还与人群的环保意识以及周边地区的焦化企业(包括BAP年排放量和BAP防护距离)分布有关.此外,还对结果的不确定性进行了讨论.