成都盾源除甲醛公司怎么样

  中美空气质量指数(AQI)对比研究及启示高庆先1<!--[if !vml]--><!--[endif]-->, 成都盾源除甲醛公司怎么样刘俊蓉1,2, 李文涛1,2, 高文康3摘要:对中美两国空气质量指数(AQI),特别是颗粒物分指数进行了对比研究,并利用2013年4月至12月期间,中国环境监测总站发布的环境空气质量监测数据,开展了典型大气污染过程的分析.

成都盾源除甲醛公司怎么样

  结果表明

  中国环境空气质量标准的研究、制订和发布起步虽晚但发展很快,所包含的污染物指标更全面,能够客观地反映出中国空气污染的特征,也更贴近居民对空气质量的切身感受;

  中美计算颗粒物小时AQI采用的方法不同,对比发现中国采用颗粒物24 h平均浓度限值代替1 h平均浓度限值的计算方法会将污染等级倾向于严重化;

  中国在计算颗粒物AQI时设定的颗粒物浓度限值存在一定的问题,导致AQI<200时,PM2.5/PM10的比值出现与实际不符的现象;

  对奥体中心监测点数据分析显示,AQI成都盾源除甲醛公司怎么样<50时,PM2.5/PM10比值小于0.5,且PM2.5/PM10的比值随着污染指数等级的增大而增大.

  建议尽早修订和调整颗粒物实时报的浓度限值和计算方法.

  关键词: 空气质量指数 分级浓度限值 环境空气质量标准 PM2.5 PM10

  Comparative Analysis and Inspiration of Air Quality Index Between China and America

  GAO Qing-xian1<!--[if !vml]--><!--[endif]-->, LIU Jun-rong1,2, LI Wen-tao1,2, GAO Wen-kang3

  Abstract:

  Research on the differences of air quality index (AQI) especially AQI

  of particulate matters between China and America and analysis of hourly

  monitored readings from April to December in 2013 released by

  Environmental Monitoring Station of China indicated that: ① Although

  China lagged behind America in formulating and publishing of AQI

  standards, the AQI standards published in 2012 in China covered more

  pollutant indexes than before and could objectively reflect the

  characteristics of air pollution in China, and were more close to the

  residens's feeling about air quality. ②The methods adopted for

  calculation of particulate matter hourly AQI were different in China and

  America, and the comparison revealed that the calculation method

  adopted by China using the 24 h average concentration breakpoint of

  particulate matters to replace the 1 h average concentration breakpoint

  would enhance the severity of the pollution level. ③ The breakpoint of

  PM2.5-24 h in China was less rigorous than that in America when

  AQI<200, which led to the inconsistence between the ratio of

  PM2.5/PM10 and the real situation in China. ④Analysis on the monitoring

  readings from station of Beijing Olympic Sports Center showed that when

  AQI<50, the ratio of PM2.5/PM10 was less than 0.5 and increased with

  the increasing of AQI. Correction and adjustment of particulate matter

  real-time calculation method and breakpoints of PM2.5 and PM10 were

  suggested in China.

  Key words: air quality index (AQI) breakpoints ambient air quality standards PM2.5 PM10

  环境空气质量标准的建立,成都盾源除甲醛公司怎么样可以为环境空气质量管理、保护人体健康、维护生态环境安全,促进人与社会、自然和谐可持续发展发挥积极作用[1,

  2]. 20世纪70年代,美国最先构建了污染标准指数(pollution standards

  index,PSI),将多个污染物的信息整合在一个指标体系中,通过发布污染标准指数,指导人们的日常生活行为[3].

  随后,世界各国基于各自的空气质量状况陆续建立了适合本国特色的空气质量指数发布系统,如中国的API (air pollution index

  )和AQI(air quality index),美国的PSI和AQI,英国的每日空气质量指数(daily air quality

  index,DAQI),澳大利亚的区域污染指数(regional pollution

  index,RPI)及澳大利亚新南威尔士州的区域环境空气质量指数(regional air quality index,RAQI)等[4].

  目前,成都盾源除甲醛公司怎么样空气污染成为中国政府部门和普通老百姓关注的热点,很多学者对中国环境空气质量评价进行了相关研究,并提出了目前存在的问题和改进建议[5,

郑重声明:本文版权归成都老猫盒子所有,转载文章仅为传播更多信息之目的,如有不便,请第一时间联系我们修改或删除,多谢。