环境监测管理与技术
環境鑑測管理與技術
배경감측관리여기술
THE ADMINISTRATION AND TECHNIQUE OF ENVIRONMENTAL MONITORING
2013年
5期
11-14
,共4页
黑炭气溶胶%浓度变化%常州市
黑炭氣溶膠%濃度變化%常州市
흑탄기용효%농도변화%상주시
Black carbon%Aerosol%Changzhou
根据常州市2012年9月-2013年1月的黑炭气溶胶（ Black Carbon ，以下简称BC）在线监测数据及常规气象资料，分析了BC在秋冬季不同时间段的变化特征及气象要素对BC的影响。结果表明，常州秋冬季BC平均值为5．17（1．48～17．02）μg/m3，主要集中在1．00μg/m3～7．50μg/m3，冬季较高于秋季，小时均值最大值达33．87μg/m3；BC本底值为3．50μg/m3；1月份BC日均值变化幅度最大，发生高污染的频率最高。 BC的日变化具有明显的双峰结构，一天中最大浓度多出现在上午06：00-09：00，特殊天气条件下，BC小时值存在不同的分布情况；BC在不同风向的输送条件下有明显的不同，偏东北方向过来的气团易造成BC高污染。
根據常州市2012年9月-2013年1月的黑炭氣溶膠（ Black Carbon ，以下簡稱BC）在線鑑測數據及常規氣象資料，分析瞭BC在鞦鼕季不同時間段的變化特徵及氣象要素對BC的影響。結果錶明，常州鞦鼕季BC平均值為5．17（1．48～17．02）μg/m3，主要集中在1．00μg/m3～7．50μg/m3，鼕季較高于鞦季，小時均值最大值達33．87μg/m3；BC本底值為3．50μg/m3；1月份BC日均值變化幅度最大，髮生高汙染的頻率最高。 BC的日變化具有明顯的雙峰結構，一天中最大濃度多齣現在上午06：00-09：00，特殊天氣條件下，BC小時值存在不同的分佈情況；BC在不同風嚮的輸送條件下有明顯的不同，偏東北方嚮過來的氣糰易造成BC高汙染。
근거상주시2012년9월-2013년1월적흑탄기용효（ Black Carbon ，이하간칭BC）재선감측수거급상규기상자료，분석료BC재추동계불동시간단적변화특정급기상요소대BC적영향。결과표명，상주추동계BC평균치위5．17（1．48～17．02）μg/m3，주요집중재1．00μg/m3～7．50μg/m3，동계교고우추계，소시균치최대치체33．87μg/m3；BC본저치위3．50μg/m3；1월빈BC일균치변화폭도최대，발생고오염적빈솔최고。 BC적일변화구유명현적쌍봉결구，일천중최대농도다출현재상오06：00-09：00，특수천기조건하，BC소시치존재불동적분포정황；BC재불동풍향적수송조건하유명현적불동，편동북방향과래적기단역조성BC고오염。
In order to study the pollution characteristics of the black carbon aerosol ( BC ) in autumn and winter in Changzhou , the variation characteristics of BC on different time scales and the effects of meteorological factors on the BC mass concentration were analyzed based on BC online monitoring data and the regular meteoro -logical data in Changzhou from September 2012 to January 2013 .The results showed that the average BC concen-tration during autumn and winter in Changzhou was 5.17 μg/m3 , with the range 1.48 μg/m3 ~17.02 μg/m3 . BC mass concentration was concentrated around the range 1.00μg/m3 ~7.50μg/m3 , with maximum hourly av-erage concentration of 33 .87 μg/m3 .In addition , the concentration of BC in winter was higher than that in au-tumn and the base BC mass concentration of this study area was about 3.50 μg/m3 based on the maximum fre-quency of hourly mean concentration .The biggest variation tendency of daily average BC mass concentration oc-curred in January , which was also the time of high pollution occurred frequently .The daily variation of BC mass concentration was characterized by a pronounced double peak pattern , and the highest value occurred more dur-ing 06:00-09:00 in a day.There can be different distribution of BC hourly mass concentration under special weather conditions .Different characteristics of BC mass concentration were observed for different wind directions that the air mass move from the northeast easy to result in high BC pollution .
