环境监控与预警
環境鑑控與預警
배경감공여예경
ENVIRONMENTAL MONITORING AND FOREWARNING
2014年
4期
1-5,16
,共6页
周炎%钟流举%岳玎利%曾立民%张涛
週炎%鐘流舉%嶽玎利%曾立民%張濤
주염%종류거%악정리%증립민%장도
挥发性有机化合物%臭氧生成潜势%来源解析%鹤山
揮髮性有機化閤物%臭氧生成潛勢%來源解析%鶴山
휘발성유궤화합물%취양생성잠세%래원해석%학산
VOCs%Ozone formation potential%Source apportionment%Heshan
2013年10月对广东鹤山大气中挥发性有机化合物(VOCs)变化特征、臭氧生成潜势和来源进行了研究。结果表明,观测期间测得的 VOCs总平均值为26.6×10-9,表现为烷烃>苯系物>烯烃;烯烃日间值变化幅度较大,在清晨达到最大值;苯系物与一次污染物 CO 的变化趋势十分接近;烷烃的峰值出现时间较苯系物有所提前,且在短时间内迅速升高,表明观测点周边可能存在排放源;大气中各类 VOCs的臭氧生成潜势(OFP)贡献表现为苯系物>烯烃>烷烃;从物种来看,乙烯等10种物质对总 OFP的贡献占到了80.4%;观测期间测得的 OFP贡献较大的 VOCs物种主要来源于石化源、油漆溶剂和汽油挥发源。
2013年10月對廣東鶴山大氣中揮髮性有機化閤物(VOCs)變化特徵、臭氧生成潛勢和來源進行瞭研究。結果錶明,觀測期間測得的 VOCs總平均值為26.6×10-9,錶現為烷烴>苯繫物>烯烴;烯烴日間值變化幅度較大,在清晨達到最大值;苯繫物與一次汙染物 CO 的變化趨勢十分接近;烷烴的峰值齣現時間較苯繫物有所提前,且在短時間內迅速升高,錶明觀測點週邊可能存在排放源;大氣中各類 VOCs的臭氧生成潛勢(OFP)貢獻錶現為苯繫物>烯烴>烷烴;從物種來看,乙烯等10種物質對總 OFP的貢獻佔到瞭80.4%;觀測期間測得的 OFP貢獻較大的 VOCs物種主要來源于石化源、油漆溶劑和汽油揮髮源。
2013년10월대엄동학산대기중휘발성유궤화합물(VOCs)변화특정、취양생성잠세화래원진행료연구。결과표명,관측기간측득적 VOCs총평균치위26.6×10-9,표현위완경>분계물>희경;희경일간치변화폭도교대,재청신체도최대치;분계물여일차오염물 CO 적변화추세십분접근;완경적봉치출현시간교분계물유소제전,차재단시간내신속승고,표명관측점주변가능존재배방원;대기중각류 VOCs적취양생성잠세(OFP)공헌표현위분계물>희경>완경;종물충래간,을희등10충물질대총 OFP적공헌점도료80.4%;관측기간측득적 OFP공헌교대적 VOCs물충주요래원우석화원、유칠용제화기유휘발원。
Atmospheric VOCs was measured at Heshan in October 2013.The variation pattern,ozone formation potential and emis-sion sources were analyzed.Average concentration of total VOCs observed was 26.6 ×10 -9 ,while alkane >BTEX >alkene.Con-centration of alkene peaked at early morning with large variations during the daytime;variation patterns of BTEX and CO were quite similar;concentration of alkane peaked earlier than BTEX and rised rapidly in a very short time,which indicated the influence of nearby emission sources.Ozone formation potential calculation by the speciated VOCs appeared as BTEX>alkene>alkane.10 key VOCs species including ethylene contributed 80.5% of total OFP;VOCs contributed most of OFP were mainly came from petroche-mistry,paint solvents and gasoline vapor during observation.