Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-6367-2018 |
Amines in boreal forest air at SMEAR II station in Finland | |
Hemmila, Marja1; Hellen, Heidi1; Virkkula, Aki1,2; Makkonen, Ulla1; Praplan, Arnaud P.1; Kontkanen, Jenni2; Ahonen, Lauri2; Kulmala, Markku2; Hakola, Hannele1 | |
2018-05-04 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:9页码:6367-6380 |
文章类型 | Article |
语种 | 英语 |
国家 | Finland |
英文摘要 | We measured amines in boreal forest air in Finland both in gas and particle phases with 1 h time resolution using an online ion chromatograph (instrument for Measuring AeRosols and Gases in Ambient Air - MARGA) connected to an electrospray ionization quadrupole mass spectrometer (MS). The developed MARGA-MS method was able to separate and detect seven different amines: monomethylamine (MMA), dimethylamine (DMA), trimethylamine (TMA), ethylamine (EA), diethylamine (DEA), propylamine (PA), and butylamine (BA). The detection limits of the method for amines were low (0.2-3.1 ng m(-3)), the accuracy of ICMS analysis was 11-37 %, and the precision 10-15 %. The proper measurements in the boreal forest covered about 8 weeks between March and December 2015. The amines were found to be an inhomogeneous group of compounds, showing different seasonal and diurnal variability. Total MMA (MMA(tot)) peaked together with the sum of ammonia and ammonium ions already in March. In March, monthly means for MMA were <2.4 and 6.8 +/- 9.1 ng m(-3) in gas and aerosol phases, respectively, and for NH3 and NH4+ these were 52 +/- 16 and 425 +/- 371 ng m(-3), respectively. Monthly medians in March for MMA(tot), NH3, and NH4+ were <2.4, 19 and 90 ng m(-3), respectively. DMA(tot) and TMA(tot) had summer maxima indicating biogenic sources. We observed diurnal variation for DMA(tot) but not for TMA(tot). The highest concentrations of these compounds were measured in July. Then, monthly means for DMA were <3.1 and 8.4 +/- 3.1 ng m(-3) in gas and aerosol phases, respectively, and for TMA these were 0.4 +/- 0.1 and 1.8 +/- 0.5 ng m(-3). Monthly medians in July for DMA were below the detection limit (DL) and 4.9 ng m(-3) in gas and aerosol phases, respectively, and for TMA these were 0.4 and 1.4 ng m(-3). When relative humidity of air was >90 %, gas-phase DMA correlated well with 1.1-2 nm particle number concentration (R-2 = 0.63) suggesting that it participates in atmospheric clustering. EA concentrations were low all the time. Its July means were < 0.36 and 0.4 +/- 0.4 ng m(-3) in gas and aerosol phases, respectively, but individual concentration data correlated well with monoterpene concentrations in July. Monthly means of PA and BA were below detection limits at all times. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000431458800007 |
WOS关键词 | CHROMATOGRAPHY-MASS SPECTROMETRY ; INORGANIC AEROSOL MEASUREMENTS ; PARTICLE-SIZE MAGNIFIER ; SCOTS PINE FOREST ; ION CHROMATOGRAPHY ; SULFURIC-ACID ; ATMOSPHERIC AMINES ; PARTICULATE MATTER ; SEMICONTINUOUS GAS ; AROMATIC-AMINES |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/17329 |
专题 | 地球科学 |
作者单位 | 1.Finnish Meteorol Inst, POB 503, FIN-00101 Helsinki, Finland; 2.Univ Helsinki, Inst Atmospher & Earth Syst Res Phys, Fac Sci, POB 64, FIN-00014 Helsinki, Finland |
推荐引用方式 GB/T 7714 | Hemmila, Marja,Hellen, Heidi,Virkkula, Aki,et al. Amines in boreal forest air at SMEAR II station in Finland[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(9):6367-6380. |
APA | Hemmila, Marja.,Hellen, Heidi.,Virkkula, Aki.,Makkonen, Ulla.,Praplan, Arnaud P..,...&Hakola, Hannele.(2018).Amines in boreal forest air at SMEAR II station in Finland.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(9),6367-6380. |
MLA | Hemmila, Marja,et al."Amines in boreal forest air at SMEAR II station in Finland".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.9(2018):6367-6380. |
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