The first UK measurements of nitryl chloride using a chemical ionization mass spectrometer in central London in the summer of 2012, and an investigation of the role of Cl atom oxidation

被引：75

作者：

Bannan, Thomas J. ^{[1
]}

Booth, A. Murray ^{[1
]}

Bacak, Asan ^{[1
]}

Muller, Jennifer B. A. ^{[1
]}

Leather, Kimberley E. ^{[1
]}

Le Breton, Michael ^{[1
]}

Jones, Benjamin ^{[1
]}

Young, Dominique ^{[1
]}

Coe, Hugh ^{[1
]}

Allan, James ^{[1
,2
]}

Visser, Suzanne ^{[3
]}

Slowik, Jay G. ^{[3
]}

Furger, Markus ^{[3
]}

Prevot, Andre S. H. ^{[3
]}

Lee, James ^{[4
]}

Dunmore, Rachel E. ^{[4
]}

Hopkins, James R. ^{[4
,5
]}

Hamilton, Jacqueline F. ^{[4
]}

Lewis, Alastair C. ^{[4
,5
]}

Whalley, Lisa K. ^{[6
,7
]}

Sharp, Thomas ^{[6
]}

Stone, Daniel ^{[6
]}

Heard, Dwayne E. ^{[6
,7
]}

Fleming, Zoe L. ^{[8
]}

Leigh, Roland ^{[9
]}

Shallcross, Dudley E. ^{[10
]}

Percival, Carl J. ^{[1
]}

机构：

[1] Univ Manchester, Ctr Atmospher Sci, Sch Earth Atmospher & Environm Sci, Manchester, Lancs, England

[2] Univ Manchester, Natl Ctr Atmospher Sci, Manchester, Lancs, England

[3] Paul Scherrer Inst, Lab Atmospher Chem, Villigen, Switzerland

[4] Univ York, Wolfson Atmospher Chem Labs, York YO10 5DD, N Yorkshire, England

[5] Univ York, Natl Ctr Atmospher Sci, York YO10 5DD, N Yorkshire, England

[6] Univ Leeds, Sch Chem, Leeds LS2 9JT, W Yorkshire, England

[7] Univ Leeds, Sch Chem, Natl Ctr Atmospher Sci, Leeds LS2 9JT, W Yorkshire, England

[8] Univ Leicester, Dept Chem, Natl Ctr Atmospher Sci, Leicester LE1 7RH, Leics, England

[9] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England

[10] Univ Bristol, Sch Chem, Biogeochem Res Ctr, Bristol, Avon, England

来源：

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES | 2015年 / 120卷 / 11期

基金：

瑞士国家科学基金会;

关键词：

nitryl chloride; CIMS; PHOTOLYSIS FREQUENCIES; REACTIVE NITROGEN; BOUNDARY-LAYER; ACTINIC FLUX; AIR-QUALITY; CLNO2; N2O5; URBAN; CHEMISTRY; NITRATE;

D O I：

10.1002/2014JD022629

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

The first nitryl chloride (ClNO2) measurements in the UK were made during the summer 2012 ClearfLo campaign with a chemical ionization mass spectrometer, utilizing an I- ionization scheme. Concentrations of ClNO2 exceeded detectable limits (11ppt) every night with a maximum concentration of 724ppt. A diurnal profile of ClNO2 peaking between 4 and 5 A.M., decreasing directly after sunrise, was observed. Concentrations of ClNO2 above the detection limit are generally observed between 8 P.M. and 11 A.M. Different ratios of the production of ClNO2:N2O5 were observed throughout with both positive and negative correlations between the two species being reported. The photolysis of ClNO2 and a box model utilizing the Master Chemical Mechanism modified to include chlorine chemistry was used to calculate Cl atom concentrations. Simultaneous measurements of hydroxyl radicals (OH) using low pressure laser-induced fluorescence and ozone enabled the relative importance of the oxidation of three groups of measured VOCs (alkanes, alkenes, and alkynes) by OH radicals, Cl atoms, and O-3 to be compared. For the day with the maximum calculated Cl atom concentration, Cl atoms in the early morning were the dominant oxidant for alkanes and, over the entire day, contributed 15%, 3%, and 26% toward the oxidation of alkanes, alkenes, and alkynes, respectively.

引用

页码：5638 / 5657

页数：20

共 72 条

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