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Measurement of iodine species and sulfuric acid using bromide chemical ionization mass spectrometers

Iodine species are important in the marine atmosphere for oxidation and new-particle formation. Understanding iodine chemistry and iodine new-particle formation requires high time resolution, high sensitivity, and simultaneous measurements of many iodine species. Here, we describe the application of...

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Autores principales: Wang, Mingyi, He, Xu-Cheng, Finkenzeller, Henning, Iyer, Siddharth, Chen, Dexian, Shen, Jiali, Simon, Mario, Hofbauer, Victoria, Kirkby, Jasper, Curtius, Joachim, Maier, Norbert, Kurtén, Theo, Worsnop, Douglas R, Kulmala, Markku, Rissanen, Matti, Volkamer, Rainer, Tham, Yee Jun, Donahue, Neil M, Sipilä, Mikko
Lenguaje:eng
Publicado: 2021
Materias:
Acceso en línea:https://dx.doi.org/10.5194/amt-14-4187-2021
http://cds.cern.ch/record/2808731
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author Wang, Mingyi
He, Xu-Cheng
Finkenzeller, Henning
Iyer, Siddharth
Chen, Dexian
Shen, Jiali
Simon, Mario
Hofbauer, Victoria
Kirkby, Jasper
Curtius, Joachim
Maier, Norbert
Kurtén, Theo
Worsnop, Douglas R
Kulmala, Markku
Rissanen, Matti
Volkamer, Rainer
Tham, Yee Jun
Donahue, Neil M
Sipilä, Mikko
author_facet Wang, Mingyi
He, Xu-Cheng
Finkenzeller, Henning
Iyer, Siddharth
Chen, Dexian
Shen, Jiali
Simon, Mario
Hofbauer, Victoria
Kirkby, Jasper
Curtius, Joachim
Maier, Norbert
Kurtén, Theo
Worsnop, Douglas R
Kulmala, Markku
Rissanen, Matti
Volkamer, Rainer
Tham, Yee Jun
Donahue, Neil M
Sipilä, Mikko
author_sort Wang, Mingyi
collection CERN
description Iodine species are important in the marine atmosphere for oxidation and new-particle formation. Understanding iodine chemistry and iodine new-particle formation requires high time resolution, high sensitivity, and simultaneous measurements of many iodine species. Here, we describe the application of a bromide chemical ionization mass spectrometer (Br-CIMS) to this task. During the iodine oxidation experiments in the Cosmics Leaving OUtdoor Droplets (CLOUD) chamber, we have measured gas-phase iodine species and sulfuric acid using two BrCIMS, one coupled to a Multi-scheme chemical IONization inlet (Br-MION-CIMS) and the other to a Filter Inlet for Gasses and AEROsols inlet (Br-FIGAERO-CIMS). From offline calibrations and intercomparisons with other instruments, we have quantified the sensitivities of the Br-MIONCIMS to HOI, I2, and H2SO4 and obtained detection limits of 5.8 × 106 , 3.8 × 105 , and 2.0 × 105 molec. cm−3 , respectively, for a 2 min integration time. From binding energy calculations, we estimate the detection limit for HIO3 to be 1.2 × 105 molec. cm−3 , based on an assumption of maximum sensitivity. Detection limits in the Br-FIGAERO-CIMS are around 1 order of magnitude higher than those in the BrMION-CIMS; for example, the detection limits for HOI and HIO3 are 3.3 × 107 and 5.1 × 106 molec. cm−3 , respectively. Our comparisons of the performance of the MION inlet and the FIGAERO inlet show that bromide chemical ionization mass spectrometers using either atmospheric pressure or reduced pressure interfaces are well-matched to measuring iodine species and sulfuric acid in marine environments.
id cern-2808731
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2021
record_format invenio
spelling cern-28087312022-11-01T21:13:30Zdoi:10.5194/amt-14-4187-2021http://cds.cern.ch/record/2808731engWang, MingyiHe, Xu-ChengFinkenzeller, HenningIyer, SiddharthChen, DexianShen, JialiSimon, MarioHofbauer, VictoriaKirkby, JasperCurtius, JoachimMaier, NorbertKurtén, TheoWorsnop, Douglas RKulmala, MarkkuRissanen, MattiVolkamer, RainerTham, Yee JunDonahue, Neil MSipilä, MikkoMeasurement of iodine species and sulfuric acid using bromide chemical ionization mass spectrometersAstrophysics and AstronomyIodine species are important in the marine atmosphere for oxidation and new-particle formation. Understanding iodine chemistry and iodine new-particle formation requires high time resolution, high sensitivity, and simultaneous measurements of many iodine species. Here, we describe the application of a bromide chemical ionization mass spectrometer (Br-CIMS) to this task. During the iodine oxidation experiments in the Cosmics Leaving OUtdoor Droplets (CLOUD) chamber, we have measured gas-phase iodine species and sulfuric acid using two BrCIMS, one coupled to a Multi-scheme chemical IONization inlet (Br-MION-CIMS) and the other to a Filter Inlet for Gasses and AEROsols inlet (Br-FIGAERO-CIMS). From offline calibrations and intercomparisons with other instruments, we have quantified the sensitivities of the Br-MIONCIMS to HOI, I2, and H2SO4 and obtained detection limits of 5.8 × 106 , 3.8 × 105 , and 2.0 × 105 molec. cm−3 , respectively, for a 2 min integration time. From binding energy calculations, we estimate the detection limit for HIO3 to be 1.2 × 105 molec. cm−3 , based on an assumption of maximum sensitivity. Detection limits in the Br-FIGAERO-CIMS are around 1 order of magnitude higher than those in the BrMION-CIMS; for example, the detection limits for HOI and HIO3 are 3.3 × 107 and 5.1 × 106 molec. cm−3 , respectively. Our comparisons of the performance of the MION inlet and the FIGAERO inlet show that bromide chemical ionization mass spectrometers using either atmospheric pressure or reduced pressure interfaces are well-matched to measuring iodine species and sulfuric acid in marine environments.oai:cds.cern.ch:28087312021
spellingShingle Astrophysics and Astronomy
Wang, Mingyi
He, Xu-Cheng
Finkenzeller, Henning
Iyer, Siddharth
Chen, Dexian
Shen, Jiali
Simon, Mario
Hofbauer, Victoria
Kirkby, Jasper
Curtius, Joachim
Maier, Norbert
Kurtén, Theo
Worsnop, Douglas R
Kulmala, Markku
Rissanen, Matti
Volkamer, Rainer
Tham, Yee Jun
Donahue, Neil M
Sipilä, Mikko
Measurement of iodine species and sulfuric acid using bromide chemical ionization mass spectrometers
title Measurement of iodine species and sulfuric acid using bromide chemical ionization mass spectrometers
title_full Measurement of iodine species and sulfuric acid using bromide chemical ionization mass spectrometers
title_fullStr Measurement of iodine species and sulfuric acid using bromide chemical ionization mass spectrometers
title_full_unstemmed Measurement of iodine species and sulfuric acid using bromide chemical ionization mass spectrometers
title_short Measurement of iodine species and sulfuric acid using bromide chemical ionization mass spectrometers
title_sort measurement of iodine species and sulfuric acid using bromide chemical ionization mass spectrometers
topic Astrophysics and Astronomy
url https://dx.doi.org/10.5194/amt-14-4187-2021
http://cds.cern.ch/record/2808731
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