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ORGANIZER;CN=Natalie Leung:MAILTO:[log in to unmask]
ATTENDEE;ROLE=REQ-PARTICIPANT;PARTSTAT=NEEDS-ACTION;RSVP=TRUE;CN="SOCAAR-l:
Southern Ontario Centre for Atmospheric Aerosol Research":MAILTO:SOCAAR-L@l
istserv.utoronto.ca
ATTACH:CID:[log in to unmask]
DESCRIPTION;LANGUAGE=en-US:Hi All\,\n\nSOCAAR is pleased to announce the ne
xt SOCAAR Seminar:\n\nWednesday\, February 4\, 2015\, 3 – 4 PM\n200 Coll
ege Street – WB407\n\n\nAtmospheric sources and sinks of amines\, amides
and isocyanic acid (HNCO)\n\nNadine Borduas\nPhD Candidate\nDepartment of
Chemistry\nUniversity of Toronto\n\n\nThere has been a growing interest i
n the use of amines as efficient solvents for carbon capture and storage (
CCS) technology to minimize CO2 emissions from large industrial processes.
Monoethanolamine (MEA) is the current benchmark solvent and so understand
ing its atmospheric fate is instrumental in implementing CCS. To address t
his gap\, we investigated the reaction of MEA with oxidants like OH radica
ls and ozone within a smog chamber experimental setup\, using online proto
n-transfer-reaction mass spectrometry. Since\, MEA has a lifetime of a few
hours in the atmosphere\, we focused on characterizing its gas-phase prod
ucts to further assess the fate of this amine. Formamide is the major oxid
ation product detected and we provide the first report of its rate coeffic
ient with OH radicals\, (4.44 ± 0.46) ´ 10-12 cm3 molec-1 s-1 at room te
mperature and atmospheric pressure\, translating to a lifetime of ~ 1 day.
Other alkylated amides were studied to gain a better understanding of th
eir reactivity trends. A detailed mechanistic study of these amides involv
ing ab initio calculations identified production of isocyanates\, includin
g isocyanic acid (HNCO) and methyl isocyanate\, two toxic substances\, as
a major pathway. Current work is now focused on studying the sources and s
inks of isocyanic acid. In particular\, recent experiments on the formati
on of HNCO from cigarette smoke as well as from nicotine oxidation will be
presented.\n\n\n\nIf you are unable to join us for the seminar in person\
, we will be broadcasting the presentations live during the seminar using
GoToMeeting software. Please feel free to join us online using a web-brows
er or by calling in and using the webviewing software. If you do decide to
join us\, please remember to mute your microphone. If you have any quest
ions during the meeting you are welcome to contact me by email\, or by usi
ng the GoToMeeting chat.\n\n\nInstructions on how to connect:\n\nUsing you
r web-browser or smartphone\nhttps://global.gotomeeting.com/join/136012909
\nBy telephone.\n\nDial +1 (647) 497-9351\nAccess Code: 136-012-909\nAudio
PIN: Shown after joining the meeting\n\nMeeting ID: 136-012-909\n\n
SUMMARY;LANGUAGE=en-US:SOCAAR Seminar- Nadine Borduas
DTSTART;TZID=Eastern Standard Time:20150204T150000
DTEND;TZID=Eastern Standard Time:20150204T160000
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01000000074D62A04582E7E40A88156C0D4D7D5FF
CLASS:PUBLIC
PRIORITY:5
DTSTAMP:20150120T154052Z
TRANSP:OPAQUE
STATUS:CONFIRMED
SEQUENCE:0
LOCATION;LANGUAGE=en-US:WB407 - 200 College Street
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