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CATEGORIES:Colloquium/Seminar
DESCRIPTION:Indoor Air Quality in Western Canada During Wildfire Episodes\n
 Rebecca Mesburis\,\nCU ANYL 1st year\n\nThe increased frequency\, duration\
 , and intensity of wildfires has raised public awareness of the impact of w
 ildfire smoke on air quality and human health. The 2023 wildfire season in 
 Canada broke the record for the most area burned in North America’s history
  at about 18.5 million hectares. The main threat to public health from wild
 fire smoke is particulate matter\, with particulate matter that have a diam
 eter of 2.5 micrometers or less (PM2.5) contributing to most of the total p
 articulate mass and travelling significant distances from the source of the
  fire. Recently\, low-cost air quality sensors have been used in air qualit
 y studies due to their ability to capture high-resolution spatiotemporal da
 ta. We used the publicly available low- cost PurpleAir sensor network to ga
 ther indoor and outdoor PM2.5 data in Kamloops\, Canada from January to Dec
 ember 2021 with the goal to assess the level of exposure to wildfire PM2.5 
 relative to other sources of PM2.5. Given that we obtain most of our partic
 ulate inhalation exposure when indoors\, changes to the indoor environment 
 during wildfire episodes were emphasized. On wildfire-influenced days\, wil
 dfire PM2.5 dominated the indoor exposure sources and indoor PM2.5 was almo
 st always less than outdoor PM2.5. On non-wildfire- influenced days\, no ty
 pical relationship was established between indoor and outdoor PM2.5. The an
 alysis was limited by the number of PurpleAir sensors and knowledge of the 
 indoor environments studied. The findings indicate that remaining indoors d
 uring wildfire events is currently an effective but finite strategy to limi
 t PM2.5 exposure in Kamloops.\n\nand\n\nExploring Alcohol Adsorption to Gol
 d Induced by Applied Potential\nDrew Blauth\,\nCU ANYL 1st year\n\nSelf-ass
 embled monolayers (SAMs) play vital roles in battery development\, biosenso
 r function\, and drug delivery. Extensive research has been directed toward
 s adsorbate and substrate pairs that spontaneously form SAMs\, such as thio
 ls and gold\, leaving pairs that do not spontaneously form SAMs relatively 
 understudied. This project investigated alcohol adsorption to gold\, which 
 has been ignored by researchers due to oxygen - gold bond being relatively 
 weak. By applying potential to gold substrates immersed in alcohol solution
 s and observing alcohol adsorption to gold using Surface Enhanced Raman Spe
 ctroscopy (SERS)\, it was determined that alcohol adsorption to gold could 
 be induced and interrupted repeatedly by cycling between positive and negat
 ive applied voltages. While it is unclear exactly how the alcohols interact
  with the gold\, these results suggest that applied potential could be used
  to create alcohol and gold SAMs\, greatly broadening the applications SAMs
  could be used for.
DTEND:20231127T202000Z
DTSTAMP:20260416T012956Z
DTSTART:20231127T192000Z
GEO:40.007888;-105.270477
LOCATION:Ekeley Science\, 165
SEQUENCE:0
SUMMARY:CU ANYL Seminar\, Rebecca Mesburis\, and Drew Blauth\, CU ANYL 1st 
 years
UID:tag:localist.com\,2008:EventInstance_44880013922866
URL:https://calendar.colorado.edu/event/cu_anyl_seminar_rebecca_mesburis_an
 d_drew_blauth_cu_anyl_1st_years
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