Channel 1 Networks
Aaron is the webmaster of Channel 1 Networks and video editor/camera man for most all produced media content.
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NEWLY DETECTED CHEMICAL IN SMOKE MAY HAVE SERIOUS HEALTH IMPLICATIONS, SAYS NEW STUDY
May 16th
Cigarette smoking, burning forests and even cooking fires all release a chemical compound not previously known to exist in significant quantities in smoke and which may have potential human health impacts, says a new study involving the National Oceanic and Atmospheric Administration and the University of Colorado Boulder.
The study was conducted by scientists at the Cooperative Institute for Research in Environmental Sciences, or CIRES — a joint institute of CU-Boulder and NOAA — along with researchers from NOAA’s Earth System Research Laboratory.
The molecule, isocyanic acid, is similar to methyl isocyanate, the gas that leaked from a pesticide plant in Bhopal, India, in 1984 killing more than 3,000 people within weeks. “The molecule has hardly been measured before — certainly not in the atmosphere,” said CIRES Fellow Joost de Gouw, coauthor of the new paper published May 16 in the Proceedings of the National Academy of Sciences. “So it was a complete surprise to find it in such large quantities.”
De Gouw and his colleagues were first able to detect isocyanic acid when they developed and tested a new instrument, a mass spectrometer designed to measure gaseous acids in the air. In the laboratory, they found biomass burning — the burning of trees or plant material — produced levels of the molecule approaching 600 parts per billion by volume, or ppbv.
“There is this molecule in smoke that we can now measure and it is there in significant quantities,” de Gouw said. “There are good reasons to believe that it can have significant health impacts.”
In the human body, isocyanic acid dissolves to form charged cyanate molecules, and the researchers found that the acid was very soluble at the pH level of human blood. This means it could potentially enter the bloodstream, said de Gouw. When the exposure levels of isocyanic acid are greater than 1 ppbv, the charged cyanate molecules are expected to be present at levels that can contribute to a variety of human health problems like cardiovascular disease, cataracts and rheumatoid arthritis.
Once the researchers discovered that fires produced the gas at the U.S. Forest Service Fire Sciences Laboratory in Missoula, Mont., they then took their instruments out of the lab to see whether smoke in a “real” environment also gave off this chemical. “We had a new tool to look around us and we just explored,” de Gouw said. “It was basically our chemical curiosity at work.”
Previous studies have shown that burning coal produces isocyanic acid, and the CIRES researchers have discovered the chemical also is present in tobacco smoke and smoke from the combustion of other plant materials. In rural areas of developing countries where biofuels are used for cooking and heating, exposure levels of the acid could be harmful, according to the research team.
But does a real fire, as opposed to a lab fire, give off the acid? The team didn’t have to wait long to find out. Starting on Labor Day 2010, the Fourmile Canyon wildfire raged in the foothills above Boulder, Colo., burning more than 6,000 acres and destroying 169 homes. Scientists at the NOAA Earth System Research Laboratory in Boulder wasted no time in learning what they could about the event.
The team’s spectrometer detected levels of the acid up to 200 pptv in the air at the site, which was downwind from the fire. “Boulder has a world-class atmospheric chemistry building and only once in its lifetime is it going to have a full-on hit from a wildfire,” de Gouw said. “So just about everyone in that building turned on their instruments.”
One possibility was that the acid would only be prevalent in the immediate vicinity of a fire, de Gouw said. “But that didn’t happen,” he said. “We were miles away and it was still there.”
The researchers didn’t constrain their measurements to wildfires. They also used their equipment to find the levels of isocyanic acid in the urban environment of Los Angeles. “In LA we find even when there are no fires there is a little of this acid,” de Gouw said. “So smoke may not be the only source of it in the atmosphere.”
Since more isocyanic acid was measured in the atmosphere during the day, sunlight could be sparking the chemical reactions that make it, de Gouw said. Another potential source in urban air could be emissions from diesel engines outfitted with the latest generation of pollution control equipment that is now being introduced in California and Europe, he said.
“We know so little about isocyanic acid’s behavior in the atmosphere that we want to do a number of follow-up studies, “ de Gouw said. “We have some data in our paper but that is just the beginning and we need to do a lot more work.”
Other authors on the PNAS paper included Jim Roberts, Patrick Veres, Anthony Cochran, Carsten Warneke, Ian Burling, Robert Yokelson, Brian Lerner, Jessica Gilman, William Kuster and Ray Fall.
Volunteers sought to help end poverty in Boulder County
May 16th
Circles Allies training to be held Thursday
Boulder County, Colo. – As part of its continued effort to help move individuals and families out of poverty and into a life of sustained self-sufficiency, Boulder County is recruiting volunteers to participate in the Circles Campaign.
Circles is a national campaign designed to help families out of poverty and initiate changes in the community that result in eliminating barriers to economic stability. The long-range vision is to eliminate the condition of poverty altogether.
At the heart of the campaign are Circles Allies, middle- and upper-income volunteers that help families transitioning from poverty to self-sufficiency. The Allies provide friendship, coaching, networking and other non-financial support necessary to help families achieve their goals.
Boulder County Circles Campaign Coordinator Eliberto Mendoza will facilitate a Circles Allies 101 Training on May 19 in Boulder. The training explains the core concepts of the Circles Campaign and some of the situations volunteers might encounter as an ally.
Circles Allies are asked to make an 18-month commitment, volunteering for 6-12 hours per month including two monthly meetings. Please contact Eliberto Mendoza at emendoza@bouldercounty.org or 303-441-1503 for more information.
What: Volunteer training for the Circles Campaign, a nationwide program dedicated to ending poverty that has been implemented in Boulder County. Civic groups, faith communities, neighborhood groups, and individuals are all encouraged to get involved.
When: Thursday, May 19, 6-8 p.m.
Where: YWCA, 2222 14th St., Boulder
RSVP: Eliberto Mendoza, emendoza@bouldercounty.org or 303-441-1503
22 Boom – Start of Summer – Episode 36
May 16th
In Episode 36 the Start of Summer show we hit the outdoors, first Aaron goes to the Larimer Arts La Piazza Del Arte Chalk Art Festival in Denver to look at the wonderful street art, the Boulder Creek Festival is here and we visit the Duck table at the Farmer’s Market to learn about the popular duck race at the Boulder Creek Fest and the Summer Science classes for Kids booth, Then Jann Scott goes back to the Colorado National Speedway and talks with Ronnie Holt winner of the Late Model Race in April and Jann talks with the drivers about the race afterwards. Dan Culberson reviews the movie Water for Elephants, then music by The Samples and their song When It’s Raining. We go to the Capitol Hill Denver Peoples Fair, the Good Guys Car Show; we look at running at the Bolder Boulder and then visit the Boulder Jewish Festival.
Videos in this Episode
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22 Boom Intro -
Larimer Arts La Piazza Del Arte Chalk Art Festival -
Boulder Creek Events Ad -
Creekfest Duck Table at Farmers Market -
Boulder Channel 1 Social Media -
Science Outreach Program -
Colorado National Speedway Late Model Feature -
Hotshots Movie Review – Water for Elephants -
Boulder Channel 1 Social Media -
The Samples – When It’s raining -
Capitol Hill People’s Fair – 2006 -
Boulder Channel 1 Social Media -
Good Guys Car Show – Larimer County 2009 -
Bolder Boulder 2010 -
Boulder Jewish Festival -
Boulder Channel 1 Social Media -
Outro