Episode 669: Dave Dorman, DVM, PhD - Rima Habre, ScD - Megan Harries, PhD - NASEM - Why Indoor Chemistry Matters
Posted: Fri Jul 08, 2022 6:59 pm
Show Resources:
Show Discussion:
12:05:44 From cliff zlotnik : Name the collection of unsaturated bicyclic monoterpenes as the majority liquid extract of conifers?
12:06:02 From cliff zlotnik : trivia question is above
12:07:09 From Jonathan Faith : https://nap.nationalacademies.org/resou ... lights.pdf
12:07:43 From Megan Harries : the full report can be found at the National Academies Press site: https://nap.nationalacademies.org/catal ... ry-matters
12:24:10 From Ed Light : What is your opinion of concentration limits currently in use to judge VOC levels in indoor air? These include guidelines for acceptable health risk, such as the California CRELS, and acceptable levels for classification as a LEED building. My review of these criteria found no supporting data based on actual health effects in exposed occupants at these levels (parts per billion). Also, these criteria overlap with the range of background concentrations typically found indoors.
12:26:05 From steven.corpuz : When we talk about cooking, are we talking about the cooking smoke or off gas from NPG or propane
12:31:07 From steven.corpuz : And the ability of the actual cook
12:33:02 From Danny Gough’s iPad : Perhaps my grandparents had an innovative idea with the kitchen in a separate building than the living space.
12:33:48 From cliff zlotnik : Danny, it worked then and would work now : )
12:38:17 From Ed Light : To clarify my previous question, I could not find any toxicological or epidemiological studies based on human exposure establishing thresholds of concern for VOCs at the levels specified by IAQ standards. Am I missing anything please follow up this program with citations supporting actual health effects at these low levels? Did NAS consider recommending that we stop making decisions based on these standards, which I consider arbitrary and misleading?
12:51:35 From steven.corpuz : Is this similar to Ozone cleaning for CPAP machines?
12:52:44 From Ed Light : It sounds like NAS may not have considered studies showing filters in use, including activated carbon, offgas VOCs back into the air.
12:53:12 From Danny Gough’s iPad : And yet there is substantial anecdotal evidence some of these devices do provide benefit. Is it possible the benefits are real, but the science just hasn’t identified those elements?
12:54:28 From Danny Gough’s iPad : It’s akin to the idea, if you can’t measure it, it doesn’t exist. But it’s just as probable we don’t know how to measure it.
12:54:57 From Megan Harries : here's the microbiomes report from 2017: https://nap.nationalacademies.org/catal ... for-indoor
12:59:39 From cliff zlotnik : correct Vic send your address
12:05:44 From cliff zlotnik : Name the collection of unsaturated bicyclic monoterpenes as the majority liquid extract of conifers?
12:06:02 From cliff zlotnik : trivia question is above
12:07:09 From Jonathan Faith : https://nap.nationalacademies.org/resou ... lights.pdf
12:07:43 From Megan Harries : the full report can be found at the National Academies Press site: https://nap.nationalacademies.org/catal ... ry-matters
12:24:10 From Ed Light : What is your opinion of concentration limits currently in use to judge VOC levels in indoor air? These include guidelines for acceptable health risk, such as the California CRELS, and acceptable levels for classification as a LEED building. My review of these criteria found no supporting data based on actual health effects in exposed occupants at these levels (parts per billion). Also, these criteria overlap with the range of background concentrations typically found indoors.
12:26:05 From steven.corpuz : When we talk about cooking, are we talking about the cooking smoke or off gas from NPG or propane
12:31:07 From steven.corpuz : And the ability of the actual cook
12:33:02 From Danny Gough’s iPad : Perhaps my grandparents had an innovative idea with the kitchen in a separate building than the living space.
12:33:48 From cliff zlotnik : Danny, it worked then and would work now : )
12:38:17 From Ed Light : To clarify my previous question, I could not find any toxicological or epidemiological studies based on human exposure establishing thresholds of concern for VOCs at the levels specified by IAQ standards. Am I missing anything please follow up this program with citations supporting actual health effects at these low levels? Did NAS consider recommending that we stop making decisions based on these standards, which I consider arbitrary and misleading?
12:51:35 From steven.corpuz : Is this similar to Ozone cleaning for CPAP machines?
12:52:44 From Ed Light : It sounds like NAS may not have considered studies showing filters in use, including activated carbon, offgas VOCs back into the air.
12:53:12 From Danny Gough’s iPad : And yet there is substantial anecdotal evidence some of these devices do provide benefit. Is it possible the benefits are real, but the science just hasn’t identified those elements?
12:54:28 From Danny Gough’s iPad : It’s akin to the idea, if you can’t measure it, it doesn’t exist. But it’s just as probable we don’t know how to measure it.
12:54:57 From Megan Harries : here's the microbiomes report from 2017: https://nap.nationalacademies.org/catal ... for-indoor
12:59:39 From cliff zlotnik : correct Vic send your address