<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=Windows-1252">
<meta content="text/html; charset=utf-8">
</head>
<body bgcolor="#FFFFFF">
<div style="width:100%; font-size:initial; font-family:Calibri,'Slate Pro',sans-serif,sans-serif; color:rgb(31,73,125); text-align:initial; background-color:rgb(255,255,255)">
That is a mass fraction. </div>
<div style="width:100%; font-size:initial; font-family:Calibri,'Slate Pro',sans-serif,sans-serif; color:rgb(31,73,125); text-align:initial; background-color:rgb(255,255,255)">
<br>
</div>
<div style="width:100%; font-size:initial; font-family:Calibri,'Slate Pro',sans-serif,sans-serif; color:rgb(31,73,125); text-align:initial; background-color:rgb(255,255,255)">
For interest, below 0.1 microns the particles have so little mass they are reported by 'counts'. If you have a Grimm particle counter it reports the counts per 'size bin'. This allows the application of a density per bin because the large particles are mostly
'sand' and the small ones are much less dense. </div>
<div style="width:100%; font-size:initial; font-family:Calibri,'Slate Pro',sans-serif,sans-serif; color:rgb(31,73,125); text-align:initial; background-color:rgb(255,255,255)">
<br>
</div>
<div style="width:100%; font-size:initial; font-family:Calibri,'Slate Pro',sans-serif,sans-serif; color:rgb(31,73,125); text-align:initial; background-color:rgb(255,255,255)">
If you want to make a simple correction, use 1.0 as the density of PM 1 and 2.5 and 2.7 for those between PM2.5 and 10.</div>
<div style="width:100%; font-size:initial; font-family:Calibri,'Slate Pro',sans-serif,sans-serif; color:rgb(31,73,125); text-align:initial; background-color:rgb(255,255,255)">
<br>
</div>
<div style="width:100%; font-size:initial; font-family:Calibri,'Slate Pro',sans-serif,sans-serif; color:rgb(31,73,125); text-align:initial; background-color:rgb(255,255,255)">
Be careful when presented with numbers to ask if the PM2.5 is included in the PM10 number. There are now two methods of reporting.
</div>
<div style="width:100%; font-size:initial; font-family:Calibri,'Slate Pro',sans-serif,sans-serif; color:rgb(31,73,125); text-align:initial; background-color:rgb(255,255,255)">
<br>
</div>
<div style="width:100%; font-size:initial; font-family:Calibri,'Slate Pro',sans-serif,sans-serif; color:rgb(31,73,125); text-align:initial; background-color:rgb(255,255,255)">
Regards </div>
<div style="width:100%; font-size:initial; font-family:Calibri,'Slate Pro',sans-serif,sans-serif; color:rgb(31,73,125); text-align:initial; background-color:rgb(255,255,255)">
Crispin </div>
<br>
<div><i>Interesting result.<br>
</i><br>
Curious. Is the 90% figure based on particle count or weight, or something else?<br>
<pre class="moz-signature" cols="72">Doc / Dr TLUD / Prof. Paul S. Anderson, PhD
Email: <a class="moz-txt-link-abbreviated" href="mailto:psanders@ilstu.edu">psanders@ilstu.edu</a>
Skype: paultlud Phone: +1-309-452-7072
Website: <a class="moz-txt-link-abbreviated" href="https://eur02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.drtlud.com&data=02%7C01%7C%7C144bed1fbc054700b7c308d5b5ac9f4b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636614675362513397&sdata=wHcEQg6oDYI%2FnmV8m2Pg7mVjSyHlr6CW%2FACT1dhmxWg%3D&reserved=0" originalsrc="http://www.drtlud.com" shash="vKxZPqTlh1Qybz9OHkrIPcsxiHwoT8yo0Rjl/A6on5EhvOnuoD9zjvE7mC99ifgQfUVVdoKYBTjsTuromclc/ftvLATqg5ZLS8NzSlVOO3JJhPGswRIZLp3RZIrtT+jMZz7/8fe/CMCCV0d5h6OXhnSgo5Bb1ILrytNzmRbAAQw=">www.drtlud.com</a></pre>
<div class="moz-cite-prefix">On 5/9/2018 7:36 AM, Norbert Senf wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Here's an interesting study, published today:<font size="2"><span style="font-weight:normal"><br>
<br>
"C</span><span style="font-weight:normal">oarse particulate matter (PM2.5–10) in Los Angeles Basin air induces expression of inflammation and cancer biomarkers in rat brains."<br>
</span></font>
<div><font size="2"><span style="font-weight:normal"><a href="https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.nature.com%2Farticles%2Fs41598-018-23885-3&data=02%7C01%7C%7C144bed1fbc054700b7c308d5b5ac9f4b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636614675362513397&sdata=ej%2BoGqjjycY4q60UBgDpa3mbKL%2BYGKDx81nHdrjXtyA%3D&reserved=0" originalsrc="https://www.nature.com/articles/s41598-018-23885-3" shash="BeiZN/7/bO8kgcfyJidccqn2Uft2vKykGvNUV/1TU1/MN9b6F9xNXYn9nm/WuXWXcWanaH2osevJDquawZIKVz5/9V3eduDunH514QukbS7boJJzLVCQdgSL9NetL9Rj78kqOBjHHlbzvsRhdKGbF9HB+RQUXj2405v2/HRu5/U=">https://www.nature.com/articles/s41598-018-23885-3</a><br>
</span></font></div>
<div><br>
</div>
<div><font size="2">What is interesting is that, even with long term exposure, they only found the specific biomarkers in PM2.5-10 (coarse PM), but not in ultrafine PM (<0.15 um) or fine PM (<2.5 um).<br>
</font></div>
<div><font size="2">90% of wood smoke PM is smaller than 1 um. <br>
</font></div>
<div><font size="2"><br>
</font></div>
<div><font size="2">Norbert</font><br>
</div>
<div><font size="2"><span style="font-weight:normal"></span></font></div>
<div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Mon, May 7, 2018 at 3:19 PM, Norbert Senf <span dir="ltr">
<<a href="mailto:norbert.senf@gmail.com" target="_blank">norbert.senf@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex; border-left:1px solid
rgb(204,204,204); padding-left:1ex">
<div dir="ltr">(snip)<br>
<div>
<div class="gmail_extra">
<div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex; border-left:1px solid
rgb(204,204,204); padding-left:1ex">
<div>------------------------------<br>
Crispin Pemberton-Pigott <<a href="mailto:crispinpigott@outlook.com" target="_blank">crispinpigott@outlook.com</a>> wrote:<br>
(snip)<span class="gmail-"><br>
The cleaner the air in North America, the more common asthma there is. Is cleaner air contributing to the shortening of lives in North America? On the face of it, possibly.<br>
</span></div>
(snip)<br clear="all">
</blockquote>
<div><br>
</div>
<div>"Yukon's clean air could be why fewer youth are hospitalized with asthma"<br>
<a href="https://eur02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.cbc.ca%2Fnews%2Fcanada%2Fnorth%2Fyukon-asthma-hospitalization-cihi-clean-air-1.4639852&data=02%7C01%7C%7C144bed1fbc054700b7c308d5b5ac9f4b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636614675362513397&sdata=geOMAZPnsOJt8mpm2O3EfeF0UnZvhiydHylyxBEyp9s%3D&reserved=0" originalsrc="http://www.cbc.ca/news/canada/north/yukon-asthma-hospitalization-cihi-clean-air-1.4639852" shash="i0gWRaZjImmdEwZ/BpTLNTby1pvB6KZEZfdGTkKYZWrc+gJXFLXS/k5PGvrdbL0r0l5wPiOtafGBwWp4Ng0Q/xVpwgC7SFywVOwcoAfxNuUldVgaJAOUwjNxw0OgwekD9UHpwPmAK4v2AkPHm3X1YTVh0c0plKvgc0vp4wYoECc=" target="_blank">http://www.cbc.ca/news/canada/<wbr>north/yukon-asthma-<wbr>hospitalization-cihi-clean-<wbr>air-1.4639852</a></div>
<div><br>
</div>
<div><span>
<p><span>"...The report also shows that asthma hospitalization rates tend to be higher in urban areas in Canada, compared to rural and remote areas.
</span></p>
<p><span>"Our air is pretty pristine, and air pollution is shown to be a factor associated with asthma exacerbation," said Brendan Hanley, Yukon's Chief Medical Officer of Health.
</span></p>
<p><span>In places such as Nova Scotia and Ontario, asthma hospitalization rates are much higher in urban centres compared to rural, the report said. A similar comparison wasn't included for Yukon because of a lack of data.
</span></p>
(snip)
<p><span>But Hanley said Yukon's air quality is not perfect. He says air pollution tends to spike in residential areas due to wood-burning, but those tend to be short-term exposures.
</span></p>
<p><span>Other possible reason for Yukon's low rate could be attributed to good access to primary care for children with asthma and good rates of controls in terms of medication, according to Hanley."
</span></p>
</span><span class="gmail-HOEnZb"><font color="#888888"><br>
</font></span></div>
</div>
<span class="gmail-HOEnZb"><font color="#888888">-- <br>
<div class="gmail-m_-5555641857791561894gmail_signature">Norbert Senf<br>
Masonry Stove Builders<br>
25 Brouse Road, RR 5<br>
Shawville Québec J0X 2Y0<br>
819.647.5092<br>
<a href="https://eur02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.heatkit.com&data=02%7C01%7C%7C144bed1fbc054700b7c308d5b5ac9f4b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636614675362513397&sdata=lL9No2Je3YqN1bV3Vc63J935seyMdw3XcmgxfDnuoZA%3D&reserved=0" originalsrc="http://www.heatkit.com" shash="t6B4Nar1xJj/oFXFucNZpwhKt2hXeD/SbpjoH0INjyaApMZgsxPXGwQBsit1nvPFqBbNnWjtvy5CEwGNZ0alBdlpUrQfiw1lxy2Pd3Z0cJTRm1vRiTeV+5aC9A3PXzM+v4alQGRq5Z8HewB9ETkWlDFms3Ji1WepytiU850x0bQ=" target="_blank">www.heatkit.com</a></div>
</font></span></div>
</div>
</div>
</blockquote>
</div>
<br>
<br clear="all">
<br>
-- <br>
<div class="gmail_signature">Norbert Senf<br>
Masonry Stove Builders<br>
25 Brouse Road, RR 5<br>
Shawville Québec J0X 2Y0<br>
819.647.5092<br>
<a href="https://eur02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.heatkit.com&data=02%7C01%7C%7C144bed1fbc054700b7c308d5b5ac9f4b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636614675362513397&sdata=lL9No2Je3YqN1bV3Vc63J935seyMdw3XcmgxfDnuoZA%3D&reserved=0" originalsrc="http://www.heatkit.com" shash="t6B4Nar1xJj/oFXFucNZpwhKt2hXeD/SbpjoH0INjyaApMZgsxPXGwQBsit1nvPFqBbNnWjtvy5CEwGNZ0alBdlpUrQfiw1lxy2Pd3Z0cJTRm1vRiTeV+5aC9A3PXzM+v4alQGRq5Z8HewB9ETkWlDFms3Ji1WepytiU850x0bQ=" target="_blank">www.heatkit.com</a></div>
</div>
</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset> <br>
<pre>_______________________________________________
Stoves mailing list
to Send a Message to the list, use the email address
<a class="moz-txt-link-abbreviated" href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a>
to UNSUBSCRIBE or Change your List Settings use the web page
<a class="moz-txt-link-freetext" href="https://eur02.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.bioenergylists.org%2Fmailman%2Flistinfo%2Fstoves_lists.bioenergylists.org&data=02%7C01%7C%7C144bed1fbc054700b7c308d5b5ac9f4b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636614675362513397&sdata=6J%2BIHwQ05JkVdjOrd0hBaez44iIApGALB3Fjkg9xggk%3D&reserved=0" originalsrc="http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org" shash="HPWace5zDLGvez7qT2yCdypXBIYulXgkWQ/eH1lBUKpYEGiaG3yLHRO7tfIyc+0d0r6a9oddG3CRXPv/b7OLWyYxa2PPuWQxTcuvsS4dlYxn15ayXoIxURVML25BsiKrcT8x70xKF11xA+/5hUZDLa0++4SvrvEk/D0SWsRuCrM=">http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org</a>
for more Biomass Cooking Stoves, News and Information see our web site:
<a class="moz-txt-link-freetext" href="https://eur02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fstoves.bioenergylists.org%2F&data=02%7C01%7C%7C144bed1fbc054700b7c308d5b5ac9f4b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636614675362513397&sdata=gHey2Hfp9tZAsBGcjCjF0jWUrW%2FAXRN0WSlVBxS700Q%3D&reserved=0" originalsrc="http://stoves.bioenergylists.org/" shash="z+looeKywZ+kibUxVCxPM1iUZixmB3Go8035w0Q+lLti55cEncD7etMumJS9NUE/y8SS/5XVCyExFMY5sf9iq2nzux4K8SlNgUa1UM/+4h4i8xt6fZq0sYMkpym4RUfeF8wumnl+cSvubJlQENo0a1m2oZOsULHw13D9YKWio2c=">http://stoves.bioenergylists.org/</a>
</pre>
</blockquote>
<br>
</div>
</body>
</html>