tag:blogger.com,1999:blog-4705097374441454471.post5673279321207756984..comments2024-03-28T08:51:15.561-04:00Comments on Human Health Risk Assessment to Chemicals: A Simple Exposure Modeling Example as a way of Getting StartedMike Jayjockhttp://www.blogger.com/profile/02521885327730438390noreply@blogger.comBlogger10125tag:blogger.com,1999:blog-4705097374441454471.post-78549009653376616272013-09-09T11:22:11.082-04:002013-09-09T11:22:11.082-04:00I would like to see more on vapor generation rates...I would like to see more on vapor generation rates. Calculating this from a chemical's vapor pressure, liquid:vapor equilibrium and evaporation rate can be complicated for chemical (solvent) mixtures. Is there an easier way? Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-4705097374441454471.post-5167059564265957422013-08-05T13:25:06.103-04:002013-08-05T13:25:06.103-04:00It's Maryellen.johns@grace.com
Thanks!It's Maryellen.johns@grace.com<br /><br />Thanks!<br />Maryellen Johnsnoreply@blogger.comtag:blogger.com,1999:blog-4705097374441454471.post-50654224195736848512013-07-15T10:00:24.499-04:002013-07-15T10:00:24.499-04:00Maryellen, please send me your email address and I...Maryellen, please send me your email address and I will send you a paper we did on this subject.Mike Jayjockhttps://www.blogger.com/profile/02521885327730438390noreply@blogger.comtag:blogger.com,1999:blog-4705097374441454471.post-22090751324285546562013-07-13T07:27:16.807-04:002013-07-13T07:27:16.807-04:00I think it's very helpful. I have downloaded ...I think it's very helpful. I have downloaded IH Mod but haven't had time to use it yet. I would like to use to help my facilities estimate concentrations from small spills and help confirm appropriate respiratory protection. Would you be able to work through some examples?Maryellen Johnsnoreply@blogger.comtag:blogger.com,1999:blog-4705097374441454471.post-89789891289120530922013-07-08T11:44:24.280-04:002013-07-08T11:44:24.280-04:00A topic I would love to see is an answer to the qu...A topic I would love to see is an answer to the question "How many samples do I need to collect or when can I stop sampling?" I have over the years taught courses in sampling and exposure reconstruction and have repeatedly encountered this question. My response has been and will continute to be "What is the question you want to answer." It appears to be a difficult concept, that is, you must first develop the question and then the approach to answer that question. A discussion of this issue would be helpful. ThanksAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-4705097374441454471.post-34495682016121059252013-07-03T10:05:15.773-04:002013-07-03T10:05:15.773-04:00Thank you for starting this blog. I agree that the...Thank you for starting this blog. I agree that there is a great use for exposure modeling. One of my biggest frustrations as a hygienists is when a customer insists that they need monitoring carried out, and all facts point to insufficient material being used, or being used for such short periods that there is no way exposure standards will be exceeded or even close. Modelling is a great tool to demonstrate this.<br /><br />In the case of clean rooms or semi-enclosed stores where the ventilation rates are well known I have no difficulty in using exposure modeling as a tool. My biggest problem is where the ventilation rates are unknown and an estimate of the likely ventilation is required. ie the value of Q in the method described.<br /><br />I would welcome any advice or guidance on this matter. Also interested to see what my fellow hygienists views are generally on exposure modeling as I think it is a valuable tool in the hygienists arsenal and can avoid the time wasted carrying our sampling,paying and waiting for analytical results in order to produce a report where the conclusions are already known with a great deal of confidence even before the job starts. <br /><br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-4705097374441454471.post-38167090593189756412013-07-03T09:20:34.790-04:002013-07-03T09:20:34.790-04:00Same as Chris for me. Thanks for this blog.Same as Chris for me. Thanks for this blog.B. Gaulkehttps://www.blogger.com/profile/06120686826514193663noreply@blogger.comtag:blogger.com,1999:blog-4705097374441454471.post-48989966101115705102013-07-03T08:58:35.293-04:002013-07-03T08:58:35.293-04:00Mike,
Great information and a good read! I would ...Mike,<br /><br />Great information and a good read! I would love to see more information on all bullet points.<br /><br />Appreciate the post,<br /><br />GrantAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-4705097374441454471.post-73969768965510226772013-07-03T08:39:44.784-04:002013-07-03T08:39:44.784-04:00Mike,
Very interesting. Please continue with thi...Mike,<br /><br />Very interesting. Please continue with this subject. All bullet points please.<br /><br />Cheers, ChrisChris Aebinoreply@blogger.comtag:blogger.com,1999:blog-4705097374441454471.post-50408524462324294712013-07-02T21:57:32.721-04:002013-07-02T21:57:32.721-04:00Hi Mike,
I love your blog. Loved the article abou...Hi Mike,<br /><br />I love your blog. Loved the article about every IH that should be a modeler and I love this one even more. It keeps reminding me that modeling is not complicated and so usefull. One tends to quickly give up to profesionnal judgement for an easy way out. Since you asked, I'd like to hear you about topics no 1 and no 4..even thought I was tempted to say 'all of the above'!<br /><br />- Some of the math background that you may want to brush up on to help you with modeling (Note: It’s not a lot)<br /><br />- Well mixed models versus models that consider air concentrations close to the source<br /><br />Thank you for your posts and your time.<br />Unknownhttps://www.blogger.com/profile/13243543891691804839noreply@blogger.com