This is a message from the Museumpests List. To post to this list send it as an email to [email protected] To unsubscribe please look at the footer of this email. ----------------------------------------------------------- Hi all,
It would not be typical for mg/kg to be equal to ppm, since the first is weight per weight, and the second is a count of one type of particle per total particles. The second (ppm) relies on the molecular weight of the gas and barometric pressure, since lighter particles under lower pressure disperse more readily resulting in fewer parts per million. With the name of the gaseous product you can likely look up the molecular weight; barometric pressure is often standardized at the normal atmospheric pressure at sea level which is 1013 hPa (which equals 1013 mbar, 760 mm Hg, or 1 atmosphere). The latter bit of info comes from http://iaq.dk/index.html#index, Conversion Calculator for pollutants. Do let us know what you figure out! all best, Ellen Pearlstein From: [email protected] To: [email protected] Subject: RE: [pestlist] Math headache Date: Fri, 29 Mar 2013 22:36:58 +0000 This is a message from the Museumpests List. To post to this list send it as an email to [email protected] To unsubscribe please look at the footer of this email. ----------------------------------------------------------- The risk of introduction is primarily ingestion, but it could be introduced dermally at a much lower level. From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Friday, March 29, 2013 6:33 PM To: [email protected] Subject: Re: [pestlist] Math headache This is a message from the Museumpests List. To post to this list send it as an email to [email protected] To unsubscribe please look at the footer of this email. ----------------------------------------------------------- Ryan - What is the product, a gas being inhaled or something being swallowed?? Tom -----Original Message----- From: Jones, Robert (Ryan) (Ryan) <[email protected]> To: pestlist <[email protected]> Sent: Fri, Mar 29, 2013 5:11 pm Subject: [pestlist] Math headache This is a message from the Museumpests List. To post to this list send it as an email to [email protected] To unsubscribe please look at the footer of this email. ----------------------------------------------------------- Group, I am trying to determine the safe/unsafe exposure levels for a particular product and am not sure my calculations are correct. Here it is: The estimate for acceptable daily intake for this product (I know…this is an arbitrary figure to begin with) is .0002 mg/kg. A 180 lb. human weighs 81.64 kg. This makes the acceptable daily intake for that person .016328 mg. Can this number be converted/translated into ppm? There are some that claim the answer would be .016328 ppm, and others say it is an impossible equation because the only way this can be converted is with mg/liters. Any thoughts? I just need a ballpark figure. Thanks! Ryan Jones Integrated Pest Management Specialist P.O. Box 1776 Williamsburg, VA 23187 (757) 220-7080 [email protected] ---------------------------------------------------------------------- To send an email to the list, send your msg to [email protected] To unsubscribe from this list send an email to [email protected] and in the subject put: "unsubscribe" - no quotes please. You are receiving the Pestlist emails in standard mode. To change to the DIGEST mode send an email to [email protected] with this command in the body: set mode digest pestlist Any problems email [email protected] or [email protected] ---------------------------------------------------------------------- To send an email to the list, send your msg to [email protected] To unsubscribe from this list send an email to [email protected] and in the subject put: "unsubscribe" - no quotes please. You are receiving the Pestlist emails in standard mode. To change to the DIGEST mode send an email to [email protected] with this command in the body: set mode digest pestlist Any problems email [email protected] or [email protected] ---------------------------------------------------------------------- To send an email to the list, send your msg to [email protected] To unsubscribe from this list send an email to [email protected] and in the subject put: "unsubscribe" - no quotes please. You are receiving the Pestlist emails in standard mode. To change to the DIGEST mode send an email to [email protected] with this command in the body: set mode digest pestlist Any problems email [email protected] or [email protected] ---------------------------------------------------------------------- To send an email to the list, send your msg to [email protected] To unsubscribe from this list send an email to [email protected] and in the subject put: "unsubscribe" - no quotes please. You are receiving the Pestlist emails in standard mode. To change to the DIGEST mode send an email to [email protected] with this command in the body: set mode digest pestlist Any problems email [email protected] or [email protected]
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