A System for the Continuous Generation of Phosphorous Aerosols from Red Phosphorus-Butyl Rubber. Chemical Characterization and Toxicological Evaluation of Airborne Mixtures

A system for the continuous generation of phosphoric acid aerosols from burning Red Phosphorus-Butyl Rubber (RPBR) is described. The system is primarily intended for inahlation toxicology experiments using high aerosol concentrations (ca. 0.3 to 3 g/cu m), but is adaptable to other studies where a t...

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Hauptverfasser:	Holmberg, R W, Moneyhun, J H, Gayle, T M
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Sprache:	eng
Schlagworte:	AEROSOL GENERATORS AEROSOLS DELIVERY HIGH RATE HYDRAULIC EQUIPMENT INHALATION MIXTURES OBSCURATION PHOSPHORIC ACIDS PHOSPHORUS PRECISION RATES SMOKE Test Facilities, Equipment and Methods Toxicology
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creator	Holmberg, R W Moneyhun, J H Gayle, T M
description	A system for the continuous generation of phosphoric acid aerosols from burning Red Phosphorus-Butyl Rubber (RPBR) is described. The system is primarily intended for inahlation toxicology experiments using high aerosol concentrations (ca. 0.3 to 3 g/cu m), but is adaptable to other studies where a time independent concentration of the aerosol is desired in a flowing system. The RPBR formulation is softened by addition of a small amount of hexane and extruded at a controlled rate at high pressure through an orifice. A precision hydraulic extrusion system using a micrometer adjustable high pressure hydraulic pump has been developed to control the extrusion rate. The emerging filament is ignited and burned in a flowing air stram for delivery to chambers. In addition to the extrusion-combustion system for aerosol generation, devices for recovering the spent aerosol and for monitoring its concentration are described.
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Chemical Characterization and Toxicological Evaluation of Airborne Mixtures</title><source>DTIC Technical Reports</source><creator>Holmberg, R W ; Moneyhun, J H ; Gayle, T M</creator><creatorcontrib>Holmberg, R W ; Moneyhun, J H ; Gayle, T M ; OAK RIDGE NATIONAL LAB TN</creatorcontrib><description>A system for the continuous generation of phosphoric acid aerosols from burning Red Phosphorus-Butyl Rubber (RPBR) is described. The system is primarily intended for inahlation toxicology experiments using high aerosol concentrations (ca. 0.3 to 3 g/cu m), but is adaptable to other studies where a time independent concentration of the aerosol is desired in a flowing system. The RPBR formulation is softened by addition of a small amount of hexane and extruded at a controlled rate at high pressure through an orifice. A precision hydraulic extrusion system using a micrometer adjustable high pressure hydraulic pump has been developed to control the extrusion rate. The emerging filament is ignited and burned in a flowing air stram for delivery to chambers. In addition to the extrusion-combustion system for aerosol generation, devices for recovering the spent aerosol and for monitoring its concentration are described.</description><language>eng</language><subject>AEROSOL GENERATORS ; AEROSOLS ; DELIVERY ; HIGH RATE ; HYDRAULIC EQUIPMENT ; INHALATION ; MIXTURES ; OBSCURATION ; PHOSPHORIC ACIDS ; PHOSPHORUS ; PRECISION ; RATES ; SMOKE ; Test Facilities, Equipment and Methods ; Toxicology</subject><creationdate>1984</creationdate><rights>Approved for public release; distribution is unlimited.</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,780,885,27567,27568</link.rule.ids><linktorsrc>$$Uhttps://apps.dtic.mil/sti/citations/ADA157342$$EView_record_in_DTIC$$FView_record_in_$$GDTIC$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Holmberg, R W</creatorcontrib><creatorcontrib>Moneyhun, J H</creatorcontrib><creatorcontrib>Gayle, T M</creatorcontrib><creatorcontrib>OAK RIDGE NATIONAL LAB TN</creatorcontrib><title>A System for the Continuous Generation of Phosphorous Aerosols from Red Phosphorus-Butyl Rubber. Chemical Characterization and Toxicological Evaluation of Airborne Mixtures</title><description>A system for the continuous generation of phosphoric acid aerosols from burning Red Phosphorus-Butyl Rubber (RPBR) is described. The system is primarily intended for inahlation toxicology experiments using high aerosol concentrations (ca. 0.3 to 3 g/cu m), but is adaptable to other studies where a time independent concentration of the aerosol is desired in a flowing system. The RPBR formulation is softened by addition of a small amount of hexane and extruded at a controlled rate at high pressure through an orifice. A precision hydraulic extrusion system using a micrometer adjustable high pressure hydraulic pump has been developed to control the extrusion rate. The emerging filament is ignited and burned in a flowing air stram for delivery to chambers. In addition to the extrusion-combustion system for aerosol generation, devices for recovering the spent aerosol and for monitoring its concentration are described.</description><subject>AEROSOL GENERATORS</subject><subject>AEROSOLS</subject><subject>DELIVERY</subject><subject>HIGH RATE</subject><subject>HYDRAULIC EQUIPMENT</subject><subject>INHALATION</subject><subject>MIXTURES</subject><subject>OBSCURATION</subject><subject>PHOSPHORIC ACIDS</subject><subject>PHOSPHORUS</subject><subject>PRECISION</subject><subject>RATES</subject><subject>SMOKE</subject><subject>Test Facilities, Equipment and Methods</subject><subject>Toxicology</subject><fulltext>true</fulltext><rsrctype>report</rsrctype><creationdate>1984</creationdate><recordtype>report</recordtype><sourceid>1RU</sourceid><recordid>eNqFjrFuwkAQRN2kQEn-gGJ_wJGCQdQXx0CDFBn36Gyv45POt9HuXgR8Uz4yTkBuqWakN5qZWfJj4HAWxQE6YtAeIaegLkSKAlsMyFYdBaAOPnqSr574jxhkEvICHdMAJbYTjZK-RT17KGNdI79A3uPgGutHY9k2iuwu104bWqjo5Bry9PkfKb6tj9OgcVwTB4S9O2lklKfkobNe8Pmmj8l8U1T5Lm3VNUcZb6Mezbt5Xa2z5SK7g38BLo9XDw</recordid><startdate>198405</startdate><enddate>198405</enddate><creator>Holmberg, R W</creator><creator>Moneyhun, J H</creator><creator>Gayle, T M</creator><scope>1RU</scope><scope>BHM</scope></search><sort><creationdate>198405</creationdate><title>A System for the Continuous Generation of Phosphorous Aerosols from Red Phosphorus-Butyl Rubber. 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Chemical Characterization and Toxicological Evaluation of Airborne Mixtures</btitle><date>1984-05</date><risdate>1984</risdate><abstract>A system for the continuous generation of phosphoric acid aerosols from burning Red Phosphorus-Butyl Rubber (RPBR) is described. The system is primarily intended for inahlation toxicology experiments using high aerosol concentrations (ca. 0.3 to 3 g/cu m), but is adaptable to other studies where a time independent concentration of the aerosol is desired in a flowing system. The RPBR formulation is softened by addition of a small amount of hexane and extruded at a controlled rate at high pressure through an orifice. A precision hydraulic extrusion system using a micrometer adjustable high pressure hydraulic pump has been developed to control the extrusion rate. The emerging filament is ignited and burned in a flowing air stram for delivery to chambers. In addition to the extrusion-combustion system for aerosol generation, devices for recovering the spent aerosol and for monitoring its concentration are described.</abstract><oa>free_for_read</oa></addata></record>
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subjects	AEROSOL GENERATORS AEROSOLS DELIVERY HIGH RATE HYDRAULIC EQUIPMENT INHALATION MIXTURES OBSCURATION PHOSPHORIC ACIDS PHOSPHORUS PRECISION RATES SMOKE Test Facilities, Equipment and Methods Toxicology
title	A System for the Continuous Generation of Phosphorous Aerosols from Red Phosphorus-Butyl Rubber. Chemical Characterization and Toxicological Evaluation of Airborne Mixtures
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