#aihce PO 123 Real Time Detection Systems II Presenting Author: Jennifer Maclachlan , PID Analyzers, LLC Live tweeting during this session? Use hashtag #RTDS2 in addition to the conference hashtag #AIHce DATE: Wednesday June 4, 2014 | 10:00 AM - 12:00 PM LOCATION: San Antonio, TX Convention Center 0006 C-D TOPIC: Real-Time Detection Systems See PID Analyzers at booth 3089
The American Industrial Hygiene Association Real Time Detection Systems Committee (RTDSC) provides technical programs at the AIHCE meeting related to real-time detection systems (RTDS). This program is part 2 of 2 that will be taking place in San Antonio, TX June 3-June 4 2014.
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
#aihce
PO 123Real Time Detection Systems II
Presenting Author: Jennifer Maclachlan,
PID Analyzers, LLC
Live tweeting during this session? Use hashtag #RTDS2 in addition to the conference hashtag #AIHce
DATE: Wednesday June 4, 2014 | 10:00 AM - 12:00 PM
LOCATION: San Antonio, TX Convention Center 0006 C-D
Real-Time Detection Systems IIArranger: W. Groves, Energy and Mineral Engineering, Penn State University, University Park, PAModerator: P. Smith, U.S. Department of Labor - OSHA, Sandy, UTMonitors: E. Ligus, Draeger Safety, Inc., Pittsburgh, PA; T. Pearce, OSHA, Edmond, OK10:00 AM – 10:30 AMField Measurement of Common Fumigants via Portable GC with PID & FUV DetectorsJ. Driscoll, J. Maclachlan, PID Analyzers, LLC, Sandwich, Massachusetts, MA10:30 AM – 11:00 AMThe Needle Trap Device as Sampler or Focusing Trap: Quantitative and Sensitivity Comparability of GC Injection Port Solvent and Thermal Desorption Analyte IntroductionT. Juarez, S. Strating, M. Stevens, D. White, Uniformed Services University of the Health Sciences, Bethesda, MD; P. Smith, U. S. Department of Labor-OSHA, Health Response Team, Salt Lake Technical Center, Sandy, UT11:00 AM – 11:30 AMElimination of Sensor Maintenance by Sensor Interrogation and CorrectionT. Scheffler, Mine Safety Appliances Co., Cranberry Township, PA11:30 AM – 12:00 PMEstimating Integrated VOC Exposure in Near Real-TimeE. Floyd, University of Oklahoma, Oklahoma City, OK; C. Lungu, University of Alabama at Birmingham, Birmingham, AL- See more at: http://aihce2014.org/course/real-time-detection-systems-ii/#sthash.JpNFdp80.dpuf
Field Measurement of Common Fumigants via Portable GC with PID & FUV Detectors
By: Jennifer Maclachlan and Jack Driscoll
Live tweeting use: #RTDS2 #AIHce
Objective: More than two dozen different chemicals have been used as fumigants for grain including organics like methyl bromide, inorganic chemicals
like sulfuryl fluoride ,and even chemical agents such as cyanogen chloride. Deaths from fumigants have occurred in rail cars, ships, grain elevators, green
houses, pest control … A field method for detecting common fumigants is essential since many workers encounter these dangerous chemicals which do
Field Measurement of Common Fumigants via Portable GC with PID & FUV Detectors
By: Jennifer Maclachlan and Jack DriscollLive tweeting use: #RTDS2 #AIHce
Methods: Utilizing a portable gas chromatograph Model GC312 equipped with a battery and weighing in at 26 pounds, this field tool can detect part per billion
(ppb) levels of fumigants with a photoionization detector (PID). A 30M x 0.32 mm capillary with 5 or 10 micron methyl silicone film is used for separating gases
and volatile compounds. The far UV absorbance (FUV) detector detects the low or sub ppm levels of a variety of hydrocarbons & low molecular weight (MW)
gases such as hydrogen cyanide, sulfur dioxide, and sulfuryl fluoride that absorb at 126 nano meters (nm).
Field Measurement of Common Fumigants via Portable GC with PID & FUV Detectors
By: Jennifer Maclachlan and Jack DriscollLive tweeting use: #RTDS2 #AIHce
Results : Some of the common fumigants used today are methyl bromide, ethylene oxide, phosphine, and ethylene dibromide. All of these compounds can be detected at ppb levels by GC/PID with a thick film capillary column. The PID has a detection limit of < 5 ppb
for PH3, and can detect part per trillion (ppt) levels of dibromochloro propane (PEL = 1ppb) by PID if the internal
concentrator on the portable GC is used. The FUV can detect hydrogen cyanide, ethylene dichloride, dichloropropane, sulfur
dioxide and sulfuryl fluoride at low or sub ppm levels. The detection limit for SO2 by FUV is 0.5 ppm.
Field Measurement of Common Fumigants via Portable GC with PID & FUV Detectors
By: Jennifer Maclachlan and Jack DriscollLive tweeting use: #RTDS2 #AIHce
Conclusions: A portable GC with a thick film cap column equipped with PID and Far UV detectors can detect the most common fumigants in use today at
levels of 0.1 of the PEL. The portable GC is easily carried to the field and can be operational in about 20-30 minutes. It can detect the ten most common
fumigants described above plus many of the more than two dozen chemicals used in fumigation.