Modification and evaluation of a microwave plasma/atomic emission detector system.

Details

• Personal Author:
  Birch, M. Eileen
• Description:
  Modifications made to an Applied Chromatography Systems plasma emission detector and the evaluation of the performance of the modified instrument were described. The detector modified was the MPD-850. The overall performance of the modified equipment was much improved for carbon (7440440) determination relative to that found for the original instrument. Limits of detection were somewhat higher for the other elements examined in this study including hydrogen (1333740), fluorine (7782414), chlorine (7782505), bromine (7726956) and iodine (7553562). The carbon response for seven of the compounds examined in the study did not appear to be compound dependent when the helium flow rate was 70 milliliters/minute. Toluene (108883) and 2-chlorobutane (78864) responses were lower than expected. Carbon responses for two fluorinated compounds were also low, possibly as a result of a fluorine/quartz tube wall interaction. Modification of the original system included replacement of the 1/4 gamma cavity with a Beenakker TM010 cavity, replacement of the gas flow control unit with electronic mass flow controllers, addition of valves and plumbing associated with a solvent venting scheme, and construction of a gas chromatographic/plasma interface. [Description provided by NIOSH]
• Content Notes:
  in NTRL, no PDF
• Subjects:
  Chemistry Chemistry, Analytic Chromatography Halogens Occupational Health Safety
• Keywords:
  NIOSH-Author; Analytical-chemistry; Chemical-analysis; Chromatographic-analysis; Analytical-methods; Analytical-processes; Analytical-instruments; Halogens
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  Ohio ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DPSE - Division of Physical Sciences and Engineering
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-36
• NIOSHTIC Number:
  nn:00208298
• NTIS Accession Number:
  PB92217959
• Citation:
  NIOSH 1992 May; :1-36
• CAS Registry Number:
  2-Chlorobutane (CAS RN 78-86-4) ; Bromine (CAS RN 7726-95-6) ; Carbon (CAS RN 7440-44-0) ; Chlorine (CAS RN 7782-50-5) ; Fluorine (CAS RN 7782-41-4) ; Hydrogen (CAS RN 1333-74-0) ; Iodine (CAS RN 7553-56-2) ; Toluene (CAS RN 108-88-3)
• Federal Fiscal Year:
  1992
• Peer Reviewed:
  False
• Source Full Name:
  Division of Physical Sciences and Engineering, NIOSH, U.S. Department of Health and Human Services, Cincinnati, Ohio, 36 pages, 10 references
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d
• Download URL:
  https://stacks.cdc.gov/view/cdc/243161/cdc_243161_DS1.pdf
• File Type:
  [PDF - 168.02 KB ]