Desorption of organic analytes from activated carbon. I. Factors affecting the process.

Details

• Personal Author:
  Okenfuss JR ; Posner, Judd C.
• Description:
  Factors affecting the desorption of organic analytes from activated carbon (7440440) were investigated, using a statistical design employing a two level factorial protocol. Loading of the sorbent per 100 milligrams charcoal, volume of the desorbent agent, and the presence or absence of compounds other than the analyte were examined. Carbon-disulfide (75150) (CS2) was used as the desorbent. Test analytes were 2-ethoxyethyl-acetate (111159) (cellosolve- acetate), 2-butoxyethanol (111762) (butyl-cellosolve), n-butanol (71363), toluene (108883), and biphenyl (92524). Mixture tested consisted of a polar mixture containing cellosolve-acetate, butyl- cellosolve, n-butanol, and toluene; a mixture of a polar and nonpolar compound of cellosolve-acetate and biphenyl; and a mixture of two nonpolar compounds containing biphenyl and toluene. All factors were tested at a high and a low range. Desorption efficiencies were: 100 percent for toluene; 47 to 92 percent for butanol; 53 to 103 for cellosolve-acetate in the polar mixture experiment and 53 to 97 percent in the polar/nonpolar experiment; 12 to 77 percent for butyl-cellosolve; and 58 to 92 percent for biphenyl. For nonpolar compounds and for a mixture of a polar and nonpolar compound, no effect was observed for the presence of any one compound in the mixture on the desorption efficiency of the others. For polar compounds a dependency was seen on the presence of other compounds. The authors suggest that an adequate explanation of all the main effects and interactions, including the signs of the latter, can be advanced on equilibrium grounds. [Description provided by NIOSH]
• Subjects:
  Chemistry Chemistry, Analytic Environmental Monitoring Occupational Health Safety Solvents
• Keywords:
  Air-sampling-equipment Analytical-chemistry Analytical-methods Analytical-processes Filters NIOSH-Author Organic-solvents
• ISSN:
  0002-8894
• 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
• Volume:
  42
• Issue:
  9
• NIOSHTIC Number:
  nn:00123846
• Citation:
  Am Ind Hyg Assoc J 1981 Sep; 42(9):643-646
• Contact Point Address:
  Judd C. Posner, Centers for Disease Control, National Institute for Occupational Safety and Health, Division of Physical Sciences and Engineering, 4676 Columbia Parkway, Cincinnati, Ohio 45226
• CAS Registry Number:
  1-Butanol (CAS RN 71-36-3) ; 2-Butoxyethanol (CAS RN 111-76-2) ; Biphenyl (CAS RN 92-52-4) ; Carbon (CAS RN 7440-44-0) ; Carbon disulfide (CAS RN 75-15-0) ; Glycol monoethyl ether acetate (CAS RN 111-15-9) ; Toluene (CAS RN 108-88-3)
• Federal Fiscal Year:
  1981
• Peer Reviewed:
  True
• Source Full Name:
  American Industrial Hygiene Association Journal
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:39ad951a5c7d9ff22409e2d77baef47c9eb4790def896df9e07ff93e0edfa2c94017804c30499bc166f368502866af4e4b7e611b8362e41416ff44e7c44c3ea9
• Download URL:
  https://stacks.cdc.gov/view/cdc/184563/cdc_184563_DS1.pdf
• File Type:
  [PDF - 491.42 KB ]