rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Identification and determination of arsenic compounds by chromatographic and mass spectrometric methods
  name:
    name part: Ehrhardt, Kenneth Charles
    role:
      role term: creator
  name:
    name part: Irgolic, K. J.
    role:
      role term: degree supervisor.
  name:
    name part: Rowe, M. W.
    role:
      role term: degree committee member.
  name:
    name part: Tieh, T. T.
    role:
      role term: degree committee member.
  name:
    name part: Zingaro, Ralph A.
    role:
      role term: degree committee member.
  name:
    name part: Texas A & M University
    role:
      role term: degree granting institution.
  type of resource: text
  genre: bibliography
  genre: Academic theses
  origin info:
    place:
      place term: xx
    date issued: 1983
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: xv, 221 leaves : illustrations ; 29 cm
  abstract: Arsenate, arsenite, methylarsonic acid and dimethylarsinic acid are arsenic compounds commonly found in the environment. An efficient method combining high performance liquid chromatography with a Hitachi-Zeeman graphite furnace atomic absorption spectrophotometer was developed for the separation and quantitative determination of these four arsenic compounds. The compounds were separated by ion-pair chromatography (C-18 reverse phase column, 75% H(,2)O/25% CH(,3)OH saturated with tetraheptylammonium nitrate as the mobile phase, pure methanol for the elution of arsenate). The samples to be injected for chromatography may contain 30 to 300 ng As of each compound. The separation scheme developed for the four arsenic compounds were used to speciate these compounds in drinking waters. The mass spectral behavior or the organylarsonic acids, RAsO(,3)H(,2) (R = CH(,3), C(,2)H(,5), C(,3)H(,7), C(,9)H(,19), and C(,6)H(,5)), the diorganylarsinic acids, R(,2)AsOOH (R = CH(,3), C(,2)H(,5), C(,3)H(,7), C(,4)H(,9), C(,5)H(,11), C(,8)H(,17), c-C(,6)H(,11), C(,6)H(,5), and C(,6)H(,5)CH(,2)CH(,2)), the organyldiiodoarsines, RAsI(,2) (R = CH(,3), C(,2)H(,5), C(,3)H(,7), C(,4)H(,9), C(,5)H(,11), C(,7)H(,15), C(,9)H(,19), C(,15)H(,31), C(,17)H(,35), C(,19)H(,39), C(,6)H(,5), and C(,6)H(,5)CH(,2)CH(,2)), and the diorganyliodoarsines, R(,2)AsI (R = CH(,3), C(,8)H(,17), C(,9)H(,19), C(,11)H(,23), C(,13)H(,27), C(,14)H(,29), C(,15)H(,31), C(,17)H(,35), C(,19)H(,39), c-C(,6)H(,11), and C(,6)H(,5)CH(,2)CH(,2)) were investigated to explore the usefulness of mass spectrometry as a tool for the identification of organic arsenic compounds. The organylarsenic acids were thermally dehydrated and decomposed at the probe temperatures required to obtain satisfactory spectra. The complicated spectra of the decomposition products are not very useful for analytical purposes. The reactions of organylarsenic acids with aqueous hydriodic acid produced organyliodoarsines which are more volatile than their pa…
  note: "Major subject: Chemistry."
  note: Typescript (photocopy).
  note: Vita.
  note: Ph. D. in Philosophy Texas A & M University 1983
  note: Includes bibliographical references (leaves 212-220).
  subject:
    topic: Arsenic compounds
  subject:
    topic: Chromatographic analysis
  subject:
    topic: Mass spectrometry
  subject:
    topic: Chemistry
  identifier: http://proxy.library.tamu.edu/login
  identifier: https://hdl.handle.net/1969.1/DISSERTATIONS-541581
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: https://hdl.handle.net/1969.1/DISSERTATIONS-541581
  record info:
    record content source: TXA
    record creation date: 840831
    record change date: 20220103135120.0
    record identifier: in00000540273
    language of cataloging:
      language term: eng