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AuthorIssa, A.A.
AuthorAl-Saad, K.A.
AuthorLuyt, A.S.
Available date2018-07-03T11:30:46Z
Publication Date2018-05
Publication NameJournal of the American Ceramic Societyen_US
Identifierhttps://doi.org/10.1111/jace.15360
CitationIssa, A. A., Al‐Saad, K. A., & Luyt, A. S. (2018). Magnetic solid phase extraction for chromatographic separation of carbamates. Journal of the American Ceramic Society, 101(5), 2038-2049.
ISSN0002-7820
URIhttp://hdl.handle.net/10576/6791
AbstractMagnetic solid phase extraction particles (MSPE) were produced using magnetite nanoparticles with diameters between 9 and 13 nm as nucleating agent. The produced particles with magnetite cores were smaller, and more irregular and polydispersed, than those produced in the absence of the magnetite particles. The average diameters of the particles were 377 and 521 nm, respectively, for silica particles with and without magnetic core, whereas the diameters of the different grafted particles were of the same order of magnitude than the silica particles with magnetic cores. BET results indicated surface areas ranging between 9 and 37 m2 g 1 The TGA results showed that the particles contained about 10% water and other solvents, and between 5 to 6% grafted groups. The thermal decomposition of the particles (presented under Supplementary Information) was autocatalytic with activation energies of 367, 546, and 616 kJ mol 1 for particles grafted with cyanopropyl (cyano), octyl, and trimethyl (TMS), respectively. The order of dispersity of the particles in water followed the sequence cyano > PMA > TMS ≫ octyl, whereas the pesticides removing efficiency followed the reverse order.
Languageen
PublisherWiley
Subjectcarbamate pesticides
Subjectfunctionalized particles
SubjectLC-MS
SubjectMagnetite
SubjectMSPE
TitleMagnetic solid phase extraction (MSPE) for chromatographic separation of carbamates.
TypeArticle
Pagination2038–2049
Issue Number5
Volume Number101
ESSN1551-2916


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