Premium
SPE for the simultaneous determination of various isothiocyanates
Author(s) -
Wilson Eli Adjélé,
Bindler Françoise,
Marchioni Eric,
Bergaentzlé Martine,
Benrabah Tamime,
Ennahar Saïd
Publication year - 2012
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.201200539
Subject(s) - sorbent , chemistry , divinylbenzene , extraction (chemistry) , copolymer , polyamide , amide , chromatography , solid phase extraction , polymer , organic chemistry , adsorption , styrene
Several SPE sorbents were investigated for the extraction of a group of chemically diverse isothiocyanates ( ITC s). They included bonded silica, carbon‐based, and polymer‐based sorbents with various functional groups. Results showed large differences in the ability of these sorbents to simultaneously extract ITC s from standard solutions. Recovery rates were on average the highest with divinylbenzene ( DVB ) based polymeric sorbents, especially with a DVB / N ‐vinylpyrrolidone copolymer that had recovery rates ranging between 86.7 and 95.6%. These sorbents achieved the most balanced extraction efficiency between aliphatic and aromatic, polar, and nonpolar ITC s. With graphitized carbon, C 18 ‐bonded silica, and amide‐containing sorbent, recovery levels were higher for the two least polar aromatic ITC s (benzyl ITC and phenylethyl ITC ), whereas for the polar aliphatic ITC s levels were the lowest. The least retained one, was methyl ITC that is the most polar with recoveries between 0 and 31.5%. The presence of amide groups, especially in a polyamide sorbent, appeared to be particularly unsuitable for the extraction of aliphatic ITC s. A copolymer made up of DVB and N ‐vinylpyrrolidone was therefore shown to be the most suited for the extraction of both aliphatic and aromatic ITC s.