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Detection of hexamethonium‐perchlorate association complexes using NACE‐MS
Author(s) -
Groom Carl A.,
Hawari Jalal
Publication year - 2007
Publication title -
electrophoresis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.666
H-Index - 158
eISSN - 1522-2683
pISSN - 0173-0835
DOI - 10.1002/elps.200600269
Subject(s) - perchlorate , chemistry , chlorate , chloride , detection limit , chlorine , aqueous solution , inorganic chemistry , mass spectrometry , perchloric acid , ion , chromatography , organic chemistry
Abstract Perchlorate (ClO 4 + ) and other chlorine oxide anions were observed to complex weakly with hexamethonium (1,6‐ bis ‐(trimethylammonium)‐hexane) in both aqueous and polar nonaqueous solvents. The resultant positively charged complexes were resolved by NACE using 2‐propanol/acetone electrolytes prior to mass spectrometric detection using an Agilent 3D CE system coupled to a Bruker Esquire 3000+ quadrupole IT mass detector. Using electrokinetic injection, the method detection limit for perchlorate in nonaqueous media was 10 μg/L. The isotope patterns due to the presence of 35 Cl and 37 Cl in complex mass spectra allowed for unambiguous identification of perchlorate, chlorate (ClO 3 + ), chlorite (ClO 2 + ), and chloride (Cl + ) in photoreaction samples.