Groom Carl A, Hawari Jalal
Biotechnology Research Institute, National Research Council of Canada, Montreal PQ, Canada.
Electrophoresis. 2007 Feb;28(3):353-9. doi: 10.1002/elps.200600269.
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 microg/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.
在水性和极性非水溶剂中，高氯酸盐（ClO₄⁺）和其他氯氧化物阴离子被观察到与六甲铵（1,6 - 双（三甲基铵）己烷）形成弱络合物。在使用与布鲁克Esquire 3000 +四极杆离子阱质量检测器联用的安捷伦（3D）CE系统进行质谱检测之前，使用2 - 丙醇/丙酮电解质通过非水毛细管电泳（NACE）分离所得的带正电络合物。采用电动进样时，非水介质中高氯酸盐的方法检测限为10μg/L。由于络合物质谱中存在³⁵Cl和³⁷Cl而产生的同位素模式使得能够明确鉴定光反应样品中的高氯酸盐、氯酸盐（ClO₃⁺）、亚氯酸盐（ClO₂⁺）和氯化物（Cl⁺）。
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