Determination of non-metals in organic compounds by gas chromatography with a miniature capacitively coupled plasma emission detector

Abstract

The microplasma detector consists of an unprecedented simple arrangement based on two cylindrical electrodes on a fused silica capillary which is operated with a high tension ac-voltage. Excellent sensitivity is achieved with optical detection for such species as pesticides.

Sample Analysis with Miniaturized Plasmas

“…The detection of Br, Cl, F, I, P, Se, and S in organic compounds separated in a helium carrier was possible by monitoring emission lines at 827.24 nm, 837.59 nm, 685.60 nm, 804.37 nm, 956.40 nm, 888.50 nm, and 921.28 nm for the seven elements, respectively. 43 The system showed the following detection limits: Br, 0.3 pg s Ϫ1 ; Cl, 0.1 pg s Ϫ1 ; F, 20 pg s Ϫ1 ; I, 158 pg s Ϫ1 ; P, 1805 pg s Ϫ1 ; Se, 153 pg s Ϫ1 ; and S, 6.6 pg s Ϫ1 . The determination of environmentally relevant halogenated volatile organic compounds and pesticides was demonstrated.…”

Application of atmospheric pressure dielectric barrier discharge plasma for the determination of Se, Sb and Sn with atomic absorption spectrometry

“…The plasma sources include the inductively coupled plasma (ICP) [13,14], the microwave induced plasma (MIP) [15], the capacitively coupled plasma (CCP) [16,17], glow discharge (GD) [18]. Recently there has been a strong interest in the development of miniaturized analytical measurement systems with microplasmas [19,20,11].…”

Microplasma-Based Detectors for Gas Chromatography: Current Status and Future Trends

“…The spectral information can be used to distinguish the components that cannot be separated by GC and can also be used to confirm the molecular formula or structure of unidentified compositions in the effluent of GC column. Furthermore, the lowest detection limit of the microplasma detectors reported in literature is approximately 0.1 pg/s (2.7 pg) for chlorine (37). However, it should be explained that the detection limits of microplasma detectors are largely dependent on the compositions and existing forms of samples.…”

“…The plasma was generated with an alternating current voltage of 20 kV and 20 kHz to yield a total power of 8 W. Argon and helium were Downloaded by [Lakehead University] at 10:23 08 December 2014 used as carrier gases with flow rates between 3 and 200 mL min −1 . Inorganic gas (47), organic compounds (48), and the nonmetals in organic compounds (37) can be detected using this CCμP. Oxygen-, hydrogen-, sulfur-, and carbon-containing species were detected based on their emissions at 777 and 845 nm, 656 nm, 923 nm, and 385 nm (due to CN), respectively.…”