Detection of Chlorobenzene Derivatives Using Vacuum Ultraviolet Ionization Time-of-Flight Mass Spectrometry

Tonokura, Kenichi; Nakamura, T.; Koshi, Mitsuo

doi:10.2116/analsci.19.1109

Cited by 26 publications

(25 citation statements)

References 32 publications

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“…In the past different chromatographic and spectroscopic techniques have been tested and used for the detection of chlorophenols in wastewater [3][4][5]. These methods, however, can be quite time consuming.…”

Section: Introductionmentioning

confidence: 99%

The electrochemical detection of 4-chlorophenol at gold electrodes modified with different phthalocyanines

Peeters

Wael

Bogaert

et al. 2008

Sensors and Actuators B: Chemical

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Because of their toxicity to humans and their tendency to bioaccumulate in the food chain, the detection of chlorophenols has been investigated intensively. This paper compares the oxidation of 4-chlorophenol on a bare gold electrode to its detection on gold electrodes electrochemically modified with either cobalt(II) tetrasulphonated phthalocyanine (CoTSPc) or 3,4 ,4 ,4 -copper(II) tetrasulphonated phthalocyanine (CuTSPc). Results show that the electrochemical behaviour of 4-chlorophenol depends on the molecular structure of the phthalocyanine thin film layers on the gold surface. In addition, the influence of the coordinating properties of the phthalocyanines on the sensitivity of the measurement and the fouling of the electrode material is discussed.

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Section: Introductionmentioning

confidence: 99%

The electrochemical detection of 4-chlorophenol at gold electrodes modified with different phthalocyanines

Peeters

Wael

Bogaert

et al. 2008

Sensors and Actuators B: Chemical

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“…Use of a detector of greater sensitivity probably could improve detection sensitivity by up to two orders [78]. Using VUV generated by frequency tripling, experiments on various TOFMS setups have yielded reported detection limits on aromatics in the range of several ppbv to hundred ppbv [32,33,36,37]. Comparison with these values suggests that our 118 nm sensitivity can be increased by one order or more.…”

Section: Species Detection Using ∼800 Nm ∼150 Fs Pi Pulsesmentioning

confidence: 99%

“…Because of the high sensitivity and the ability to identify species as a function of mass, TOFMS already has a fairly long history in environmental trace detection [27][28][29][30][31][32][33][34][35][36][37]. In a context that bears significant resemblances to possible post-NTP species analysis, molecular beam-based flame and pyrolysis analysis are already established; there is a continuing stream of productive work in this area [38][39][40][41].…”

Section: Introductionmentioning

confidence: 99%

Highly Reliable Dynamic Random Access Memory Technology for Application Specific Memory with Dual Nitrogen Concentration Gate Oxynitrides Using Selective Nitrogen Implantation

Sugizaki¹,

Murakoshi²,

Katsumata³

et al. 2003

Jpn. J. Appl. Phys.

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Nonthermal plasma (NTP)-based treatments of volatile organic compounds (VOCs) have potential for effective environmental remediation. Theory and experiment that consider the basic science pertaining to discharge events have helped improve NTP remediation outcomes. If direct information on early post-discharge chemical intermediates were also available, it would likely lead to additional improvement in NTP remediation outcomes. To this point, however, experiments yielding direct information on post-NTP VOC intermediates have been limited. An approach using supersonic expansion molecular beam methods offers general promise for detection of post-discharge VOC intermediates. To illustrate the potential utility of these methods, we present mass spectra showing the growth of early products formed when pulsed corona discharges were carried out on toluene in He and then in He with added O 2 . Good general detection of neutral post-discharge species was obtained using 800 nm 150 fs photoionization pulses.

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“…Vacuum ultraviolet (VUV) single photon and resonant multiphoton PI methods already are established in environmental trace analysis [8][9][10][11][12][13][14][15][16][17][18]. Molecular beam procedures and detection capabilities that have been already well employed in flame/pyrolysis product analysis [19][20][21][22] can be similarly applied in experiments involving discharges.…”

Section: Introductionmentioning

confidence: 99%

Post Discharge Chemistry of Aromatic Molecules in Rare Gas

Sulkes

2011

Plasma Chem Plasma Process

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We have employed 800 nm 150 fs laser pulses to carry out photoionization (PI) time-of-flight mass spectrometric detection of intermediates following corona discharges on aromatic molecules (alkylbenzenes and pyridine) in He, stabilized by subsequent supersonic gas expansions. Observed product peaks appear to be at least roughly in proportion to actual number densities; PI induced fragmentation of parent ions appears not to be excessive. Consequently, 800 nm fs PI should be useful for general product analysis applications in plasma chemistry. For most alkylbenzenes subjected to corona discharges in rare gas, the overall trends in product chemistry are similar in many respects to observed flame and pyrolysis chemistry in rare gases for the same species. Following discharge, as in those other cases, H deficient carbon radical fragments initially produced react in turn to form larger aromatic species. However, compared with flame/pyrolysis, discharge produced a larger number of fragment species, which can lead to a wider and somewhat different range of higher mass aromatic products. Co-addition of even a small component of O 2 to the discharge mixes has a potent effect in inhibiting formation of higher mass aromatic products in alkylbenzenes.

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Detection of Chlorobenzene Derivatives Using Vacuum Ultraviolet Ionization Time-of-Flight Mass Spectrometry

Cited by 26 publications

References 32 publications

The electrochemical detection of 4-chlorophenol at gold electrodes modified with different phthalocyanines

The electrochemical detection of 4-chlorophenol at gold electrodes modified with different phthalocyanines

Highly Reliable Dynamic Random Access Memory Technology for Application Specific Memory with Dual Nitrogen Concentration Gate Oxynitrides Using Selective Nitrogen Implantation

Post Discharge Chemistry of Aromatic Molecules in Rare Gas

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