VUV Single-Photon Ionization Ion Trap Time-of-Flight Mass Spectrometer for On-Line, Real-Time Monitoring of Chlorinated Organic Compounds in Waste Incineration Flue Gas

Kuribayashi, S.; Yamakoshi, Hideo; Danno, Minoru; Sakai, Satoshi; Tsuruga, Shigenori; Futami, Hiroshi; Morii, Shigeki

doi:10.1021/ac048761y

Cited by 55 publications

(57 citation statements)

References 19 publications

(20 reference statements)

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“…Compared with the series of lamp-based VUV-PIMS developed by Mühlberger et al (2007Mühlberger et al ( , 2005aMühlberger et al ( , b, 2002 and that by Hua et al (2011), the VUV-PIMS developed herein exhibits an improvement in sensitivity by 3 orders of magnitude. The sensitivity of this instrument even exceeded that of the lamp-based VUV-PI-ion-trap-MS developed by Kuribayashi et al (2005). Considering that both Kuribayashi et al and our group utilized similar VUV photon fluxes, we believe that the ion-migration lens assembly designed herein is very effective.…”

Section: Limits Of Detectionmentioning

confidence: 80%

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Real-time monitoring of trace-level VOCs by an ultrasensitive lamp-based VUV photoionization mass spectrometer

et al. 2015

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Abstract. In this study, we report on the development of a lamp-based vacuum ultraviolet photoionization mass spectrometer (VUV-PIMS) in our laboratory; it is composed of a radio-frequency-powered VUV lamp, a VUV photoionizer, an ion-migration lens assembly, and a reflection timeof-flight mass spectrometer. By utilizing the novel photoionizer consisting of a photoionization cavity and a VUV light baffle, the baselines of the mass spectra decreased from 263.6 ± 15.7 counts to 4.1 ± 1.8 counts. A detection limit (2σ ) of 3 pptv was achieved for benzene after an acquisition time of 10 s. To examine its potential for real-time monitoring applications of samples, the developed VUV-PIMS was employed for the continuous measurement of urban air for 6 days in Beijing, China. Strong signals of trace-level volatile organic compounds, such as benzene and its alkylated derivatives, were observed in the mass spectra. These initial experimental results reveal that the instrument can be used for the online monitoring of trace-level species in the atmosphere.

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Section: Limits Of Detectionmentioning

confidence: 80%

“…The LODs observed for benzene, toluene, and xylene are as low as 3, 4, and 6 ppbv, respectively, in the SPI mode. Meanwhile, Kuribayashi et al (2005) have developed a VUV-PI-ion-trap MS with a microwave-excited VUV lamp and observed an LOD of 10 pptv for trichlorobenzene after an acquisition time of 18 s.…”

Section: Introductionmentioning

confidence: 99%

Real-time monitoring of trace-level VOCs by an ultrasensitive lamp-based VUV photoionization mass spectrometer

et al. 2015

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“…A incineração pode levar à formação de substâncias parcialmente oxidadas, e.g. dioxinas e dibenzofuranos, que apresentam alta toxicidade [3,4] . O co-processamento é uma alternativa que tem sido cada vez mais utilizada para a destinação de rejeitos de borracha, mas devido ao custo relativamente alto, necessidade de trituração e impossibilidade de recuperar as estruturas metálicas, sua aplicação tem sido limitada.…”

Section: Introductionunclassified

Pirólise de resíduos de borrachas do setor de mineração para a produção de combustíveis: estudos em escala piloto

et al. 2017

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ResumoNeste trabalho, estudou-se em escala piloto a pirólise de três diferentes rejeitos de borracha do setor de mineração, i.e. peças de moinho de composição nominal de borracha estireno e butadieno (SBR), peneiras e correias transportadoras com composição nominal à base de borracha natural e butadieno (NR/BR) e pneus offroad de composição complexa (mistura de borracha natural, nitrílica, butadieno e estireno-butadieno) em temperaturas de 450, 600 e 800°C. As reações realizadas a 450°C mostraram uma pirólise incompleta, sendo que a 600 e 800°C os rejeitos de borracha se convertem totalmente em três produtos: 15-25% de gás, 42-44% sólido e 34-45% de líquido. Análises por cromatografia gasosa (CG) dos produtos gasosos mostraram majoritariamente a presença de hidrocarbonetos C 1 -C 4 com valores de poder calorífico inferior (PCI) iguais a 8.496 e 7.325 kcal kg -1 , similares ao gás liquefeito de petróleo (GLP). Análise dos sólidos obtidos por análise elementar de carbono, hidrogênio e nitrogênio (CHN), espectrômetria de emissão atômica com plasma induzido (ICP-AES) Spectro Ciros CCD para a determinação de enxofre, análise térmica gravimétrica e diferencial (TG/DTA), carbono fixo, cinzas, voláteis mostraram a presença de 72-89% de carbono com 2% de enxofre. Análises dos produtos líquidos por cromatografia gasosa acoplado a espectrometria de massas (CG-EM) indicaram a presença de misturas complexas de hidrocarbonetos majoritariamente até C20. As amostras NR/BR e pneu produzem líquidos com concentração de compostos aromáticos próxima a 50%, enquanto a amostra SBR resulta na formação de um líquido de concentração próxima a 87%. A mistura dessa fração líquida obtida pela pirólise (sem qualquer purificação) com um diesel comercial nas proporções de 0,5, 1 e 3 vol% mostrou que nenhum parâmetro de qualidade de combustível definido pela ANP (Agência Nacional do Petróleo, Gás Natural e Biocombustíveis) foi alterado significativamente. Palavras-chave: resíduos de borracha, mineração, pirólise. AbstractIn this work, the pyrolysis of three different rubber wastes used in the mining industry, i.e. milling (based on styrene butadiene rubber, SBR), sieves and conveyor belts (based on natural and butadiene rubber, NR/BR) and offroad waste tires (based on complex mixture of nitrile, butadiene, styrene and natural rubber) was investigated in a pilot plant at 450, 600 and 800°C. Reactions at 450°C showed incomplete pyrolysis whereas at 600 and 800°C the rubber wastes were completely converted into three products:15-25% gas, 34-45% liquid and 42-44% solids. The gas products analyzed by gas chromatography (GC) showed mainly the presence of C 1 -C 4 hydrocarbons with LHV (Low Heating Value) values between 8496 and 7325 Kcal kg -1 , similar to liquefied petroleum gas (LPG). The solid products analyzed by elemental analysis of carbon, hydrogen and nitrogen (CHN), atomic emission spectrometry with inductively coupled plasma (ICP-AES) Spectro Ciros CCD for the determination of sulfur, thermogravimetry and differential thermal analysis (TG/D...

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“…Nearly all of the organic compounds have ionization energy bands lying within the energy range 8-11 eV, making rare gas lamps ideal light sources for detection of organic molecules (Butcher et al 1999). In recent mass spectrometry studies, lamp sources with photon intensities on the order of 10 13 -10 14 photons sec −1 have been reported Kurabuyashi et al 2005). In other studies, a rare gas lamp pumped with electrons was used to provide a focused source of VUV photons at the excimer emission lines (Mühlberger et al 2005a(Mühlberger et al , 2005b.…”

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confidence: 99%

Development of Soft Ionization for Particulate Organic Detection with the Aerodyne Aerosol Mass Spectrometer

Trimborn¹,

Williams²,

Jayne³

et al. 2008

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In this DoE-supported SBIR Phase II project, we have developed several soft ionization techniques for use with the Aerodyne Aerosol Mass Spectrometer (AMS). The AMS allows quantitative, real-time, size and composition analysis of atmospheric aerosol particles . AMS measurements of aerosol chemistry are routine and are now standard in most field campaigns, including those supported by DoE as well as other agencies (worldwide) [Canagaratna et al., 2007;. This work has recently been highlighted in Science [Robinson et al., 2007] which used laboratory and field AMS results to estimate regional secondary organic aerosol (SOA) budgets. That work drew heavily on DoE-supported AMS results from Mexico City in 2003 [Volkamer et al., 2006] that showed that photochemical SOA production occurs daily on a time scale of hours in Mexico City. Additionally, the AMS is now routinely used in chamber studies of the chemistry of SOA formation, allowing for the chemical characterization of laboratory-generated organic aerosol [Bahreini et al., 2005; Alfarra et al., 2006]. Recently we have developed a time-of-flight mass spectrometer version of the AMS (ToF-AMS), leading to substantial increases in the sensitivity, resolution, and data acquisition rate of the instrument . This development, which included significant DoE support, has led to the deployment of over 20 ToF-AMS systems worldwide, including two in DoE laboratories, and deployment on the DoE G-1 aircraft.The goal of this project is to enhance the molecular information that can be derived from aerosol mass spectra. The standard mode of AMS operation involves ionization by electron impact (EI), which is a proven, quantitative technique, but involves the extensive fragmentation of individual ions, making the identification and characterization of individual organics in the aerosol rather difficult. During this DOE SBIR Phase II project, we have developed several soft ionization techniques, i.e., ionization schemes which involve less fragmentation of the ions, for use with the ToF-AMS. This SBIR program has successfully accomplished the tasks in the Phase II proposal, including:1. Vacuum ultraviolet single photon ionization was demonstrated in the laboratory and deployed in field campaigns [Northway et al., 2007]. This demonstration has led to collaboration with a German group [Mühlberger et al., 2005b] to continue VUV lamp development undertaken by the University of Colorado during the SBIR. 2. Dissociative electron attachment is also now a routine approach with AMS systems configured for bipolar, negative ion detection. This technique is particularly powerful for detection of acidic and other highly oxygenated SOA chemical functionality. 3. Low energy electron ionization is now a "softer" ionization approach routinely available to AMS users. 4. Lithium ion (Li + ) attachment has been shown to be sensitive to more alkyl-like chemical functionality in SOA. Results from Mexico City are particularly exciting in observing changes in SOA molecular composition under different phot...

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VUV Single-Photon Ionization Ion Trap Time-of-Flight Mass Spectrometer for On-Line, Real-Time Monitoring of Chlorinated Organic Compounds in Waste Incineration Flue Gas

Cited by 55 publications

References 19 publications

Real-time monitoring of trace-level VOCs by an ultrasensitive lamp-based VUV photoionization mass spectrometer

Real-time monitoring of trace-level VOCs by an ultrasensitive lamp-based VUV photoionization mass spectrometer

Pirólise de resíduos de borrachas do setor de mineração para a produção de combustíveis: estudos em escala piloto

Development of Soft Ionization for Particulate Organic Detection with the Aerodyne Aerosol Mass Spectrometer

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