Environmental applications of membrane introduction mass spectrometry

Ketola, Raimo A.; Kotiaho, Tapio; Cisper, M. E.; Allen, Todd M.

doi:10.1002/jms.327

Cited by 153 publications

(126 citation statements)

References 145 publications

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“…The majority of MIMS experiments have employed polydimethylsiloxane (PDMS, or Silicone) membranes in both sheet and hollow fiber formats [2,3,9,10]. PDMS is hydrophobic, making it well suited for the sorptive extraction and measurement of hydrophobic volatile and semivolatile organic compounds (VOCs and SVOCs) [11].…”

mentioning

confidence: 99%

Condensed Phase Membrane Introduction Mass Spectrometry with Direct Electron Ionization: On-line Measurement of PAHs in Complex Aqueous Samples

Termopoli

Famiglini

Palma

et al. 2015

J. Am. Soc. Mass Spectrom.

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Abstract. Polycyclic aromatic hydrocarbons (PAHs) are USEPA regulated priority pollutants. Their low aqueous solubility requires very sensitive analytical methods for their detection, typically involving preconcentration steps. Presented is the first demonstrated 'proof of concept' use of condensed phase membrane introduction mass spectrometry (CP-MIMS) coupled with direct liquid electron ionization (DEI) for the direct, on-line measurement of PAHs in aqueous samples. DEI is very well suited for the ionization of PAHs and other nonpolar compounds, and is not significantly influenced by the co-elution of matrix components. Linear calibration data for low ppb levels of aqueous naphthalene, anthracene, and pyrene is demonstrated, with measured detection limits of 4 ppb. Analytical response times (t 10%-90% signal rise) ranged from 2.8 min for naphthalene to 4.7 min for pyrene. Both intra-and interday reproducibility has been assessed (<3% and 5% RSD, respectively). Direct measurements of ppb level PAHs spiked in a variety of real, complex environmental sample matrices is examined, including natural waters, sea waters, and a hydrocarbon extraction production waste water sample. For these spiked, complex samples, direct PAH measurement by CP-MIMS-DEI yielded minimal signal suppression from sample matrix effects (81%-104%). We demonstrate the use of this analytical approach to directly monitor real-time changes in aqueous PAH concentrations with potential applications for continuous on-line monitoring strategies and binding/adsorption studies in heterogeneous samples.

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mentioning

confidence: 99%

Condensed Phase Membrane Introduction Mass Spectrometry with Direct Electron Ionization: On-line Measurement of PAHs in Complex Aqueous Samples

Termopoli

Famiglini

Palma

et al. 2015

J. Am. Soc. Mass Spectrom.

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“…Up until now, different kinds of miniature mass spectrometers have been developed, mainly using an ion trap as the mass analyzer, which is connected with different atmospheric pressure interfaces (APIs), including the membrane inlet (MI) [14][15][16][17], discontinuous atmospheric pressure interface (DAPI) [10,18,19], and continuous atmospheric pressure interface (CAPI) [20,21]. Among these APIs, MI was the first one to be adopted in MS systems.…”

Section: Introductionmentioning

confidence: 99%

Mini 2000: A Robust Miniature Mass Spectrometer with Continuous Atmospheric Pressure Interface

Meng

Zhang²,

Zhai

et al. 2018

Instruments

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Abstract:A miniature mass spectrometer with continuous atmospheric pressure interface (CAPI) developed previously in our lab has proved to have high stability and rapid analysis speed. With the aim of achieving smaller size, better performance and easier maintenance, in this study, an upgraded miniature mass spectrometer with CAPI was developed, in which all components were optimized and redesigned into a packaged unit. Using a more powerful pumping system, better analytical performances were obtained for this system. The miniature mass spectrometer has the capability to perform tandem mass spectrometry, and could be coupled with ambient ionization sources for analysis of different samples. Good stability (signal relative standard deviation, RSD < 5%), high sensitivity (limit of detection, LOD 10 ng/mL), better than unit mass resolution, and a broad mass range (from 150 Da to 2000 Da) were obtained. Integrated with a tablet computer for system control, the miniature mass spectrometer has dimensions of 38 cm × 23 cm × 34 cm (length × width × height), and is 13 kg in total weight. The whole system is powered by an adapter with a power consumption of 200 watts in total.

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“…The viability of environmental atmospheric monitoring using MIMS sampling has also been examined [3,12]. Other work has yielded manipulated front-end designs specifically to analyze volatile organic compounds [7].…”

Section: Introductionmentioning

confidence: 99%

Development of Multi-Membrane Near-Infrared Diode Mass Spectrometer for Field Analysis of Aromatic Hydrocarbons

Mach

Wright

Verbeck

2014

J. Am. Soc. Mass Spectrom.

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Abstract. Membrane Inlet Mass Spectrometry (MIMS) is a technique that incorporates a semi-permeable membrane selective for differing organic molecules and chemistries. This eliminates the need for time-consuming sample preparation and facilitates near instantaneous analysis. This study will examine how the front end of MIMS incorporates three dual inlet ports, allowing for differing MIMS materials and selectivity for specific environments. Polydimethylsiloxane (PDMS) membranes have proven to be selective of benzene, toluene, and xylene (BTX) as well as aromatic hydrocarbons that are common in petroleum products while remaining selective against the aliphatic chains. PDMS has proven to be a successful choice of membrane with high permeability in atmospheric environments. In addition, polycyclic aromatic hydrocarbons (PAHs) such as acenaphthene, acenapthylene, naphthalene, and fluorene have recently been detected to the 5 ppb level in a nitrogen atmosphere with our current configuration. This preliminary work provides proof of concept using near-infrared laser diodes that act upon the membrane to increase its permeability and provide higher sensitivity of aromatic samples.

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Environmental applications of membrane introduction mass spectrometry

Cited by 153 publications

References 145 publications

Condensed Phase Membrane Introduction Mass Spectrometry with Direct Electron Ionization: On-line Measurement of PAHs in Complex Aqueous Samples

Condensed Phase Membrane Introduction Mass Spectrometry with Direct Electron Ionization: On-line Measurement of PAHs in Complex Aqueous Samples

Mini 2000: A Robust Miniature Mass Spectrometer with Continuous Atmospheric Pressure Interface

Development of Multi-Membrane Near-Infrared Diode Mass Spectrometer for Field Analysis of Aromatic Hydrocarbons

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