Search Results - "Bell, Ryan J."

A Field-Portable Membrane Introduction Mass Spectrometer for Real-time Quantitation and Spatial Mapping of Atmospheric and Aqueous Contaminants by Bell, Ryan J., Davey, Nicholas G., Martinsen, Morten, Collin-Hansen, Christian, Krogh, Erik T., Gill, Christopher G.

“…Environmental concentrations of volatile and semivolatile organic compounds (VOC/SVOCs) can vary dramatically in time and space under the influence of…”
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A membrane introduction mass spectrometer utilizing ion-molecule reactions for the on-line speciation and quantitation of volatile organic molecules by Davey, Nicholas G., Bell, Ryan J., Krogh, Erik T., Gill, Chris G.

“…Rationale The ability of membrane introduction mass spectrometry to quantitatively resolve low molecular weight volatile organic compounds (VOCs) such as…”
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In situ determination of total dissolved inorganic carbon by underwater membrane introduction mass spectrometry by Bell, Ryan J., Short, R. Timothy, Byrne, Robert H.

“…Procedures have been developed for the determination of total dissolved inorganic carbon (DIC) in acidified seawater using an underwater mass spectrometer…”
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The Effect of the Earth’s and Stray Magnetic Fields on Mobile Mass Spectrometer Systems by Bell, Ryan J., Davey, Nicholas G., Martinsen, Morten, Short, R. Timothy, Gill, Chris G., Krogh, Erik T.

“…Development of small, field-portable mass spectrometers has enabled a rapid growth of in-field measurements on mobile platforms. In such in-field measurements,…”
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Calibration of an In Situ Membrane Inlet Mass Spectrometer for Measurements of Dissolved Gases and Volatile Organics in Seawater by Bell, Ryan J, Short, R. Timothy, van Amerom, Friso H. W, Byrne, Robert H

“…Use of membrane inlet mass spectrometers (MIMS) for quantitative measurements of dissolved gases and volatile organics over a wide range of ocean depths…”
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A field portable membrane introduction mass spectrometer with in-line standard infusion and sample heat exchanger for real-time monitoring of volatile organic compounds in aqueous samples by Martinsen, Morten R., Davey, Nicholas G., Bell, Ryan J., Krogh, Erik T., Gill, Chris G., Mikkelsen, Øyvind, Schmid, Rudolf

“…Maintaining a steady sample temperature when analyzing real-time samples in the field is crucial for Membrane Introduction Mass Spectrometry (MIMS). Diffusion…”
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Evaluation of reagentless pH modification for in situ ocean analysis: determination of dissolved inorganic carbon using mass spectrometry by Cardenas-Valencia, Andres M., Adornato, Lori R., Bell, Ryan J., Byrne, Robert H., Short, R. Timothy

“…RATIONALE In situ analytical techniques that require the storage and delivery of reagents (e.g., acidic or basic solutions) have inherent durability…”
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In situ determination of porewater gases by underwater flow-through membrane inlet mass spectrometry by Bell, Ryan J., Savidge, William B., Toler, Strawn K., Byrne, Robert H., Short, R. Timothy

“…An underwater membrane introduction mass spectrometer was deployed in permeable sandy sediment on the Georgia continental shelf (depth = 27 m) to measure in…”
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Method for Quantification of Chemicals in a Pollution Plume Using a Moving Membrane-Based Sensor Exemplified by Mass Spectrometry by Janfelt, Christian, Lauritsen, Frants R, Toler, Strawn K, Bell, Ryan J, Short, R. Timothy

“…Quantification of a chemical concentration in a pollution plume using a moving membrane-based sensor can be problematic. In many cases, the sensor passes…”
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In situ determination of porewater gases by underwater flow-through membrane inlet mass spectrometry by Bell, Ryan J., Savidge, William B., Toler, Strawn K., Byrne, Robert H., Short, R. Timothy

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Development and deployment of an underwater mass spectrometer for quantitative measurements of dissolved gases by Bell, Ryan J

“…Manual collection and processing of seawater samples for dissolved gas analyses are technically challenging, time consuming and costly. Accordingly, in situ…”
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Mapping the geospatial distribution of atmospheric BTEX compounds using portable mass spectrometry and adaptive whole air sampling by Davey, Nicholas G., Bell, Ryan J., Gill, Chris G., Krogh, Erik T.

“…Atmospheric environmental monitoring with mobile laboratories is becoming more common as instrumentation evolves and the benefits of taking the lab-to-sample…”
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A membrane introduction mass spectrometer utilizing ion-molecule reactions for the on-line speciation and quantitation of volatile organic molecules: CI-MIMS for VOCs by Davey, Nicholas G., Bell, Ryan J., Krogh, Erik T., Gill, Chris G.

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Calibration of an In Situ Membrane Inlet Mass Spectromter for Measurements of Dissolved Gases and Volatile Organics in Seawater by Bell, Ryan J, Short, RTimothy, Van Amerom, Friso HW, Byrne, Robert H

“…An in situ membrane inlet mass spectrometer (MIMS) for measurements of dissolved gases and volatile organics in seawater was calibrated. MIMS ion currents were…”
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Development and deployment of an underwater mass spectrometer for quantitative measurements of dissolved gases by Bell, Ryan J

“…Manual collection and processing of seawater samples for dissolved gas analyses are technically challenging, time consuming and costly. Accordingly, in situ…”
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