Autonomous in Situ Analysis and Real-Time Chemical Detection Using a Backpack Miniature Mass Spectrometer: Concept, Instrumentation Development, and Performance

2014 ◽  
Vol 86 (6) ◽  
pp. 2900-2908 ◽  
Author(s):  
Paul I. Hendricks ◽  
Jon K. Dalgleish ◽  
Jacob T. Shelley ◽  
Matthew A. Kirleis ◽  
Matthew T. McNicholas ◽  
...  
Keyword(s):  
Real Time ◽  
Mass Spectrometer ◽  
In Situ Analysis ◽  
Chemical Detection ◽  
Miniature Mass Spectrometer ◽  
And Performance

Smart Sensor Technologies for Performance Optimization of Power Generating Assets

2019 ◽  
Author(s):  
Komandur Sunder Raj
Keyword(s):  
Real Time ◽  
Wireless Sensors ◽  
In Situ Monitoring ◽  
Operating Costs ◽  
Embedded Sensors ◽  
Harsh Environments ◽  
Smart Sensor ◽  
And Performance ◽  
Combustion Monitoring

Abstract Significant research is ongoing on several fronts in smart sensor technologies for optimizing the performance of power generating assets. The initiatives include: 1. Real-time models with advanced computational algorithms, embedded intelligence at sensor and component level for reducing operating costs, improving efficiencies, and lowering emissions. 2. Optical sapphire sensors for monitoring operation and performance of critical components in harsh environments, for improving accuracy of measurements in combustion monitoring, and lowering operating costs. 3. Wireless technologies using (a) microwave acoustic sensors for real-time monitoring of equipment in high temperature/pressure environments (b) integrated gas/temperature acoustic sensors for combustion monitoring in diverse harsh environment locations to improve combustion efficiency, reduce emissions, and lower maintenance costs (c) sensors for sensing temperature, strain and soot accumulation inside coal-fired boilers for detailed condition monitoring, better understanding of combustion and heat exchange processes, improved designs, more efficient operation. 4. Distributed optical fiber sensing system for real-time monitoring and optimization of high temperature profiles for improving efficiency and lowering emissions. 5. Smart parts with embedded sensors for in situ monitoring of multiple parameters in existing and new facilities. 6. Optimizing advanced 3D manufacturing processes for embedded sensors in components for harsh environments to reduce costs and improve efficiency of power generation facilities with carbon capture capabilities. 7. New energy-harvesting materials for powering wireless sensors in harsh environments, improving reliability of wireless sensors in demanding environments, and in-situ monitoring and performance of devices and systems. 8. Real-time, accurate and reliable monitoring of temperature at distributed locations of sensors in harsh environments for improving operations and reducing operating costs. 9. Algorithms and methodologies for designing control systems utilizing distributed intelligence for optimal control of power generation facilities. 10. Gas sensors for monitoring high temperatures in harsh environments for lowering operating costs and better control of operations. 11. Optimizing placement of smart sensors in networks for cognitive behavior and self-learning. This paper provides an overview of the initiatives in smart sensor technologies and their applications in optimizing the performance of power generating facilities.

scholarly journals In-Situ Analysis of Essential Fragrant Oils Using a Portable Mass Spectrometer

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Fred P. M. Jjunju ◽  
Stamatios Giannoukos ◽  
Alan Marshall ◽  
Stephen Taylor
Keyword(s):  
Mass Spectrometer ◽  
Direct Analysis ◽  
Ambient Air ◽  
In Situ Analysis ◽  
Gas Chromatography Mass Spectrometry ◽  
Standard Samples ◽  
Active Compounds ◽  
Portable Mass Spectrometer ◽  
Methyl Butanoate

A portable mass spectrometer was coupled to a direct inlet membrane (DIM) probe and applied to the direct analysis of active fragrant compounds (3-methylbutyl acetate, 2-methyl-3-furanthiol, methyl butanoate, and ethyl methyl sulfide) in real time. These fragrant active compounds are commonly used in the formulation of flavours and fragrances. Results obtained show that the portable mass spectrometer with a direct membrane inlet can be used to detect traces of the active fragrant compounds in complex mixtures such as essential fragrant oils and this represents a novel in-situ analysis methodology. Limits of detection (LOD) in the sub-ppb range (< 2.5 pg) are demonstrated. Standard samples in the gaseous phase presented very good linearity with RSD % at 5 to 7 for the selected active fragrant compounds (i.e., isoamyl acetate, 2-methyl-3-furanthiol, methyl butanoate, and methyl ethyl sulphide). The rise and fall times of the DIM probe are in the ranges from 15 to 31 seconds and 23 to 41 seconds, respectively, for the standard model compounds analysed. The identities of the fragrance active compounds in essential oil samples (i.e., banana, tangerine, papaya, and blueberry muffin) were first identified by comparison with a standard fragrance compounds mixture using their major fragment peaks, the NIST standard reference library, and gas chromatography mass spectrometry (GC-MS) analysis. No sample preparation is required for analysis using a portable mass spectrometer coupled to a DIM probe, so the cycle time from ambient air sampling to the acquisition of the results is at least 65 seconds.

In Situ Analysis of Organic Material with a Portable Mass Spectrometer

2012 ◽  
Author(s):  
S. Soparawalla ◽  
J. Duncan ◽  
A. M. Fisher ◽  
I. Kanik ◽  
L. W. Beegle
Keyword(s):  
Mass Spectrometer ◽  
Organic Material ◽  
In Situ Analysis ◽  
Portable Mass Spectrometer
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