scholarly journals Capillary Sensor for Detection of Amphetamine Precursors in Sewage Water

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1846
Author(s):  
Monika Wiśnik-Sawka ◽  
Mirosław Maziejuk ◽  
Wojciech Fabianowski ◽  
Urszula Karpińska ◽  
Maciej Szwast ◽  
...  
Keyword(s):  
Ion Mobility Spectrometry ◽  
Ion Mobility ◽  
Methyl Ketone ◽  
Sewage Water ◽  
New Method ◽  
Municipal Sewage ◽  
High Solubility ◽  
Sewage System ◽  
Online Measurements

This paper deals with the problem of detecting benzyl methyl ketone (BMK), which is a precursor of amphetamine that can be synthesized in home labs. The focus of our work was to identify an improvement for the analysis of sewage introduced into the municipal sewage system. The sensors used to detect BKM in these systems are often clogged and therefore cannot function properly. In this article, a new method of detecting BMK and other chemicals in wastewater is presented. A system containing capillary polypropylene, hydrophobized with polysiloxane coating fibers was prepared. These solutions were used for continuous online measurements by ion mobility spectrometry. The use of pipes with a polysiloxane coating reduces the permeation of water and significantly increases the BMK permeation due to its high solubility in the polymer.

ION MOBILITY SPECTROMETRY: A NEW METHOD FOR THE DETECTION OF LUNG CANCER AND AIRWAY INFECTION IN EXHALED AIR? FIRST RESULTS OF A PILOT STUDY

CHEST Journal ◽  
2005 ◽  
Vol 128 (4) ◽  
pp. 155S ◽  
Author(s):  
Michael Westhoff ◽  
Patrick Litterst ◽  
Lutz Freitag ◽  
Vera Ruzsanyi ◽  
Sabine Bader ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Pilot Study ◽  
Ion Mobility Spectrometry ◽  
Ion Mobility ◽  
New Method ◽  
Airway Infection ◽  
Exhaled Air ◽  
First Results

scholarly journals Hybrid Analytical Platform Based on Field-Asymmetric Ion Mobility Spectrometry, Infrared Sensing, and Luminescence-Based Oxygen Sensing for Exhaled Breath Analysis

Sensors ◽  
2019 ◽  
Vol 19 (12) ◽  
pp. 2653
Author(s):  
L. Tamina Hagemann ◽  
Stefan Repp ◽  
Boris Mizaikoff
Keyword(s):  
Ion Mobility Spectrometry ◽  
Ion Mobility ◽  
Small Animal ◽  
Breath Analysis ◽  
Prototype System ◽  
Exhaled Breath ◽  
Analytical Technique ◽  
Exhaled Breath Analysis ◽  
Wide Range ◽  
Online Measurements

The reliable online analysis of volatile compounds in exhaled breath remains a challenge, as a plethora of molecules occur in different concentration ranges (i.e., ppt to %) and need to be detected against an extremely complex background matrix. Although this complexity is commonly addressed by hyphenating a specific analytical technique with appropriate preconcentration and/or preseparation strategies prior to detection, we herein propose the combination of three different detector types based on truly orthogonal measurement principles as an alternative solution: Field-asymmetric ion mobility spectrometry (FAIMS), Fourier-transform infrared (FTIR) spectroscopy-based sensors utilizing substrate-integrated hollow waveguides (iHWG), and luminescence sensing (LS). By carefully aligning the experimental needs and measurement protocols of all three methods, they were successfully integrated into a single compact analytical platform suitable for online measurements. The analytical performance of this prototype system was tested via artificial breath samples containing nitrogen (N2), oxygen (O2), carbon dioxide (CO2), and acetone as a model volatile organic compound (VOC) commonly present in breath. All three target analytes could be detected within their respectively breath-relevant concentration range, i.e., CO2 and O2 at 3-5 % and at ~19.6 %, respectively, while acetone could be detected with LOQs as low as 165-405 ppt. Orthogonality of the three methods operating in concert was clearly proven, which is essential to cover a possibly wide range of detectable analytes. Finally, the remaining challenges toward the implementation of the developed hybrid FAIMS-FTIR-LS system for exhaled breath analysis for metabolic studies in small animal intensive care units are discussed.

Fast and sensitive determination of sulfur dioxide in herbal medicines by microchip-based field asymmetric-wave ion mobility spectrometry

2015 ◽  
Vol 7 (3) ◽  
pp. 1036-1045 ◽  
Author(s):  
Xiaozhi Wang ◽  
Weijun Zhao ◽  
Lingfeng Li ◽  
Xiangyang Wang ◽  
Peng Li ◽  
...  
Keyword(s):  
Sulfur Dioxide ◽  
Ion Mobility Spectrometry ◽  
Ion Mobility ◽  
Herbal Medicines ◽  
Direct Determination ◽  
New Method ◽  
Sensitive Determination ◽  
Fast Field ◽  
Asymmetric Wave

This paper reports a new method for the direct determination of SO2in HMs using fast field asymmetric-wave ion mobility spectrometry (FAIMS) coupled with a headspace air bubbling method.

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