Enhancing capabilities of aspiration-type Ion Mobility Spectrometer using a Pulsed Sampling System and a heated transfer line
| Autor: | Georgios C. Psarras, J. Vamvakari, R. McEntee, George Pallis, K. Mikedi, V. H. Moll, G.C. Koumoundouros, G. Statheropoulos, M. Statheropoulos |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Chromatography
Moisture Ion-mobility spectrometry 010401 analytical chemistry Metals and Alloys Transfer line Analytical chemistry Linearity Repeatability 010402 general chemistry Condensed Matter Physics 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Materials Chemistry Acetone Sensitivity (control systems) Electrical and Electronic Engineering Saturation (chemistry) Instrumentation |
| Zdroj: | Sensors and Actuators B: Chemical. 222:240-248 |
| ISSN: | 0925-4005 |
| DOI: | 10.1016/j.snb.2015.08.055 |
| Popis: | An aspiration-type Ion Mobility Spectrometer (IMS) was connected to an in-house developed Pulsed Sampling System (PSS) through a heated capillary column acting as transfer line, after being modified to a closed loop IMS device. Performance of the whole system was evaluated using acetone gas standards in the concentration range of 200–2000 ppb. Tests were carried out using an in-house developed chemical environment generator for producing acetone concentrations. The system presented long-term stability, linearity, sensitivity and low minimum detectable level; less than 286 ppb for acetone with a closed loop that circulates 1300 mL/min of purified air. Repeatability (RSD) was less than 15% for all concentrations. All data were produced in dry atmosphere inside the IMS; presence of moisture (e.g. when saturation of molecular sieves occurs) seems to severely reduce performance. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect