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Issue 19, 2016
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A hand-portable digital linear ion trap mass spectrometer

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Abstract

A hand-portable digital linear ion trap mass spectrometer (DLIT-MS) has been developed for VOC analysis. It has a weight of 18 kg with dimensions of 49 cm × 39 cm × 16 cm, and consumes an average power of ca. 60 W. As a result of the introduction of a digital waveform, the DLIT-MS can be driven at a lower voltage (±100 V) to cover a mass range of 30–300 Th with a unit resolution. Compact electronics has been designed to control the DLIT-MS and record mass spectra. The mass drift was reduced after the improvement in electronics to stabilize the digital waveform voltage during the mass scan. Tandem mass spectrometry (MS) has been achieved by using digital asymmetric waveform isolation (DAWI), forward and reverse scan, and collision induced dissociation (CID). The isolation and CID efficiency for methyl salicylate were 83.9% and 81.3%, respectively. A novel buffer gas inlet system was designed to enhance the sensitivity and allow easy and safe use of the instrument. Limits of detection below 1 ppbv were obtained for several mixed gaseous samples.

Graphical abstract: A hand-portable digital linear ion trap mass spectrometer

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Supplementary files

Article information


Submitted
15 maí 2016
Accepted
29 jún. 2016
First published
29 jún. 2016

Analyst, 2016,141, 5535-5542
Article type
Paper

A hand-portable digital linear ion trap mass spectrometer

B. Xue, L. Sun, Z. Huang, W. Gao, R. Fan, P. Cheng, L. Ding, L. Ma and Z. Zhou, Analyst, 2016, 141, 5535
DOI: 10.1039/C6AN01118G

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