Abstract
We report a new portable chemical warfare agent analyzer for miniaturized gas chromatography (mini-GC), comprising a packed column and hydrothermally synthesized Al-doped ZnO quantum dots (AZO QDs). This device uses a small volume of the target gas (1 ml) without pre-concentration and can be used to detect 2-chloroethyl ethyl sulfide (2-CEES) gas, which is a mustard gas simulant, over a wide concentration range. The AZO QD (˜5 nm) sensor exhibited an outstanding sensing response (R) of 5,393 in detecting 20 ppm of 2-CEES; this performance is superior to those of other previously reported 2-CEES sensors based on semiconducting metal oxides. By optimizing the length of the packed column, we successfully decreased the retention time of 2-CEES to ˜150 s. More importantly, the manufactured mini-GC device can be used to selectively detect a small amount of target gas from other gases such as NH3, NO, and CO. We demonstrated the excellent detection performance of the device for the real-time selective detection of 2-CEES.
| Original language | English |
|---|---|
| Pages (from-to) | 444-450 |
| Number of pages | 7 |
| Journal | Sensors and Actuators, B: Chemical |
| Volume | 284 |
| DOIs | |
| Publication status | Published - 2019 Apr 1 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Instrumentation
- Condensed Matter Physics
- Surfaces, Coatings and Films
- Metals and Alloys
- Electrical and Electronic Engineering
- Materials Chemistry
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Real-time selective detection of 2-chloroethyl ethyl sulfide (2-CEES) using an Al-doped ZnO quantum dot sensor coupled with a packed column for gas chromatography. / Lee, Jun Ho; Jung, Hwaebong; Yoo, Ran; Park, Yunji; Lee, Hyun sook; Choe, Yong Sahm; Lee, Wooyoung.
In: Sensors and Actuators, B: Chemical, Vol. 284, 01.04.2019, p. 444-450.Research output: Contribution to journal › Article
TY - JOUR
T1 - Real-time selective detection of 2-chloroethyl ethyl sulfide (2-CEES) using an Al-doped ZnO quantum dot sensor coupled with a packed column for gas chromatography
AU - Lee, Jun Ho
AU - Jung, Hwaebong
AU - Yoo, Ran
AU - Park, Yunji
AU - Lee, Hyun sook
AU - Choe, Yong Sahm
AU - Lee, Wooyoung
PY - 2019/4/1
Y1 - 2019/4/1
N2 - We report a new portable chemical warfare agent analyzer for miniaturized gas chromatography (mini-GC), comprising a packed column and hydrothermally synthesized Al-doped ZnO quantum dots (AZO QDs). This device uses a small volume of the target gas (1 ml) without pre-concentration and can be used to detect 2-chloroethyl ethyl sulfide (2-CEES) gas, which is a mustard gas simulant, over a wide concentration range. The AZO QD (˜5 nm) sensor exhibited an outstanding sensing response (R) of 5,393 in detecting 20 ppm of 2-CEES; this performance is superior to those of other previously reported 2-CEES sensors based on semiconducting metal oxides. By optimizing the length of the packed column, we successfully decreased the retention time of 2-CEES to ˜150 s. More importantly, the manufactured mini-GC device can be used to selectively detect a small amount of target gas from other gases such as NH3, NO, and CO. We demonstrated the excellent detection performance of the device for the real-time selective detection of 2-CEES.
AB - We report a new portable chemical warfare agent analyzer for miniaturized gas chromatography (mini-GC), comprising a packed column and hydrothermally synthesized Al-doped ZnO quantum dots (AZO QDs). This device uses a small volume of the target gas (1 ml) without pre-concentration and can be used to detect 2-chloroethyl ethyl sulfide (2-CEES) gas, which is a mustard gas simulant, over a wide concentration range. The AZO QD (˜5 nm) sensor exhibited an outstanding sensing response (R) of 5,393 in detecting 20 ppm of 2-CEES; this performance is superior to those of other previously reported 2-CEES sensors based on semiconducting metal oxides. By optimizing the length of the packed column, we successfully decreased the retention time of 2-CEES to ˜150 s. More importantly, the manufactured mini-GC device can be used to selectively detect a small amount of target gas from other gases such as NH3, NO, and CO. We demonstrated the excellent detection performance of the device for the real-time selective detection of 2-CEES.
UR - http://www.scopus.com/inward/record.url?scp=85059465561&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85059465561&partnerID=8YFLogxK
U2 - 10.1016/j.snb.2018.12.144
DO - 10.1016/j.snb.2018.12.144
M3 - Article
AN - SCOPUS:85059465561
VL - 284
SP - 444
EP - 450
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
SN - 0925-4005
ER -