Simultaneous atmospheric CO, N2O and H2O detection using a single quantum cascade laser sensor based on dual-spectroscopy techniques
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- 作者：Jingsong Lia ; jingsong_li@ahu.edu.cn" class="auth_mail" title="E-mail the corresponding authorAuthor Vitae ; Hao DengaAuthor Vitae ; Juan SunaAuthor Vitae ; Benli YuaAuthor Vitae ; Horst FischerbAuthor Vitae
- 关键词：QCL ; Carbon monoxide ; Nitrous oxide ; Water vapor ; DAS ; WMS
- 刊名：Sensors & Actuators: B. Chemical
- 出版年：2016
- 出版时间：August 2016
- 年：2016
- 卷：231
- 期：Complete
- 页码：723-732
- 全文大小：5599 K
文摘
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QCLs are promising spectroscopic sources for developing analytical instrumentation.
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WMS is a sensitive spectroscopy technique for gas sensing.
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A versatile QCL sensor based on dual spectroscopic techniques was developed for simultaneous measurement of multi-species.
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Measurement precisions of 0.21 ppb for CO, 0.18 ppb for N2O and 5.65 ppm for H2O were achieved at the optimal averaging time of 75 s.