應(yīng)用 | 優(yōu)勢 |
? 檢測各種大氣痕量氣體，如:甲烷、*、一氧化氮、二氧化氮、一氧化碳、二氧化碳、甲醛、甲酸、乙烯、乙炔、羰基硫化物、、氨等。 | l 紅外激光痕量氣體監(jiān)視器與電子和光學(xué)器，十分緊湊，體積非常小 |
? N2O監(jiān)測儀：同時監(jiān)測N2O、水汽、CO、CO2或CH4。 | l 無需標(biāo)定氣體，檢測痕量氣體濃度 |
? CO2、CH4和N2O同位素監(jiān)測 | l 快速時間響應(yīng) |
? 焚燒監(jiān)測和表征 | l 不受其他大氣氣體或水蒸氣的干擾 |
? 源/降表征的同位素監(jiān)測 | l 總控設(shè)計，無人值守操作 |
? 對N2O和其他痕量氣體的渦流協(xié)方差測量。 | l 可以在野外和移動平臺上進(jìn)行監(jiān)測 |
? 快速響應(yīng)羽流的研究
? 呼吸分析
? 空氣質(zhì)量檢測
? 船舶、卡車和飛機(jī)平臺的移動測量 | l 光路長度達(dá)76米
l 數(shù)據(jù)采集率可達(dá)1到10赫茲(取決于具體的儀器和真空泵) |
主流儀器
采用中紅外激光可獲得更高的精度和精度
單激光痕量氣體監(jiān)測儀的規(guī)格：
尺寸：440 mm x 660 mm x 6U (267mm) (W x D x H) (core instrument)
重量：35 kg (core instrument)
供電：250 W, 120/240 V, 50/60 Hz (without pump)
文獻(xiàn)
Nelson, D.D. et al., Optics Let. 31, 2012-2014, 2006.
McManus, J.B. et al., Applied Physics B, DOI: 10.1007/s00340-006-2407-7 (2006).
McManus, J.B., M.S. Zahniser, D.D. Nelson, L.R. Williams, and C.E. Kolb, Infrared laser spectrometer with balanced absorption for measurements of isotopic ratios of carbon gases,, Spectrochim. Acta A, 58, 2465-2479, (2002).
McManus, J.B., D.D. Nelson, J.H. Shorter, R. Jiménez, S. Herndon, S. Saleska, and M.S. Zahniser, A high precision pulsed QCL spectrometer for measurements of stable isotopes of carbon dioxide, J. Modern Optics, 52, 2309-2321 (2005).
Saleska, SR; J. Shorter, S. Herndon, R. Jimenéz, B. McManus, D. Nelson, M. Zahniser, What are the instrumentation requirements for measuring the isotopic composition of net ecosystem exchange of CO2 using eddy covariance methods? Isotopes in Environmental and Health Studies, 42 (1), 117 (2006).
Nelson, D.D., J. B. McManus, S. C. Herndon, M. S. Zahniser, B. Tuzson and L. Emmenegger, New Method for Isotopic Ratio Measurements of Atmospheric Carbon Dioxide Using a 4.3 μm Pulsed Quantum Cascade Laser, Appl. Phys. B 90, 301–309 (2008).
Tuzson, B , J. Mohn, M. J. Zeeman, R. A. Werner, W. Eugster, M. S. Zahniser, D. D. Nelson,
J. B. McManus, L. Emmenegger, High precision and continuous field measurements of δ13C and
δ18O in carbon dioxide with a cryogen-free QCLAS, Appl. Phys. B 92, 451-458 (2008).
