TY - T1 - Optical techniques for breath analysis : from single to multi-species detection SN - / UR - http://hdl.handle.net/10138/307287 T3 - A1 - Metsälä, M. A2 - PB - Y1 - 2018 LA - eng AB - Optical spectroscopy can be used for trace-level gas analysis in different applications, including exhaled breath research. A common approach is the targeted on-line, real-time analysis of small molecules (two to five atoms). Currently, the methodology is normally used for the detection of single analytes at trace levels, or two to three species at most at the same time. The main limitation preventing sensitive multi-species detection has been the limited fast scanning range of the lasers used a... VO - IS - SP - OP - KW - breath analysis; laser spectroscopy; optical frequency comb; optical spectroscopy; FREQUENCY COMBS; NITRIC-OXIDE; SPECTROSCOPY; 116 Chemical sciences; 114 Physical sciences N1 - PP - ER -