. Author manuscript; available in PMC: 2013 Dec 9.

Published in final edited form as: Biogeosciences. 2010 May 6;7(5):10.5194/bg-7-1413-2010, 2010. doi: 10.5194/bg-7-1413-2010

Table 1.

List of the measured masses/compounds with typical sensitivities, dwell times (t_dwell) and the time-frame in which they were measured.

m/z	likely compounds	typical sensitivity	t _dwell	time-frame
32	$O_{2}^{+}$	—	0.1 s	full growing season
37	water cluster	–	0.1 s	10 July 2008–6 November 2008
33	methanol^*	11.4ncps/ppbv¹	0.5s	full growing season
45	acetaldehyde^*	16.8 ncps/ppbv¹	0.2 s	full growing season
59	acetone^*	16.4 ncps/ppbv¹	0.2 s	full growing season
99	hexenal	3.7 ncps/ppbv²	0.2s	full growing season
81	monoterpene (frag.)^*, hexenal (frag.)	2.8 ncps/ppbv¹	0.2s	full growing season
57	hexenal (frag.)	–	0.2 s	full growing season
137	monoterpenes^*	1.2 ncps/ppbv¹	0.2s	full growing season
143	hexenyl acetate	–	0.1 s	23 May 2008–6 November 2008
101	hexenol, hexanal	–	0.1 s	23 May 2008–6 November 2008
83	hexenol, hexanal (frag.) hexenyl acetate (frag.)	–	0.1 s	23 May 2008–6 November 2008
85	pentenone	-	0.1 s	23 May 2008–6 November 2008
87	pentenol, MBO, MBA	-	0.1 s	23 May 2008–6 November 2008
69	isoprene^* MBO, MBA (frag.) pentenol (frag.)	6.8 ncps/ppbv¹	0.1 s	23 May 2008–6 November 2008

Compound used for gas calibration.

Typical value for the sensitivity was obtained during a gas calibration before the second hay harvest at 8 August 2009.

Sensitivity was calculated based on the sensitivity of acetone taking into account the transmission of the instrument and a fragmentation pattern recorded by Fall et al. (1999).