Table 1.

Chemical compounds emitted from primary sludge

1st RT/s	2nd RT/s	Name of compounds	Similaritya
270	1.46	2-Propenal	876
278	1.22	Methanethiol	881
286	2.19	Acetonitrile	966
286	1.74	Ethanol	939
290	1.38	2-Propanone	926
290	1.46	2-Propenal	875
290	1.32	Propanal	894
294	1.21	Ethanethiol	907
302	1.33	Dimethyl sulfide	919
310	2.31	1-Propanol	937
318	1.33	Diethyl disulfide	918
326	1.66	2-Butanone	946
330	1.55	Butanal	952
350	1.54	2-Ethylbutanal	970
370	1.66	Benzene	901
374	1.28	2-Hexanone	906
378	1.18	Pentanal	876
386	1.55	3-Ethyl-3-pentanol	939
446	2.16	Dimethyl disulfide	973
478	1.89	Toluene	933
478	2.98	Pyridine	968
506	2.00	2-Methyl-3-heptanol	876
510	2.02	Hexanal	897
566	2.26	Methyl ethyl disulfide	879
578	1.22	Butane	863
614	2.00	Ethylbenzene	940
626	2.04	1,4-Dimethylbenzene	960
650	2.20	2-Heptanone	972
658	2.15	Methyl propyl disulfide	916
666	2.16	Heptanal	902
666	2.20	1,2-Dimethylbenzene	895
694	1.26	Nonane	931
706	1.31	1-Decanol	854
750	1.24	Decane	878
754	1.42	α-Pinene	927
762	2.02	Benzaldehyde	966
766	1.91	2-Ethylhexanal	931
778	1.51	Camphene	874
794	3.65	Benzonitrile	937
822	1.28	3-Ethyloctane	885
826	2.24	2-Octanone	940
846	2.20	Octanal	943
858	1.19	Phenol	874
874	1.64	α-Phellandrene	870
894	2.39	1,3,5-Trimethylbenzene	934
918	1.68	Limonene	929
954	1.90	Acetophenone	937
970	1.72	α-Terpinene	910
978	2.09	1-Methyl-2-propylbenzene	963
1050	2.82	3-Pentanol	865
1234	3.88	Benzothiazole	897
1514	1.46	Acetic acid, decyl ester	921

^aSimilarity: average of similarity of the mass spectrum of identified compounds to the spectra of standard compounds in the NIST 2011 library