. 2021 Dec 22;29(18):27051–27069. doi: 10.1007/s11356-021-18032-x

Table 2.

Summary of values found in the literature (Schaller et al. 2016; Eldridge et al. 2015; Bekki et al. 2017; Rudd et al. 2019) for gaseous and particulate matter emissions from 3R4F and IQOS. Uncertainties in the values are not shown

Ref	This study	Schaller	Eldridge	Bekki	Rudd	This study	Schaller	Bekki	Rudd
Product	3R4F					IQOS
	mg/cig	mg/cig	mg/cig	mg/cig	mg/cig	mg/stick	mg/stick	mg/stick	mg/stick
H₂O	70.9	13.3	15.9	10.1	-	92.9	39.4	33.1	-
CO	49.1	30.7	31.2	33.0	-	0.727	0.598	0.44	-
C₂H₄O	2.54	1.59	1.24	-	-	0.461	0.213	-	-
C₁₀H₁₄N₂	1.92	2.09	1.97	1.7	1.76	1.33	1.32	1.10	1.27
HCN	0.826	0.451	0.392	-	-	-	0.00378	-	-
NO	0.762	-	0.540	-	-	-	-	-	-
NOx	0.913	0.541	0.608	-	-	0.103	0.0226	-	-
TPM^a	31.4	33.0	28.2	26.8	-	7.38	14.7	10.9	-

^aTPM (total particulate matter), water is not included in the aerosol transport results