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Table 1 Concentrations (ppm) of highly volatile compounds detected in the mainstream bidi smoke by FTIR spectrometry at different sampling flowrates

From: Analysis of chemical constituents in mainstream bidi smoke

Compound Flowrate (L/min)
0.56 0.96 1.25 1.54
Carbon monoxide 4630 ± 604 3910 ± 907 2460 ± 633 2310 ± 570
Carbon dioxide 56,970 ± 7635 38,360 ± 4671 28,240 ± 5654 30,340 ± 840
Methanol 5140 ± 62 3330 ± 11,070 2490 ± 296 2860 ± 184
Methane 1930 ± 176 1360 ± 288 981 ± 73 980 ± 122
Ethylene 549 ± 99 585 ± 112 254 ± 36 234 ± 61
Ethane 1186 ± 73 680 ± 135 640 ± 222 498 ± 153
  1. The data are reported as “mean ± 1 standard deviation” based on triplicate measurements