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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