Determination of Pesticide Residues in Cannabis Smoke

Table 3

Recovery of pesticides in smoke condensate.

Sample/residue	μg/gram plant	% Recovery
Water pipe with filters
Diazinon	589 ± 31.0	0.08
Paclobutrazol	420 ± 32.5	10.2
Bifenthrin	77 ± 34.5	9.00
Permethrin	685 ± 34.9	10.9
Cotton filter
Diazinon	190 ± 11.0	24.9
Paclobutrazol	109 ± 8.80	30.1
Bifenthrin	20.8 ± 9.16	26.6
Permethrin	134 ± 8.52	25.1
Carbon filter	N/A	N/A
Water pipe w/out filters
Diazinon	2930 ± 15.1	42.2
Paclobutrazol	2040 ± 11.3	49.5
Bifenthrin	389 ± 10.1	45.4
Permethrin	3760 ± 9.72	59.9
Glass pipe
Diazinon	4270 ± 12.3	61.5
Paclobutrazol	2789 ± 13.8	67.4
Bifenthrin	516 ± 12.8	60.3
Permethrin	4360 ± 9.70	69.5

Data presented as mean μg pesticide/gram plant material ± relative standard deviation. Sample size of 3 for all measurements.