Table 3.
Heavy metals contents in drug samples
| Metals | Lead (μg/g) | Cadmium (μg/g) | Chromium (μg/g) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | SD | Max | Min | Mean | SD | Max | Min | Mean | SD | Max | Min | |
| Opium | 138.10 | 75.01 | 243.30 | 52.80 | 0.45 | 0.29 | 1.03 | 0.14 | 447.38 | 20.27 | 479.00 | 419.50 |
| Heroin | 48.85* | 13.43 | 82.60 | 36.60 | 0.59 | 0.26 | 1.04 | 0.25 | 413.70 | 14.68 | 432.00 | 378.00 |
| Crack | 30.83* | 16.26 | 58.80 | 13.30 | 0.60 | 0.23 | 0.96 | 0.29 | 420.2 | 13.01 | 439.50 | 403.50 |
Data are expressed as mean, standard deviation (SD), minimum (Min), maximum (Max) values and n = 10 for each drug. * p < 0.001; statistically significant difference from opium samples (One-way ANOVA with Tukey–Kramer HSD test)