Polycyclic aromatic hydrocarbons (PAHs) and dioxin compounds remaining in canine lungs were measured with an alkaline decomposition method employing KOH/ethanol. PAHs extracted from the lungs of 31 dogs were between 0.07 and 0.47 ng/wet-g (mean: 0.19 ng/wet-g) for BaA; 0.03 and 0.16 ng/wet-g (mean: 0.08 ng/wet-g) for BkF; 0.05 and 0.29 ng/wet-g (mean: 0.13 ng/wet-g) for BaP; and 0.05 and 0.35 ng/wet-g (mean: 0.17 ng/wet-g) for BghiP. Dioxin concentrations were between 0.047 and 0.870 pg-TEQ/wet-g (mean: 0.179 pg-TEQ/wet-g). There were big differences between the PAH concentrations and dioxin concentrations in the canine lungs. Strong relationships were observed between individual PAHs (r = 0.73–0.95). In this study, we detected PAHs and dioxins in all samples, confirming that canine lungs were contaminated by those pollutants.
Notes
*p < 0.05,
** p < 0.01.