PAHs.2.200PAHs1.8-13. .1.2.12 .3.4.12.1. PAHsPAHs 2. 3. 2. 1 26PAHs[a]721775PAHsIARCI 2.1.2 11. 2. 4003433. 22 4-72.PAHs200582PAHs 1 2 3(a)