Detection of polycyclic aromatic hydrocarbons PAHs main (PAHs) are a class of hydrocarbons from the main two or more benzene to form a bond with each other, including more than 150 compounds, naphthalene, anthracene, phenanthrene, pyrene, currently identified PAHs common 16 kinds of similar substances include: a naphthalene; 2 benzo (a) anthracene; 3 acenaphthene; 4. flexor; 5 acenaphthene; 6 benzo (b) fluoranthene; 7 fluorene...... ; 8 benzo (k) fluoranthene; 9. Philippines; 10 Benzo (a) pyrene;. 11 anthracene; 12 indeno (1,2,3-cd) pyrene; 13 fluoranthene; 14 dibenzo (a, h) anthracene; 15 pyrene. ; 16 Benzo (g, h, i) perylene; HST as 17025, can according to the standard GB / T 29784.2-2013 or EPA 8270D:. 2007 on a variety of organic materials for efficient and accurate PAHs detect