^pKey;
Laboratory;
of;
Environmental;
Geochemistry,;
Institute;
of;
Geochemistry,;
Chinese;
Academy;
of;
Sciences,Guiyang;
550002,;
China.;
^pEnvironmental;
Prowction;
Key;
Laboratory;
for;
Lake;
Pollution;
Control,;
Research;
Center;
of;
Lake;
Eco-Environment,Chinese;
Research;
Academy;
of;
Environmental;
Sciences,;
Beijing;
100012,;
China;
中国西南地区; 多环芳烃; 沉积记录; 洱海; 苯并(a)芘; 美国环境保护局; 超高分子量; PAHs;