a
b
TCI-二苯并[b,def]芘,98.0%(GC)
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![TCI-二苯并[b,def]芘,98.0%(GC)](http://forneeds.cn/public/images/1b/aa/d5/8002221258ef1795270a3037700e5552009ed883.gif?1510820613#w)
![TCI-二苯并[b,def]芘,98.0%(GC)](http://www.forneeds.cn/public/propic/tci/D1005.gif?1510820613#w)