Research Article
A Chemical Synthesis of Benzo[a]pyrene Hapten and Its Application in a Streptavidin-Horseradish Peroxidase-Based Enzyme-Linked Immunological Analysis
Figure 4
Locations of sampling sites in Shanghai, China. PM2.5 samples were collected at sampling sites , , and . Chongming Island; central area of Hongkou; Jinshan District. Agricultural soils were collected at sampling sites and (local vegetable bases).