Research Article

Detection, Risk Assessment, and Survey of Four Polycyclic Aromatic Hydrocarbon Markers in Infant Formula Powder

Table 2

Recovery of internal standard during the extraction, saponification, purification, and the whole processes.

ChemicalsExtraction (%)Saponification (%)Purification (%)The whole process (%)

D12-BaA93.595.295.785.2
D12-CHR92.593.494.681.7
D12-BbFA91.692.789.375.8
D12-BaP91.492.388.974.6