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. Author manuscript; available in PMC: 2021 Nov 10.
Published in final edited form as: J Chem Educ. 2020 Oct 26;97(11):3976–3983. doi: 10.1021/acs.jchemed.0c00904

Figure 2. Falsified Sample of Acetaminophen.

Figure 2.

A) Left PAD is the suspicious sample that did not turn Lane K brown (red circle) as shown in the PAD on the right (yellow circle). Both PADs detected starch (blue circles). B) Extracted dye in chloroform from the suspicious sample with an insert of Sunset Yellow FCF used to confirm the identity. C) Left XPS spectra show the comparison of the suspicious sample to talc and the right show the detection of aluminum oxide and starch.