Detection of Melamine in Soybean Meal Using Near-Infrared Microscopy Imaging with Pure Component Spectra as the Evaluation Criteria

Figure 6

The -GH diagram of Set C. (a), (b), and (c) represent 1000, 500, and 100 mg kg⁻¹ of melamine images, while (d), (e), (f), and (g) represent four 50 mg kg⁻¹ of melamine images.

(a)

(b)

(c)

(d)

(e)

(f)

(g)