Table 3.

The prediction results of melamine levels in 10 different batches of milk powder samples by SANAS using the raw and D2 spectra.

Melamine level (w/w, %)	Raw spectra		D2 spectra
	RSDa (%)	RMSEPb	RSD (%)	RMSEP
0	—	0.0019	—	0.0014
0.01	19.5	0.0019	17.3	0.0016
0.02	9.8	0.0019	9.2	0.0017
0.04	4.8	0.0018	3.1	0.0012
0.08	3.8	0.0029	2.6	0.0020
0.12	1.3	0.0014	1.2	0.0014

^aRSD: relative standard deviation.

^bRMSEP: root mean squared error of prediction.