Skip to main content

View full-text article in PMC

. 2012 Jun 15;17(6):7440–7450. doi: 10.3390/molecules17067440

Table 3.

Calibration results from MLR using wavelengths from water and pH absorbance bands.

	Acids
Wavelengths (nm)	Citric		Tartaric		Malic		Oxalic
	R²	RMSE	R²	RMSE	R²	RMSE	R²	RMSE
920, 975, 991	0.914	0.213	0.929	0.193	0.890	0.239	0.319	0.577
850, 975	0.924	0.198	0.902	0.224	0.880	0.248	0.452	0.511
850, 920, 975, 991	0.951	0.163	0.930	0.194	0.909	0.220	0.480	0.509
925, 990	0.909	0.217	0.946	0.166	0.880	0.250	0.217	0.612
900, 975, 990	0.918	0.209	0.925	0.199	0.945	0.170	0.378	0.551
925, 975, 990, 991, 993	0.919	0.212	0.957	0.153	0.887	0.249	0.561	0.473
700, 800, 900, 940, 975	0.927	0.201	0.929	0.197	0.961	0.145	0.673	0.408
700, 800, 900, 975	0.919	0.210	0.926	0.199	0.958	0.150	0.386	0.553
922, 975, 990, 993	0.920	0.209	0.938	0.183	0.883	0.250	0.420	0.538
700, 800, 900, 922, 975, 990, 993	0.928	0.204	0.948	0.172	0.969	0.133	0.465	0.535
755, 850, 975	0.931	0.192	0.907	0.220	0.880	0.250	0.869	0.253
918, 920, 975, 996	0.920	0.208	0.922	0.204	0.897	0.234	0.770	0.339
755, 850, 918, 920, 975, 996	0.945	0.177	0.923	0.208	0.917	0.215	0.908	0.219