Quantitative Evaluation of Acetaminophen in Oral Solutions by Dispersive Raman Spectroscopy for Quality Control

Table 4

RS/PLS and NIRS values used to calculate the concentrations of acetaminophen in six commercial medicines and the errors of each method.

Commercial medicines	Nominal value (mg/mL)	RS/PLS concentration (mg/mL)	Error RS/PLS (mg/mL)	NIRS concentration (mg/mL)	Error NIRS (mg/mL)
Med_1	200,0	201,3	0,7	202,0	1,0
Med_2	200,0	202,7	1,4	204,0	2,0
Med_3	200,0	199,0	0,5	207,4	3,7
Med_4	200,0	201,5	0,8	202,0	1,0
Med_5	200,0	201,4	0,7	204,0	2,0
Med_6	200,0	203,8	1,9	206,4	3,2