Microwave-Assisted Digestion Using Dilute Nitric Acid and Hydrogen Peroxide for Multielement Determination in Wheat Flour by ICP-MS

Table 2

Experiments and multiple response (MR) parameters from full factorial design 2⁴.

Experiment no	Volume of mixture	Temperature (°C)	Time (min)	Amount of sample	MR
1	8	200	15	0.3	6.44791
2	8	200	20	0.3	6.12712
3	8	200	15	0.5	7.57222
4	8	200	20	0.5	6.14336
5	12	200	15	0.3	6.69651
6	12	200	20	0.3	6.51015
7	12	200	15	0.5	6.91626
8	12	200	20	0.5	5.71776
9	8	210	15	0.3	8.36120
10	8	210	20	0.3	7.18961
11	8	210	15	0.5	6.31110
12	8	210	20	0.5	7.06297
13	12	210	15	0.3	8.24488
14	12	210	20	0.3	7.28224
15	12	210	15	0.5	9.72882
16	12	210	20	0.5	7.79609