pH 4.4	Conc. of VA (uM)	Recorded absorbance at 562nm (3 trials)	Recorded absorbance at 562nm (3 trials)	Recorded absorbance at 562nm (3 trials)	Corresponded Fe (II) (uM)	Corresponded Fe (II) (uM)	Corresponded Fe (II) (uM)	Average Fe (II) 	Standard deviation	
pH 4.4	2	0.034	0.034	0.034	=(C3-0.004)/0.0279	=(D3-0.004)/0.0279	=(E3-0.004)/0.0279	=AVERAGE(F3:H3)	=STDEV(F3:H3)	
pH 4.4	5	0.146	0.134	0.157	=(C4-0.004)/0.0279	=(D4-0.004)/0.0279	=(E4-0.004)/0.0279	=AVERAGE(F4:H4)	=STDEV(F4:H4)	
pH 4.4	15	0.333	0.345	0.356	=(C5-0.004)/0.0279	=(D5-0.004)/0.0279	=(E5-0.004)/0.0279	=AVERAGE(F5:H5)	=STDEV(F5:H5)	
pH 4.4	30	0.567	0.588	0.606	=(C6-0.004)/0.0279	=(D6-0.004)/0.0279	=(E6-0.004)/0.0279	=AVERAGE(F6:H6)	=STDEV(F6:H6)	
pH 4.4	90	0.826	0.843	0.854	=(C7-0.004)/0.0279	=(D7-0.004)/0.0279	=(E7-0.004)/0.0279	=AVERAGE(F7:H7)	=STDEV(F7:H7)	
										
pH 2.2	Conc. of VA (uM)	Recorded absorbance at 562nm (3 trials)	Recorded absorbance at 562nm (3 trials)	Recorded absorbance at 562nm (3 trials)	Corresponded Fe (II) (uM)	Corresponded Fe (II) (uM)	Corresponded Fe (II) (uM)	Average Fe (II) 	Standard deviation	
pH 2.2	2	0.007	0.005	0.007	=(C10-0.004)/0.0279	=(D10-0.004)/0.0279	=(E10-0.004)/0.0279	=AVERAGE(F10:H10)	=STDEV(F10:H10)	
pH 2.2	5	0.076	0.072	0.08	=(C11-0.004)/0.0279	=(D11-0.004)/0.0279	=(E11-0.004)/0.0279	=AVERAGE(F11:H11)	=STDEV(F11:H11)	
pH 2.2	15	0.24	0.235	0.249	=(C12-0.004)/0.0279	=(D12-0.004)/0.0279	=(E12-0.004)/0.0279	=AVERAGE(F12:H12)	=STDEV(F12:H12)	
pH 2.2	30	0.283	0.266	0.301	=(C13-0.004)/0.0279	=(D13-0.004)/0.0279	=(E13-0.004)/0.0279	=AVERAGE(F13:H13)	=STDEV(F13:H13)	
pH 2.2	90	0.43	0.452	0.408	=(C14-0.004)/0.0279	=(D14-0.004)/0.0279	=(E14-0.004)/0.0279	=AVERAGE(F14:H14)	=STDEV(F14:H14)