Exercise (1-1) Click here

　　Standard sample   　    　Adjusted concentration　                  　Measurement results　

①　blank　　　　　 （NO₃^- concentration = 0）                          →　peak height =    105

②　Standard sample（NO₃^- concentration = 0.005 mg L^-1）      →　peak height =    610

③　Standard sample（NO₃^- concentration = 0.01 mg L^-1）        →　peak height =   1031

④　Standard sample（NO₃^- concentration = 0.05 mg L^-1）        →　peak height =  5203

⑤　Standard sample（NO₃^- concentration = 0.5 mg L^-1）        →　peak height =  52682

Calculate the concentrations of the following unknown samples.

unknown sample１）　721

unknown sample２）　472638

unknown sample３）　32046

unknown sample４）　8245

Calculate the regression line of the calibration curve and the concentration calculation of the unknown sample on an Excel sheet.