Question

1) Linearity

Use the data below to assess the linearity of each of the techniques. This will involve the construction of a fully labelled calibration graph for each technique. Supply the graph(s) that you think are necessary to demonstrate the last concentration where the graph is linear. Clearly explain how you reached the decision and explain which technique you would select on linearity and why

ICP-OES		ICP-MS
Concentration µg/ml	Signal/ cts	Concentration µg/ml	Signal/ cts
0	2	0	24
0.01	12	0.01	233
0.1	120	0.1	2256
1	1267	1	25628
10	23494	10	222856
100	245012	100	2750860
1000	2025615	1000	23306490
10000	11222839	10000	255943660
100000	200562823	100000	2267108920
1000000	349382716	1000000	11773911990

Answer 1

Here i have attached two separate calibration plot for both the techniques

1. I have plotted concentration in x axis aand signal in Y axis.

2. from that plot im concluding that ICP-MS plot has good linearity with respect to R²=0.991 graph results in y=mx+c linear equation.m (slope) gives sensitivity is nothing ablity to detect signal (sensitivity=11743 ug/ml)

3.from that plot ICP-OES plot has also good linearity but not as ICP-MS m (slope) gives sensitivity is nothing ablity to detect signal (sensitivity=346.1 ug/ml)