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. 2008 Sep 18;8(9):5775–5791. doi: 10.3390/s8095775

Table 1.

The calibration curves of the biosensor with and without immobilized Fe3O4 nanoparticles in the presence of various concentrations of AA2P.

Amount of Fe3O4(wt %) Slope (nA mM−1) Intercept Correlation coefficient, R2 Linear range AA2P(μM)
0 0.606±0.058 6.95±2.58 0.9733 5 - 80
0.4 0.867±0.036 12.86±2.50 0.9915 5 - 120
2.2 0.742±0.024 10.51±2.06 0.9935 5 – 150