Research Article

An Amperometric Biosensor Based on Alanine Dehydrogenase for the Determination of Low Level of Ammonium Ion in Water

Figure 14

The result on the shelf life study of the AlaDH electrode tested in solution containing 1.53 mg/L ion, 0.25 mM NADH and 0.01 mM pyruvate at pH 7 over a period of 11 days ( ).
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