NIU Si-peng, FENG Ya-juan, LUO Lei, et al. Pt/Ni-graphene oxide-modified electrode for determination of ractopamine[J]. 2013, 32(2): 135-137+141. DOI: 10.13873/j.1000-97872013.02.031.
An electrochemical sensor is prepared for the quantitative determination of ractopamine using graphene oxide as matrix material to modify glass carbon electrode and deposit Pt/Ni binary alloy on the surface of modified electrode.The effects of alloy depositing time and sample accumulation time on the response of this sensor are investigated.Under optimal condition
the concentration linear range of 1.98×10-7
2
.67×10-4mol/L
and the detecting limitation of detected ractopamine is 6.66×10-8mol/L.Experimental results show that the sensor has high sensitivity and good stability.
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