Fabrication of Cr doped SnO 2 nanoparticles based biosensor for the selective determination of riboflavin in pharmaceuticals
Analyst, 2013•pubs.rsc.org
We report the fabrication and testing of a riboflavin (RF) biosensor based on the use of Cr
doped SnO2 nanoparticles. The Cr–SnO2 nanoparticles with chromium concentration from 0
to 5 wt% were synthesised by a microwave irradiation method. Magnetic studies revealed
that only 3 wt% Cr doped nano-SnO2 has ferromagnetic behaviour at room temperature.
This Cr–SnO2 nanoparticles modified electrode responded to RF linearly over a
concentration range of 0.2× 10− 6 to 1.0× 10− 4 M with a detection limit of 107 nM. The …
doped SnO2 nanoparticles. The Cr–SnO2 nanoparticles with chromium concentration from 0
to 5 wt% were synthesised by a microwave irradiation method. Magnetic studies revealed
that only 3 wt% Cr doped nano-SnO2 has ferromagnetic behaviour at room temperature.
This Cr–SnO2 nanoparticles modified electrode responded to RF linearly over a
concentration range of 0.2× 10− 6 to 1.0× 10− 4 M with a detection limit of 107 nM. The …
We report the fabrication and testing of a riboflavin (RF) biosensor based on the use of Cr doped SnO2 nanoparticles. The Cr–SnO2 nanoparticles with chromium concentration from 0 to 5 wt% were synthesised by a microwave irradiation method. Magnetic studies revealed that only 3 wt% Cr doped nano-SnO2 has ferromagnetic behaviour at room temperature. This Cr–SnO2 nanoparticles modified electrode responded to RF linearly over a concentration range of 0.2 × 10−6 to 1.0 × 10−4 M with a detection limit of 107 nM. The fabricated sensor showed an excellent anti-interference ability against electroactive species and metal ions and proved to be useful for the estimation of the RF content in pharmaceutical samples with satisfactory recovery.
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