Table 1

Comparison of operational characteristics of biosensors created using different types of urease immobilization
Type of immobilization Noise (μA) Drift of base line (μA/min) Detection limit (mM) RSd of reproducibility of signal (%) RSd of inter-reproducibility of immobilization (%) Linear range (mM)
In GA vapour 0.02 0.010 0.0015 8.5 27.4 0 to 0.5
On the surface of silicalite monolayer 0.03 0.028 0.0015 4.7 10.5 0 to 1.5
On the surface of nano beta zeolite monolayer 0.03 0.001 0.0015 3.4 17.8 0 to 1.0
On the surface of zeolite L monolayer 0.06 0.004 0.0050 4.5 15.4 0 to 1.5
On the surface of calcinated nano beta zeolite monolayer 0.09 0.013 0.0055 4.7 14.3 0 to 1.0

Shelyakina et al.

Shelyakina et al. Nanoscale Research Letters 2014 9:124   doi:10.1186/1556-276X-9-124

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