EMAIL THIS PAGE TO A FRIEND

Talanta

Determination of microcystin-LR in water by a label-free aptamer based electrochemical impedance biosensor.


PMID 23200401

Abstract

In this study, an electrochemical impedance biosensor for cyanobacterial toxin microcystin-LR (MC-LR) detection has been developed. MC-LR aptamers were immobilized on the gold electrode through Au-S interaction, in the presence of target (MC-LR); the binding of MC-LR and aptamers probe led to a complex formation change on the electrode surface and resulted in the impedance decreasing. The decrease rate had a linear relationship with logarithm of the MC-LR concentration in the range of 1.0 × 10(-7)-5.0 × 10(-11)mol/L, with a detection limit of 1.8 × 10(-11)mol/L. The sensor has good selectivity and stability, it has been applied to detect MC-LR in three kinds of real water samples with satisfying results.

Related Materials

Product #

Image

Description

Molecular Formula

Add to Cart

33893
Microcystin-LR solution, 10 μg/mL in methanol, analytical standard
C49H74N10O12