Optical Cavity Fibre Sensor for Detection of Microcystin-LR in Water

• Type: Article in International Conference Proceedings Book
• Date: 2010

Authors

Queiros, RB (Author) Other; Susana Silva (Author) FCUP; Sales, MGF (Author) Other; Noronha, JP (Author) Other; Frazao, O (Author) FCUP; Jorge, PAS (Author) FCUP; Aguilar, GG (Author) Other

Conference proceedings International

Title: FOURTH EUROPEAN WORKSHOP ON OPTICAL FIBRE SENSORS

Fourth European Workshop on Optical Fibre Sensors

Porto, PORTUGAL, SEP 08-10, 2010

Indexing

ISI Web of Knowledge - 4 Citations

Scopus - 6 Citations

Other information

Authenticus ID: P-003-AZS

DOI: 10.1117/12.865004

Abstract (EN): The deterioration of water quality by Cyanobacteria causes outbreaks and epidemics associated with harmful diseases in Humans and animals because of the released toxins. Microcystin-LR (mcyst) is one of the most widely studied hepatotoxin and World Health Organization recommends a maximum value of 1 mu g L-1 of mcyst in drinking-water. Therefore, there is a great demand for remote, real-time sensing techniques to detect and quantify the presence of mcyst. In this work a Fabry-Perot sensing probe based on a fibre tip coated with a mcyst sensitive thin film is presented. Highly specific recognition membranes, using sol-gel based Molecular Imprinted Polymers (MIPs), were developed to quantify microcystins in water, showing great potential in the analysis of this kind of samples. The fibre Fabry-Perot MIP sensor shows a linear response to mcyst concentration with a sensitivity of -13.2 +/- 0.4 nm L mu g(-1).

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4