LPG AND TAPER BASED FIBER-OPTIC SENSOR FOR INDEX OF REFRACTION MEASUREMENTS IN BIOSENSOR APPLICATIONS.

Autor: Werneck, M. M., Allil, R. C., Rodrigues, D. M. C., Miguel, M. A., de Nazaré, F. V., Wandermur, G. L., da Silva-Neto, J. L., Pais, J. S., Rambauske, D. C.
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Zdroj: International Conference on POF Proceedings; 2011, p545-550, 6p
Abstrakt: Sulfate reducing bacteria (SRB) are anaerobes sustained by organic nutrients and represent a class of anaerobic microorganisms that obtain energy by sulfate reduction. Corrosion in internal surfaces of tanks and pipes occurs where biological matter settles or attaches to. Biologically produced chemicals such as ammonia, hydrogen sulfide and acids can increase general corrosion rates in a system corroding the iron in a rapid process, which, unlike ordinary rust, is not self-limiting. Generally speaking, cell detection is crucial in microbiological analysis of clinical, food, water or environmental samples. However, methods current employed are time consuming, taking at least 72 hours in order to produce reliable responses as they depend on sample collection and cell culture in controlled conditions. The delay in obtaining the results of the analysis can result in contamination of a great number of consumers or economic losses in the petroleum sector. Plastic Optical Fiber (POF) biosensors consist in a viable alternative for rapid and inexpensive scheme for cells detection. In order to study the sensitivity of these sensors for microbiological detection, fiber tapers and LPG both in PMMA and silica were studied as possible candidates to take part of an immuno-biosensor system to detect SRB in water samples. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index