Optical fiber sensing system for simultaneously and rapidly detecting multiple types of heavy metal ions

Abstract

The invention belongs to the range of heavy metal ion detection equipment and particularly relates to an optical fiber sensing system for simultaneously and rapidly detecting multiple types of heavy metal ions.The detection system is composed of a light source module (1), a transmission module (2), a sample loading and detecting module (3) and a photoelectric detection module (4) which are sequentially connected; a wavelength-division multiplexing technology in optical fiber communication and novel fluorescent dye quantum dots are adopted for the system, and two light paths are not needed to be separated through an optical loop device.By means of the optical fiber sensing system for simultaneously and rapidly detecting multiple types of heavy metal ions, simultaneous and rapid detection of multiple types of heavy metal ions can be achieved, miniaturization and portability of an instrument are achieved at the same time, and remote detection, real-time analysis, filed detection and dynamic monitoring are achieved; instrument cost is lowered; by means of the system, multiple types of heavy metal ions in a solution can be detected simultaneously and rapidly, and the optical fiber sensing system is widely applied to the fields of environmental detection, industrial sewage treatment, soil heavy metal pollution, food hygiene inspection, medical application and the like.

Description

technical field [0001] The invention belongs to the scope of heavy metal ion detection equipment, in particular to an optical fiber sensing system for rapidly detecting multiple heavy metal ions at the same time. Background technique [0002] The pollution caused by heavy metal elements has become one of the most harmful sources of environmental pollution due to its long-term, cumulative, latent and irreversible characteristics. Accurate and timely determination of the concentration of heavy metal pollutants (in the form of heavy metal ions) in the environment, waste water, food and other carriers is the key to the control of heavy metal pollution. Conventional analysis methods for heavy metal ions mainly include spectroscopy, chromatography, electrochemical methods, biological detection methods, rapid detection methods, etc. [1] . In recent years, the Ministry of Environmental Protection has issued a series of standards for the detection of heavy metal ions in water quali...

AI Technical Summary

Problems solved by technology

At present, mature heavy metal ion detection instruments are expensive and complex in structure, and one instrument can usually only detect one heavy metal pollutant

In response to the shortcomings of the existing heavy metal ion monitoring instruments, some laboratories have developed electrochemical analysis methods based on [6,7] and biochemical analysis methods [8,9] These instruments are fast and portable, which is conducive to rapid on-site detection, but their sensitivity and accuracy are low, and the types of heavy metal ions detected are limited.

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