Optical fiber sensor device and detection method for online detection of sulfide concentration in water quality
A technology of sulfide and concentration, applied in the direction of color/spectral characteristic measurement, etc., can solve the problem that sulfide cannot be monitored in situ on site, achieve stable and reliable measurement results, save manpower and material resources, and increase measurement accuracy
Active Publication Date: 2016-08-24
OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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[0005] The purpose of the present invention is to solve the deficiency that the sulfide in the water sample cannot be monitored in situ at present, and propose an optical fiber sensor device and detection method for online detection of the sulfide concentration in the water quality
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Embodiment 1
[0032] The invention provides an optical fiber sensor device for online detection of sulfide concentration in water quality. The device includes a sample acidification component, a gas balance component, a solution absorption component and an optical detection component.
[0033] The sample acidification component includes a sampling pump and a mixer. In this embodiment, the sampling pump includes a peristaltic pump P2, a pulse micropump P3 and a pulse micropump P4, and the mixer includes a mixer M1 and a mixer M2. One end of the peristaltic pump P2 is used for sampling the water quality sample S, and the other end is connected to the liquid inlet of the mixer M1. One end of the pulse micropump P3 is used to inject the reducing reagent R2, and the other end is connected to the liquid inlet of the mixer M1. One end of the pulse micropump P4 is used for sampling the acid reagent, that is, hydrochloric acid R3, and the other end is connected to the liquid inlet of the mixer M2. ...
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The invention discloses an optical fiber sensor device and a detection method for online detection of sulfide concentration in water quality. The optical fiber sensor device includes a sample acidification component, a gas balance component, a solution absorption component, and an optical detection component. The substance is converted into volatile hydrogen sulfide gas in acidic medium; hydrogen sulfide penetrates the Teflon AF tube wall into the absorption solution through diffusion and is converted into sulfur ions; , Exchange the balanced absorption solution and then transmit it to the detector via optical fiber; use multiple linear regression to establish a model to calculate the content of sulfide in the water sample, so as to realize the detection of sulfide in the water body. The invention has stable and reliable measurement results, fast and accurate detection process, good reproducibility, stable and reliable results, automatic operation of the detection process, continuous real-time on-line monitoring for a long time, saving manpower and material resources.
Description
technical field [0001] The invention relates to a method for detecting sulfide in water samples, in particular to an optical fiber sensor device and a detection method for online detection of sulfide concentration in water quality. Background technique [0002] There are two main sources of sulfide in water quality: one is that the minerals in the water contain sulfide, and the other is that the wastewater discharged from leather, paper, chemical, printing and dyeing industries contains a large amount of sulfide. The level of sulfide content is an important index to measure the water quality, especially the quality of the ocean bottom environment. Studies have shown that the sulfide content in the sedimentary environment is positively correlated with the organic load, negatively correlated with the biomass, and has a great influence on the oxygen consumption rate. Sulfide ions have a strong chemical effect on many metal ions in the metabolism of organisms, and at the same t...
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IPC IPC(8): G01N21/33
Inventor 郭翠莲王洪亮张述伟褚东志马然程岩王昭玉侯广利刘岩王茜石小梅刘东彦吕婧曹璐张颖张颖颖范萍萍尤小华
Owner OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI