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Device and method for on-line detection of sulfide concentrations in water sample by utilization of fluorescence spectrophotometry

A fluorescence spectrophotometry and sulfide technology, which is applied in the fields of fluorescence/phosphorescence, material excitation analysis, etc., can solve the problem that sulfide cannot be monitored in situ on site, and achieve stable and reliable measurement results, good reproducibility Effect

Active Publication Date: 2013-10-23
青岛觅海科技有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that sulfide in water samples cannot be monitored in situ at present, and provides a device and method for detecting sulfide concentration in water by fluorescence spectrophotometry. The present invention is suitable for online in situ measurement of sulfide in water quality , the present invention specifically includes a sample acidification component, an air stripping component, a solution absorption component, a gas supply component and a fluorescence detection component to form a system-integrated detection device, the measurement result is stable and reliable, and it can be monitored continuously in real time for a long time, saving manpower and material resources

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  • Device and method for on-line detection of sulfide concentrations in water sample by utilization of fluorescence spectrophotometry

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Embodiment 1

[0038] The structure of the sulfide automatic analysis device in the water body of the present invention is as follows: figure 1 shown. The device for online detection of sulfide concentration in water samples of the present invention includes a sample acidification component, an air stripping component, a solution absorption component, an air supply component and a fluorescence detection component.

[0039] Peristaltic pumps PP1 and PP2 of the present invention are commercially available 6-rotor pulse pumps with a pump flow rate of 1 to 100ml / min; miniature vacuum pumps MP1 and MP2 are commercially available pumps with a pump flow rate of 10 to 1000ml / min; three-way valves V1, V2, V3, V4, and V5 are commercially available two-position three-way solenoid valves, and the inner core is made of acid and alkali resistant materials such as PEEK. The three-way solenoid valve has one outlet and two inlets. The inlet is divided into a normally open port and a normally closed port. It...

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Abstract

The invention discloses a device and a method for on-line detection of sulfide concentrations in a water sample by utilization of fluorescence spectrophotometry. The device comprises a sample acidification component, a gas extraction component, a solution absorption component, a gas supply component, a fluorescence detection component, and the like. The invention further provides the method for on-line sulfide detection by using the device. The device and the method have advantages of stable and reliable detection results, rapid and accurate detection processes, good reproducibility, stable and reliable results, capability of achieving automatic detection processes, capability of continuously real-time on-line monitoring for a long time and capability of saving human and material resources.

Description

technical field [0001] The invention relates to a method for detecting sulfide in water samples, in particular to a device and method for detecting the concentration of sulfide in water by fluorescence spectrophotometry. Background technique [0002] Sulfide is one of the important substances widely present in water quality, and it is an important detection index of water pollution. Commonly used methods for detecting sulfide concentration in water include photometry, chromatography, iodometric method, electrochemical method, etc. The most commonly used of these methods is spectrophotometry, which also includes methylene blue spectrophotometry, fluorescence photometry, gaseous infrared spectrophotometry, gaseous ultraviolet spectrophotometry, flow injection spectrophotometry, etc. Fluorescence spectrophotometry has the characteristics of high sensitivity, good selectivity, and low detection limit. According to different measurement principles, there are three main types of...

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Application Information

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IPC IPC(8): G01N21/64
Inventor 张述伟王洪亮王昭玉褚东志郭翠莲马然程岩侯广利刘岩王茜石小梅刘东彦任国兴吕婧曹璐
Owner 青岛觅海科技有限公司
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