Real-time online dynamic detection system for pentachlorophenol degradation intermediate

Abstract

The invention discloses a real-time online dynamic detection system for a pentachlorophenol degradation intermediate. The system comprises an excitation light source, a pentachlorophenol degradation reaction container, a chemical oxidation reagent container, a chemiluminiscence detection pond, a photoelectric multiplying tube and a signal analyzer host, wherein the pentachlorophenol degradation reaction container and the chemical oxidation reagent container are both communicated with the chemiluminiscence detection pond; and the photoelectric multiplying tube is used for converting light signals produced in the chemiluminiscence detection pond into electric signals; and the photoelectric multiplying tube is connected with the signal analyzer host, and the signal analyzer host is connected with a computer terminal. When the real-time online dynamic detection system is used, the online detection can be realized, the operation is simple, and a sample does not need to be subjected to processes of offline separation, online detection and the like, so that the detection speed is high, the working efficiency is improved, and the system is suitable for rapidly screening and evaluating pentachlorophenol degradation capacity of photocatalytic materials; and the system can be further used for tracking dynamic change of TrCBQ-OH and TCBQ online and tracking generation and degradation processes according to dynamic information.

Description

technical field [0001] The invention relates to a real-time online dynamic detection system for pentachlorophenol degradation intermediates. Background technique [0002] Pentachlorophenol is a common chlorinated aromatic organic pollutant. Due to its broad-spectrum antibacterial, insecticidal, and flame-retardant effects, it is widely used as raw materials for industrial and agricultural production, as well as for antisepsis and disinfection of wood, paint and other products. It can enter the environment through volatilization, container leakage, waste water discharge, etc., seriously polluting the atmosphere, soil, groundwater and surface water. These POPs can cause biological variation at ultra-trace exposure doses. Therefore, removing pentachlorophenol pollutants in the environment is one of the main tasks of today's environmental problems. Due to the characteristics of low toxicity and strong oxidation ability, photo(catalytic) degradation technology has received exte...

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Problems solved by technology

However, the current research methods for the photocatalytic degradation reaction process of pentachlorophenol mainly include high performance liquid chromatography, mass spectrometry, etc., all of which need to be captured by adding selective probes, and then sampled, separated, and measured at a certain time point. Low sensitivity, tedious and time-consuming, unable to perform online in-situ dynamic analysis, unable to provide sufficient online in-situ verification means for the generation process of pentachlorophenol pollutants degradation toxic intermediates, and the generation and regularity of the photocatalytic degradation of toxic intermediates don't know enough

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