High-precision online cyanide water quality analyzer

Abstract

The invention discloses a high-precision online cyanide water quality analyzer, which comprises a sampling valve group, a quantitative conveying module, a distillation module, a condensation module and an absorption reaction module which are connected in sequence, wherein the absorption reaction module is provided with a constant volume mechanism and an absorbance detection mechanism, an electromagnetic valve I and an electromagnetic valve II are arranged between the quantitative conveying module and the distillation module, a connecting pipe connected to a liquid discharge pipe behind the absorption reaction module is arranged between the electromagnetic valve I and the electromagnetic valve II, a third electromagnetic valve is arranged at the position, located in front of the connecting point of the liquid discharge pipe and the connecting pipe, of the liquid discharge pipe, and a liquid discharging pump is arranged at the position, located behind the connecting point of the liquid discharge pipe and the connecting pipe, of the liquid discharge pipe. The high-precision online cyanide water quality analyzer can be used for sampling and monitoring the water quality of a monitoring point in situ, so that the detection process is simplified, and the measurement precision of cyanide in a water body is improved.

Description

technical field [0001] The invention relates to the technical field of water quality detection, in particular to a high-precision online cyanide water quality analyzer. Background technique [0002] Cyanide is a highly toxic substance, and its toxicity to the human body is mainly due to its combination with ferricytochrome oxidase to generate cyanide ferricytochrome oxidase, which loses the function of transferring oxygen and causes tissue hypoxia asphyxia. [0003] The main pollution source of cyanide is the waste water discharged from mining, smelting, electroplating, organic chemical industry, ore dressing, coking, gas making, chemical and other industries of small gold mines. Cyanide may be HCN, CN - It exists in water in the form of complex cyanide ion. HCN molecules are very toxic to aquatic organisms. Zinc-cyanide and cadmium-cyanide complexes are almost completely decomposed in very dilute solutions. This solution is highly toxic to fish at normal pH in natural wat...

AI Technical Summary

Problems solved by technology

Pyridine is highly toxic, the titration method is cumbersome, and the detection range of the pyrazolone method is small. The laboratory usually uses the isonicotinic acid-barbituric acid method, which requires a large amount of sample distillation, which is time-consuming and produces a lot of waste liquid; Toxic, artificial sampling experiments are likely to cause harm to the human body

More importantly, on-site real-time detection cannot be carried out, and samples need to be transported to the laboratory for detection. The detection process is complicated and prone to inaccurate detection due to water deterioration

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