Kit and detection method for rapid outdoor detection of residual oxidants in water

Abstract

The invention relates to a kit and a detection method for rapid outdoor detection of residual oxidant in water. The kit comprises the following components: six ferrous ammonium sulfate hexahydrate centrifugal pipes, each containing 0.392 g of ferrous ammonium sulfate hexahydrate, six hollow centrifugal pipes, six H2SO4 reagent bottles, each containing 5 mL of 6mol / L H2SO4, six potassium permanganate reagent bottles, each containing 10 mL of 0.1 mol / L KMnO4 solution, six disposable filters, each containing a 0.45 mu m filter membrane, six injectors, 24 pasteur pipets, six of which are on standby, and six hollow transparent glass bottles, wherein all the components are put in a box. The kit disclosed by the invention has simple arrangement and low cost, and is convenient to carry; the method is simple, and displays rapid and high-efficiency monitoring effect due to the use of ferrous ammonium sulfate as the reducing agent and potassium permanganate as the oxidant, and the results can be directly read during real-time determination; and the kit is convenient to use, and the kit and the detection method are especially applied to rapid outdoor detection of residual oxidants in water.

Description

technical field [0001] The invention relates to a method for measuring oxidants, in particular to a rapid detection kit and a detection method for measuring residual oxidants in water by chemical means. Background technique [0002] At present, in the chemical remediation of contaminated sites, commonly used oxidants include permanganate (MnO 4 - ), Fenton's reagent (hydrogen peroxide + iron ion, H 2 o 2 + Fe 2+ ) and persulfate (S 2 o 8 2- ), among which permanganate is more widely used. In order to optimize the dosage of chemicals and monitor the reaction between chemicals and pollutants, it is necessary to accurately measure the residual amount of oxidant in remediation soil or groundwater. In the prior art, the determination of persulfate and hydrogen peroxide or permanganate in the Fenton system is usually carried out in a laboratory, and commonly used determination methods include iodometric method, potassium permanganate method or sodium oxalate method. From...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of kit and detection method for the outdoor fast detection of residual oxidant in water, select ferrous ammonium sulfate hexahydrate as reducing agent in the titration experiment, potassium permanganate as oxidant, replace original KI and Sodium oxalate, etc., solve the problems of large detection errors, slow response speed, complicated process, poor universality, and unsuitability for outdoor rapid detection in existing monitoring technologies; in addition, the present invention replaces the original complicated iron stand in the laboratory with a simple kit , Burette, Erlenmeyer flask, pipette and other combined equipment and instruments to solve the problems of complex equipment matching, high cost, cumbersome operation and complicated result conversion process in the prior art

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