Method for detecting trace hydroxylamine in water through ABTS free radical fading spectrophotometry method

A technology of spectrophotometry and free radicals, applied in the direction of color/spectral characteristic measurement, etc., can solve the problems of high detection limit, poor selectivity, high equipment requirements, etc., and achieve satisfactory selectivity
CN102937577AInactive Publication Date: 2013-02-20SHANGHAI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI UNIV
Publication Date
2013-02-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to a method for detecting trace hydroxylamine in water by using an ABTS free radical (2,2-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)free radical) fading reaction principle, and belongs to the technical field of water pollution control and water quality detection. The method comprises the following steps: a, preparing an ABTS free radical use solution and a hydroxylamine use solution; b, mixing the two solutions, and heating for 10 min in a water bath kettle; and c, determining absorbance of a hydroxylamine solution requiring detection at a suitable wavelength through colorimetry by using a spectrophotometer. The detection method has characteristics of simple operation, high sensitivity, low detection limit, good selectivity, cheap equipment and low detection cost, and is an economical, fast and intuitive quantitative determination method.
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Description

technical field

[0001] The invention relates to a method for detecting trace amounts of hydroxylamine in water by ABTS free radical fading spectrophotometry, belonging to the fields of water pollution control and water quality detection. Background technique

[0002] Hydroxylamine is a commonly used industrial reagent, widely used in the electronics and pharmaceutical industries. Trace amounts of hydroxylamine are toxic to humans, animals and plants. Because of its harmfulness, some governments have stipulated that the concentration of hydroxylamine in sewage should be below the ppm level in order to ensure the safety of local organisms.

[0003] Currently, methods for detecting hydroxylamine include high performance liquid chromatography, double amperometric titration, and polarography. However, most of these methods have cumbersome pretreatment, high equipment requirements, high detection limits, and poor selectivity. Therefore, no matter from the consideration of indus...

Claims

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