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Method for simultaneously determining aniline and formaldehyde in water based on ultraviolet-visible absorption spectra

A technology of absorption spectrum and detection method, which is applied in the field of water quality index detection, can solve the problems of increasing the operating cost of enterprises and reducing the efficiency of detection, etc., and achieve the effect of simple and easy operation of the detection scheme, reducing operating costs and improving detection efficiency

Inactive Publication Date: 2017-12-01
重庆市宇驰检测技术有限公司
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  • Claims
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Problems solved by technology

[0005] Laboratories generally conduct separate tests according to different items, but in daily monitoring tasks, two or more items are often required to be tested. If they are still tested separately, it will not only reduce the efficiency of the test, but also increase the operating cost of the enterprise

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  • Method for simultaneously determining aniline and formaldehyde in water based on ultraviolet-visible absorption spectra
  • Method for simultaneously determining aniline and formaldehyde in water based on ultraviolet-visible absorption spectra
  • Method for simultaneously determining aniline and formaldehyde in water based on ultraviolet-visible absorption spectra

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Embodiment

[0035] This experiment is a detection method for simultaneous determination of aniline and formaldehyde in water based on ultraviolet-visible absorption spectroscopy. It mainly consists of preparing standard solutions and mixed standard solutions, drawing ultraviolet-visible absorption spectra to determine the best absorption wavelength, and calculating the best absorption wavelength. The coefficient and the calculated concentration of aniline and formaldehyde in the sample to be tested are composed of four steps. Perform blank zero adjustment before the measurement. Place blank samples of aniline and formaldehyde in the two card slots, and use one of them to add to the other The substance is zeroed in order to reduce the mutual influence. The specific implementation steps are as follows:

[0036] (1) Preparation of standard solutions and mixed standard solutions: use nationally recognized certified aniline and formaldehyde standard solutions for dilution, and both are prepared i...

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Abstract

The invention discloses a method for simultaneously determining aniline and formaldehyde in water based on ultraviolet-visible absorption spectra, belonging to the field of water quality index detection. The method mainly comprises the following steps: preparing standard solutions and a mixed standard solution; drawing ultraviolet-visible absorption spectra and determining optimal absorption wavelength; calculating an absorption coefficient at the optimal absorption wavelength; and calculating the concentrations of aniline and formaldehyde in a sample to be detected. Thus, the method realizes the function of simultaneous determination of aniline and formaldehyde.

Description

Technical field [0001] The invention relates to a detection method for simultaneously determining water quality aniline and formaldehyde based on ultraviolet-visible absorption spectroscopy, and mainly relates to the field of water quality index detection. Background technique [0002] The detection of aniline and formaldehyde in water quality is generally carried out separately according to different items using UV-visible spectrophotometer, respectively with reference to the following standards: [0003] GB / T 11889-1989 "Water quality-Determination of aniline compounds N-(1-naphthyl) ethylenediamine azo spectrophotometric method"; [0004] HJ 601-2011 "Water Quality Determination of Formaldehyde-Acetylacetone Spectrophotometric Method". [0005] Laboratories generally conduct separate tests according to different items, but in daily monitoring tasks, it is often necessary to test two or more items. If they are still tested separately, it will not only reduce the efficiency of the te...

Claims

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Application Information

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IPC IPC(8): G01N21/31
CPCG01N21/31
Inventor 陈犁
Owner 重庆市宇驰检测技术有限公司
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