Method for simply and rapidly detecting aniline

An aniline, fast technology, applied in the field of detection, can solve the problems of poor reproducibility, low sensitivity, expensive instruments, etc., and achieve the effects of shortening analysis and testing time, improving sensitivity, and mild conditions

Inactive Publication Date: 2015-06-03
FUJIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of these methods have low sensitivity and large interference, some are time-consuming and cumbersome to operate, some are expensive and require high equipment, and are not easy to popularize.
Chemiluminescence analysis has the advantages of high sensitivity, simple instrument, rapid analysis, and easy automation, but there are very few reports on the use of chemiluminescence analysis to detect aniline.
And there are some defects: due to the use of polyphosphoric acid medium system, the viscosity of polyphosphoric acid brings a lot of inconvenience to the operation
More importantly, as the concentration of polyphosphoric acid increases (up to 0.1M), the viscosity increases, and the problems of luminescence peak shape splitting and poor reproducibility appear

Method used

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  • Method for simply and rapidly detecting aniline
  • Method for simply and rapidly detecting aniline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Make a standard curve: the configuration concentrations are 0.15×10 –9 g / mL, 0.32×10 –9 g / mL, 0.63×10 –9 g / mL, 6.3×10 –9 g / mL, 8.2×10 –9 g / mL, 28×10 –9 g / mL and 63×10 –9 The aniline standard solution of g / mL is then measured by the method of the present invention, and a standard curve is drawn.

[0022] The specific measurement process is as follows: (1) pipette equal volumes of nano-silver solution and aniline solution in a centrifuge tube, mix well, and act for 5 minutes to make the interaction complete; (2) pipette 200 μL of the above-mentioned nano-silver solution / aniline solution Into the chemiluminescence cell (40×14mm quartz tube), inject 200 μL of luminol-hydrogen peroxide chemiluminescence reagent (5×10 -5 M Luminol and 1×10 -2 The volume ratio of M hydrogen peroxide is 2:1), and the chemiluminescence intensity was measured and recorded by IFFL-D flow injection chemiluminescence analyzer. Draw a standard curve according to the concentration of aniline s...

Embodiment 2-7

[0025] Examples 2-4 take tap water samples, and examples 5-7 take lake water samples and carry out standard addition recovery experiments according to the above-mentioned experimental procedures, and obtain the aniline content in each sample through the standard curve, and the addition amount of aniline in the 6 examples (g / mL), measured value (g / mL), recovery (%) and relative standard deviation (RSD) are shown in Table 1. The specific experimental steps are as follows:

[0026] Tap water and lake water samples were taken for spike recovery experiments. After filtering the tap water and lake water with medium-speed filter paper, dilute with deionized water for the second time and set the volume to a 100mL volumetric flask. The experiment of recovery rate was carried out by standard addition method, and the results are shown in Table 1.

[0027] The result of aniline determination in table 1 water sample

[0028]

[0029] Experimental results show that the method establis...

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Abstract

The invention discloses a method for simply and rapidly detecting aniline. The method comprises the following steps: a. preparing a nano silver solution and an aniline standard solution; b. preparing a premixed liquid; c. carrying out chemiluminescence analysis and detection and making a standard curve; and d. determining to-be-detected liquid. According to the method disclosed by the invention, the problem of inconvenient operation caused by viscous polyphosphoric acid in a polyphosphoric acid medium system which is adopted by current chemical analysis and detection of aniline can be solved; by virtue of a classical chemiluminescence analysis system, entire operation experimental conditions are relatively moderate, the operation is easy and automatic analysis and operation are facilitated since the method is completed in a homogeneous system; analysis and testing time can be shortened to be within 10min. The developed method for detecting aniline has the advantages of being simple, rapid and sensitive.

Description

technical field [0001] The invention relates to a detection method, in particular to a simple and rapid detection method for aniline. Background technique [0002] Aniline is an important organic chemical raw material, which is widely used in the production processes of rubber, printing and dyeing, pharmaceuticals, plastics, and pottery glazing. It is considered a carcinogenic substance and is a highly toxic substance. It can combine with hemoglobin in the body to form methemoglobin, which will reduce the ability of hemoglobin to bind oxygen and cause human poisoning. Through inhalation and absorption, aniline can cause acute poisoning or chronic poisoning to the human body, resulting in symptoms such as headache, dizziness, fatigue, memory loss, poor breathing, and even suffocation. Long-term exposure to aniline can also cause cancer. Therefore, aniline has become one of the important detection indicators of environmental protection and health departments in various count...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/76
Inventor 齐莹莹修福荣
Owner FUJIAN UNIV OF TECH
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