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Method for detecting perboric acid ion

A linear regression equation and concentration technology, applied in the field of detection and analysis of perborate ions, to achieve the effect of simple detection process, simple detection means and cheap raw materials

Inactive Publication Date: 2012-07-18
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the harm of perborate has not been paid attention to, and there are few methods for detecting perborate. Therefore, it is necessary to develop a method for detecting perborate with simple detection process, sensitivity and low cost.

Method used

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  • Method for detecting perboric acid ion
  • Method for detecting perboric acid ion
  • Method for detecting perboric acid ion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Synthesis of AC: Dissolve 19.1 mmol of 7-hydroxycoumarin in 50 ml of dichloromethane, add 2 ml of acetic anhydride and a drop of pyridine, stir at room temperature for 12 h, filter under reduced pressure and rinse with concentrated brine to obtain AC.

[0021] Characterization of AC:

[0022] 1 H NMR, (300MHz, CDCl 3 ): δ (ppm) 2.36 (s, 3H), 6.41 (d, 1H), 7.07 (d, 1H), 7.14 (s, 1H), 7.50 (d, 1H), 7.71 (d, 1H); 13 C NMR (75MHz, CDCl 3 ): δ21.91, 111.24, 116.88, 117.45, 119.20, 129.35, 143.64, 153.90, 155.44, 161.15, 169.53; EI-MS m / z 204 (calcd.347.1); Elemental analysis (calcd.%) for C 11 h 8 o 4 : C, 64.71; H, 3.95: Found: C, 64.73; H, 3.92. EI-MS see figure 1 .

Embodiment 2

[0024] Prepare HEPES (10mM) buffer solution with pH=5.0, prepare 2mM AC solution with methanol, and prepare 2mM BO with distilled water 3 - Solution Add 2mL of HEPES buffer solution and 10μL of AC methanol solution to a clean fluorescence cuvette, take BO 3 - The solution is gradually added to the cuvette with a micro-injector, and is detected on the fluorescence spectrophotometer while adding the sample. 3 - The addition of , the fluorescence intensity at 455nm gradually increases, and the fluorescence emission diagram is shown in figure 2 .

Embodiment 3

[0026] Add 2mL of HEPES buffer solution and 10 μL of AC methanol solution to 16 fluorescent cuvettes, and add 20 molar equivalents of BO in Example 2 respectively. 3 - , and 200 molar equivalents of its various anions (F - , Cl - , Br - , CN - , C 2 o 4 2- , HSO 3 - , SCN - , S 2 o 3 2- , P 2 o 7 4- , SO 3 2- , PO 4 3- , CO 3 2- , HS - , AcO - , I - ), detected on the fluorescence spectrometer, draw the histogram of the 455nm fluorescence intensity corresponding to different anions, see image 3

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Abstract

The invention provides a method for detecting perboric acid ion BO<3->, and in particular relates to a method for quantitatively detecting the BO<3-> based on a coumarin derivative acetoxycoumarin (AC). Particularly, the content of the BO<3-> is quantitatively detected by the AC in aid of fluorescence spectrum in a 10mM 4-(2-Hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES) buffer solution with pH of 5.0. The method has the characteristics of high sensitivity and selectivity to the BO<3->, convenient, sensitive and quick detection process and accurate detection result.

Description

technical field [0001] The present invention relates to perborate ion (BO 3 - ) detection and analysis technology, which specifically belongs to a reagent and method for quantitatively detecting perborate ions. Background technique [0002] Perborate is widely used in our daily life, such as bleach, cosmetics, pharmaceutical preparations and cleaning agents. Sodium perborate has a strong bleaching ability and does not damage fibers, so it is suitable for bleaching protein fibers. It is used as a disinfectant and bactericide in medicine, and can also be used as a mordant, detergent additive, deodorizer, additive for electroplating solution, analytical reagent, organic synthesis polymer, etc. Sodium perborate is highly irritating to the upper respiratory tract mucosa, and can corrode the digestive tract when taken orally, causing gastrointestinal bleeding. This product is irritating and corrosive to eyes and skin. Long-term exposure can cause loss of appetite, weight loss,...

Claims

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Application Information

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IPC IPC(8): G01N21/64
Inventor 杨瑜涛霍方俊阴彩霞刘滇生
Owner SHANXI UNIV
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