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A kind of detection method of barium ion in drinking water

A detection method and drinking water technology, applied in the field of chemical analysis, can solve the problems of high cost and expensive, and achieve the effects of low cost, high sensitivity, sample processing and simple operation

Active Publication Date: 2019-05-03
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods have high accuracy and sensitivity, but require expensive instruments and professional detection technicians, and the cost is high

Method used

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  • A kind of detection method of barium ion in drinking water
  • A kind of detection method of barium ion in drinking water
  • A kind of detection method of barium ion in drinking water

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Embodiment 1: a kind of detection method of barium ion in drinking water, comprises the steps:

[0048] (1) Prepare fluorescent probe solution: Accurately weigh 25.04 mg of fourteen-membered cucurbitan (tQ[14]) and 4.80 mg of thiazole orange (TO), dissolve with pH=2 HCl aqueous solution and dilute to 100 mL. A molar ratio of 2:1 and a molar concentration of 1.0×10 -4 The fluorescent probe T of mol / L (molecular formula is: C 84 h 84 N 56 o 28 @C 20 h 17 N 2 S) the standard solution;

[0049] (2) Measurement of fluorescence spectrum: add drinking water to be measured in the fluorescent probe solution, then use the HCl solution of pH=2 to constant volume, after standing for 15 minutes, measure the fluorescence emission spectrum with a fixed excitation wavelength of 501nm, and draw The change curve of the fluorescence intensity at the excited wavelength;

[0050] (3) Fluorescence spectrum analysis: calculate the fluorescent emission spectrum intensity change value ...

Embodiment 2

[0051] Embodiment 2: a kind of detection method of barium ion in drinking water, comprises the steps:

[0052] (1) Prepare fluorescent probe solution: Accurately weigh 25.04 mg of fourteen-membered cucurbitan (tQ[14]) and 4.80 mg of thiazole orange (TO), dissolve with pH=2 HCl aqueous solution and dilute to 100 mL. A molar ratio of 2:1 and a molar concentration of 1.0×10 -4 The fluorescent probe T of mol / L (molecular formula is: C 84 h 84 N 56 o 28 @C 20 h 17 N 2 S) the standard solution;

[0053] (2) Measurement of fluorescence spectrum: add drinking water to be measured in the fluorescent probe solution, then use the HCl solution of pH=2 to constant volume, after standing for 10 minutes, carry out the measurement of fluorescence emission spectrum with a fixed excitation wavelength of 501nm, and draw The change curve of the fluorescence intensity at the excited wavelength;

[0054] (3) Fluorescence spectrum analysis: calculate the fluorescent emission spectrum intens...

Embodiment 3

[0055] Embodiment 3: a kind of detection method of barium ion in drinking water, comprises the steps:

[0056] (1) Prepare fluorescent probe solution: Accurately weigh 25.04 mg of fourteen-membered cucurbitan (tQ[14]) and 4.80 mg of thiazole orange (TO), dissolve with pH=2 HCl aqueous solution and dilute to 100 mL. A molar ratio of 2:1 and a molar concentration of 1.0×10 -4 The fluorescent probe T of mol / L (molecular formula is: C 84 h 84 N 56 o 28 @C 20 h 17 N 2 S) the standard solution;

[0057] (2) Measurement of fluorescence spectrum: add drinking water to be measured in the fluorescent probe solution, then use the HCl solution of pH=2 to constant volume, after standing for 20 minutes, measure the fluorescence emission spectrum with a fixed excitation wavelength of 501nm, and draw The change curve of the fluorescence intensity at the excited wavelength;

[0058] (3) Fluorescence spectrum analysis: calculate the fluorescent emission spectrum intensity change value ...

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Abstract

The invention discloses a method for detecting barium ions in drinking water. A reagent containing a fluorescent probe T serves as a fluorometric reagent, to-be-tested drinking water is added into the fluorometric reagent, the fluorometric reagent is excited through laser with a fixed wavelength, fluorescence emission spectrum intensity change values delta F before and after the fluorometric reagent is added into the to-be-tested drinking water are observed, and the barium ions in the drinking water can be detected. The method has the advantages of being low in analysis cost, simple to operate, sensitive and rapid.

Description

technical field [0001] The invention belongs to the field of chemical analysis, in particular to a method for detecting barium ions in drinking water. Background technique [0002] Barium is a slightly lustrous silver-white alkaline earth metal. There are many kinds of barium compounds, such as barium chloride, barium carbonate, barium sulfate and barium hydroxide. Barium compounds are widely used in pigments, steel quenching, ceramics and glass industries. With the wide application of barium compounds, the discharge of barium-containing wastewater and waste to the environment during the production process will also increase, and the accumulation in the environment will cause a certain degree of pollution and threaten human health. Soluble barium can cause acute poisoning , gastrointestinal irritation symptoms, hypokalemia, chest tightness, palpitations and so on. Oral administration of 200-300 mg of barium chloride can cause poisoning, and 800-1000 mg can cause death. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64
CPCG01N21/6428G01N2021/6432
Inventor 黄英张静唐青陶朱
Owner GUIZHOU UNIV
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