Method for detecting aluminum ions and tin ions in water phase by using water-soluble porphyrin probe

A water-soluble, aluminum ion technology, applied in the field of fluorescence analysis and testing, can solve the problems of easy volatility and environmental pollution, and achieve the effects of easy preparation, no toxic side effects, and low cost

Inactive Publication Date: 2011-09-14
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most tin in nature exists in a tetravalent state. Under anoxic conditions, tin is methylated under the action of bacteria, and the resulting methyl tin is relatively volatile, and often escapes from water into the atmosphere and migrates, causing pollution to the environment.

Method used

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  • Method for detecting aluminum ions and tin ions in water phase by using water-soluble porphyrin probe
  • Method for detecting aluminum ions and tin ions in water phase by using water-soluble porphyrin probe
  • Method for detecting aluminum ions and tin ions in water phase by using water-soluble porphyrin probe

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Experimental program
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Effect test

Embodiment 1

[0022] Embodiment 1: compound 1 Dissolved in distilled water to make 3.0×10 -5 mol / L, take 2 ml and put it into a cuvette; another prepared concentration is 3.0×10 -2 mol / L Al 3+ Aqueous solution, sequentially measure 2 microliters of Al 3+ The solution was added into a cuvette, and the ultraviolet absorption spectrum was measured. When Al 3+ The concentration is 2.5×10 -4 mol / L, the maximum absorption peak of the ultraviolet spectrum red-shifted to 434 nm, and two new absorption peaks appeared at 497 nm and 713 nm, which did not follow the Al 3+ Concentration increases and continues to red shift.

Embodiment 2

[0023] Embodiment 2: Implementation method is the same as embodiment 1, just Al 3+ The solution was changed to Sn 4+ solution, and measure the UV absorption spectrum. When Sn 4+ The concentration is 2.0×10 -3 mol / L, the maximum absorption peak of the UV spectrum red-shifted to 434 nm, and two new absorption peaks appeared at 494 nm and 644 nm, which did not follow the Sn 4+ Concentration increases and continues to red shift.

Embodiment 3

[0024] Embodiment 3: implementation method is the same as embodiment 1, just Al 3+ The solution was changed to Na + solution, and measure the UV absorption spectrum. The absorption spectrum did not change significantly.

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Abstract

The invention relates to a method for high selective identification of aluminum ions and tin ions in water phase by using a water-soluble porphyrin probe. According to the method, an ultraviolet-visible spectrophotometer and a fluorescence spectrophotometer are used for detecting the characteristic absorption peak and emission peak of water-soluble porphyrin solution to red shift to certain wavelength respectively to identify the existence of aluminum ions or tin ions in water phase; and fluorescence intensity of human lung carcinoma A549 cells are observed under an upright fluorescent microscope to judge the existence of aluminum ions. In the invention, the sensitivity is high, and rapid detection can be realized; the porphyrin probe has a simple structure and is easy to prepare, and both excitation wavelength and emission wavelength are within visible region; the operation is simple, the fabrication cost is low, and the reagent used and the operation process have no toxic and side effects; and the probe has good selectivity to aluminum ions or tin ions, metal ions such as natrium ions, kalium ions, magnesium ions, copper ions, lead ions and the like have no interference on detection, and the invention can realize detection of aluminum ions in cells.

Description

technical field [0001] The invention relates to a water-soluble porphyrin probe applied to the highly selective recognition of aluminum ions and tin ions in water phase, and belongs to the technical field of fluorescence analysis and testing. Background technique [0002] Porphyrin (Porphyrin) compounds widely exist in nature, it is a macrocyclic compound containing 4 pyrrole molecules. Porphyrins are a general term for a series of derivatives whose parent structure porphin (Porphin) is substituted by other substituents, or whose center is substituted by metal ions. Macrocyclic Conjugated Structures of Bonds [See: (a) Smith K.M., Ed. Porphyrins and Metalloporphyrins; Elsevier: Amsterdam, 1975. Press: New York, 1966; (b) Dolphin D., Ed. The Porphyrins; Academic Press : New York, 1978-1979.]. [0003] Porphyrin compounds have many unique photoelectric properties, good light and thermal stability, and have a large molar absorptivity in the visible light range, so they have be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/33G01N21/64
Inventor 吴迪李莉莉周向葛
Owner SICHUAN UNIV
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