Mercury ion detection method
A detection method, a technology of mercury ions, applied in material excitation analysis, fluorescence/phosphorescence, etc.
Inactive Publication Date: 2014-06-25
ZHENGZHOU TOBACCO RES INST OF CNTC
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[0004]At present, mercury detection methods mainly include atomic absorption / emission spectroscopy, X-ray diffraction fluorescence spectroscopy, inductively coupled plasma mass spectrometry, and selective cold vapor atomic fluorescence spectroscopy. Disadvantages of expensive equipment required
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[0044] 1) Mix the standard mercury ion solution and the gold nanocluster solution to establish a standard curve between the fluorescence signal quenching of the detection nanocluster and the amount of mercury ions;
[0045] 2) Mix the mercury ion solution with unknown concentration and the gold nanocluster solution, bring the fluorescence signal quenching intensity of the detection nanocluster into the standard curve, and obtain the mercury ion fluorescence intensity in the sample as 160, and the I / I 0 Substituting the value 0.727 into the standard equation yielded a mercury ion concentration of 1019.5 nM.
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Abstract
The invention discloses a mercury ion detection method which is characterized by comprising the following steps: (1) mixing a standard mercury ion solution and a gold nanocluster solution, and establishing a standard curve for detecting the fluorescence signal quenching of nanocluster and the mercury ion quantity; and (2) mixing a sample solution with the gold nanocluster solution, substituting the quenching intensity of the fluorescence signal of the nanocluster into the standard curve, thereby obtaining the content of the mercury ion in the sample. The method has the advantages that the sensitivity is high, the interference of other ions on detection of the mercury ion is slight, and selective detection of the mercury ion can be realized, so that the aim of rapidly detecting the mercury ion concentration is achieved. The method has wide application prospects in mercury ion detection.
Description
[0001] technical field [0002] The invention relates to the detection of harmful ions, in particular to a method for detecting mercury ions. Background technique [0003] The detection of mercury ions is of great significance to the environment and human health. [0004] At present, mercury detection methods mainly include atomic absorption / emission spectroscopy, X-ray diffraction fluorescence spectroscopy, inductively coupled plasma mass spectrometry, and selective cold vapor atomic fluorescence spectroscopy, etc., which have the disadvantage of expensive instruments. [0005] Therefore, the development of efficient, cheap, convenient and fast mercury detection technology has become an important research topic in recent years. purpose of invention [0006] The object of the present invention is to provide a detection method of mercury ions based on the above-mentioned prior art situation, and the rapid detection of mercury ion concentration can be realized by using thi...
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IPC IPC(8): G01N21/64
Inventor 刘萍萍周会娜陈千思翟妞金立锋陈霞郑庆霞林福呈
Owner ZHENGZHOU TOBACCO RES INST OF CNTC