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Method for detecting tin content in liquid

A detection method and content technology are applied in the field of detection of tin content in liquids, which can solve the problems of low sensitivity and complicated operation, and achieve the effects of high sensitivity, simple operation steps and low detection limit.

Inactive Publication Date: 2014-01-29
SHENZHEN YU CHI TESTING TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention overcomes the disadvantages of complex operation, use of special reagents and low sensitivity of the tin determination method in the prior art, and provides a detection method of tin content in liquid

Method used

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  • Method for detecting tin content in liquid
  • Method for detecting tin content in liquid
  • Method for detecting tin content in liquid

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Embodiment Construction

[0018] as attached figure 1 As shown, the detection method of tin content in a kind of liquid of the present embodiment mainly consists of four steps of configuring tin standard solution, drawing standard curve, sample pretreatment, detecting sample solution and calculating the concentration of tin in the sample, Specific steps are as follows:

[0019] A. configure tin standard solution: prepare tin standard solution, and add lanthanum solution in this tin standard solution, the concentration of the preferred tin standard solution of the present embodiment is 100 μ g / L, and guarantee that every 100mL standard solution contains 5mL concentration is 30g / L lanthanum solution; prepare blank diluent, and add lanthanum solution in the blank diluent, and ensure that every 100mL blank diluent contains 5mL concentration of 30g / L lanthanum solution; dilute tin standard solution with blank diluent, The micro-injector is added according to the injection volume shown in the table below t...

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Abstract

The invention provides a method for detecting tin content in a liquid and aims at overcoming the defects that a special reagent is used in a tin determination method in the prior art and sensitivity is low. The method for detecting the tin content in the liquid comprises the following concrete steps: A, preparing a tin standard solution, and adding a lanthanum solution into the tin standard solution; preparing a blank dilution solution, and adding the lanthanum solution into the blank dilution solution; preparing tin standard solutions in different concentrations; B, placing the tin standard solutions in different concentrations into a graphite furnace, determining absorbance of each standard solution, and making an absorbance-concentration standard curve; C, adding the lanthanum solution into a liquid sample to be detected, so as to prepare a sample solution; D, placing the sample solution into the graphite furnace, determining the absorbance of the sample solution, obtaining tin concentration of the sample solution, and calculating tin content in the sample solution. The method for detecting the tin content in the liquid has the advantages of high sensitivity, low detection limit, high accuracy, no use of special reagent and the like and is applicable to detection of tin content.

Description

technical field [0001] The invention relates to a method for detecting metal content in liquid samples, in particular to a method for detecting tin content in liquid. Background technique [0002] Tin is one of the indispensable trace elements in the human body. It has an important impact on people's various physiological activities and maintenance of human health. Its main physiological function is in anti-tumor. In addition, tin also promotes the synthesis of proteins and nucleic acids. It is beneficial to the growth and development of the body; it also forms a variety of enzymes and participates in the biological reactions of flavin enzymes, which can enhance the stability of the internal environment. However, if people eat or inhale too much tin, they may experience dizziness, diarrhea, nausea, chest tightness, shortness of breath, dry mouth and other adverse symptoms, and lead to a decrease in the calcium content in the serum. In severe cases, it may also cause gastroen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/74
Inventor 李凌伟邱自兵何婷
Owner SHENZHEN YU CHI TESTING TECH CO LTD
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