Method for fast detecting content of fluorine ion contained in antarctic krill

A technology of Antarctic krill and detection methods, applied in the direction of measuring devices, material analysis by electromagnetic means, instruments, etc.

Inactive Publication Date: 2013-03-13
SHANGHAI OCEAN UNIV
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Problems solved by technology

Although the dielectric properties are widely used in fruits, vegetables, eggs, beans, oils and some

Method used

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Embodiment Construction

[0019] The present invention is further described below in conjunction with the examples, and the examples of the present invention are given.

[0020] The rapid detection method of fluoride ion content in this Antarctic krill comprises the following steps:

[0021] 1) Take 1-5g of Antarctic krill powder or fresh shrimp feed, put it in deionized water with a mass ratio of 1:100, heat under reflux at 90-100°C for 1-4h, then cool to 30°C for later use;

[0022] 2) Under the condition of 30°C, use the coaxial probe method to measure the dielectric properties of NaF deionized aqueous solution, draw and determine the NaF deionized aqueous solution at a concentration of 0.1mg / ml-50mg / ml under the condition of 300MHz-3000MHz low frequency The standard curve: Y=13.26*X+C;

[0023] in:

[0024] Y is the dielectric loss rate,

[0025] X is the sodium fluoride concentration,

[0026] C is the correlation coefficient, the value is 1.993;

[0027] 3) After filtering the solution in st...

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Abstract

The invention relates to a method for fast detecting fluorine ions contained in antarctic krill, which comprises the following steps: (1) picking 1-5 grams of antarctic krill powder or fresh krill materials, placing into deionized water with the mass ratio of 1:100, refluxing and heating for 1-4 hours under the temperature of 90-100 DEG C, and then cooling to 30 DEG C for standby application; (2) determining the dielectric characteristics of an NaF deionized water solution by utilizing a coaxial probe method under the condition of 30 DEG C, and drawing and determining the standard curve: Y=13.26*(X+C) of the NaF deionized water solution under the condition of low frequency of 300-3000 MHz when the concentration of the NaF deionized water solution is 0.1-50 mg/ml; (3) filtering a solution obtained in step (1), then determining the dielectric loss ratio of the solution, introducing into the standard curve obtained in step (2), and determining and computing the content of F ions. The method disclosed by the invention obtains the characteristic relationship of fluorine ion content according to the equimolar dissociation reaction: NaF=Na++F+ of the NaF deionized water solution, thereby obtaining the fluorine ion content YF=1.296*(X-D).

Description

technical field [0001] The invention relates to a fluoride ion detection technology, in particular to a rapid detection method for the fluoride ion content in Antarctic krill, and belongs to the technical field of food detection. Background technique [0002] Antarctic krill is a perennial planktonic crustacean widely distributed in Antarctic waters. It has the characteristics of large biological storage, wide distribution, and high nutritional value. It is an important new marine protein resource that needs to be developed and utilized. However, the shell of Antarctic krill has a functional part that accumulates fluorine in seawater, so krill contains a large amount of fluorine. Moreover, the fluorine content in Antarctic krill under spot conditions is very low, within the allowable range for human consumption, but after the Antarctic krill dies, the fluorine in the shrimp shell will quickly seep into the shrimp meat, making the of Antarctic krill are time zone-used due to...

Claims

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Application Information

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IPC IPC(8): G01N27/60
Inventor 金银哲程裕东陆建锋
Owner SHANGHAI OCEAN UNIV
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