KR101654711B1 - Salt production year estimation method - Google Patents

Salt production year estimation method Download PDF

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KR101654711B1
KR101654711B1 KR1020140180465A KR20140180465A KR101654711B1 KR 101654711 B1 KR101654711 B1 KR 101654711B1 KR 1020140180465 A KR1020140180465 A KR 1020140180465A KR 20140180465 A KR20140180465 A KR 20140180465A KR 101654711 B1 KR101654711 B1 KR 101654711B1
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salt
production
year
concentration
potassium
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KR1020140180465A
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Korean (ko)
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KR20160072907A (en
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최훈
김희선
양광희
주현진
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한국수력원자력 주식회사
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Priority to JP2017531690A priority patent/JP6371479B2/en
Priority to CN201580066657.0A priority patent/CN107003416B/en
Priority to PCT/KR2015/008152 priority patent/WO2016098986A1/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/02—Food
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/16—Measuring radiation intensity
    • G01T1/167—Measuring radioactive content of objects, e.g. contamination

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  • Measurement Of Radiation (AREA)
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Abstract

The present invention relates to a method for estimating the amount of potassium-40 (K-40) produced by a gamma radionuclide detector using the property that a constituent insoluble element escapes at a certain rate when a long time Thereby making it easier to estimate the production year of the salt. The present invention for this purpose is to measure the concentration of potassium-40, a radionuclide element, in the wastewater discharged from the sun-salt or its salt through a radionuclide analyzer, and estimate the production year of the sun-salt by measuring the measured potassium- As shown in FIG. In this case, when the concentration of potassium-40 (K-40) measured by the radionuclide analyzer is in the range of 130-220 Bq / kg, the year of production of the salt is estimated to be 1-2 years, 40 concentration below 130 Bq / kg, the year of production of the salt may be estimated to be more than three years.

Description

{Salt production year estimation method}

More particularly, the present invention relates to a method for estimating the concentration of potassium-40 (K-40) using a high-purity gamma nuclide analyzer in order to solve the opacity of the distribution process due to the year of manufacture and the forgery and falsification of manufacturing sites. To estimate the year of production of sun-salt by measuring the K-40 concentration, which is intended to ensure the transparency of the distribution structure of the sun-salt by estimating the year of production of the sun-salt.

In general, the domestic salt industry started to develop in earnest as the salt industry started to develop after the transfer of the salt from mineral to food in March, 2008 and the related work was transferred from the Ministry of Knowledge Economy to the Ministry of Agriculture, Forestry and Fisheries. In recent years, safety management standards for seawater, waters, tidal flats, salt tanks, equipment, and materials used in the production of edible salt have been prescribed (Ministry of Maritime Affairs and Fisheries, Ministry of Maritime Affairs and Fisheries Law, Law No. 11700 , Revised on March 23, 2013).

In addition, the salt test is conducted by the National Fisheries Quality Assurance Institute (Article 15 of the Enforcement Decree of the Salt Industry Promotion Act), the Korea Salt Industry Association (Salt Industry Promotion Act Article 35, Paragraph 1), Mokpo University and the Korea Chemical Fusion Test Institute ).

In addition, to enhance competitiveness through the improvement of salt quality and systematic cultivation of the salt industry, it has stipulated the standard for prohibiting the production of edible salt, the standard for application of the salt law, the designation of the salable salt certification institute, and the corrective certificate for the certified salt.

Meanwhile, the seawater regulation for sea salt water for the production of sea salt by the safety management standard is based on living environment standard including hydrogen ion (pH 6.5-8.5) concentration and total coliform number (less than 1,000 / 100ml), ecological base water quality standard, arsenic, cadmium , Lead, mercury, and reservoir setting standards. The tidal flat facility also includes criteria such as determinable flooring in direct contact with water or solar salt during the production of edible salt, compaction tools, transport tools, machinery, and covers for temporary storage.

In addition, a safety management standard (Ministry of Maritime Affairs and Fisheries notification No. 2013-216) was newly added to the production of salt, salt, salt, refined salt and processed salt of salt, and sodium chloride (more than 70%) and total chlorine (Not more than 40%), water (not more than 15%) and sulfate ion (not more than 5%). (0.15%), sand and soil (less than 0.2%), and ferrocyanide ion (non-detection, anticorrosive) concentrations. (50 μg / L), lead (50 μg / L), cadmium (10 μg / L) and mercury (0.5 μg / L) concentrations were proposed for the seaweeds and reservoirs.

However, in order to improve the transparency of imported solar salt and domestic solar salt from 2013, the history of domestic solar salt is managed by filling in the production area, producer, and production year on the label attached to the domestic solar salt paper bag, There is a problem in that reliability is low.

1. Korean Registered Patent No. 10-1431709 (Published in September, 2014) 2. Korean Patent Laid-Open No. 2014-0031356 (issued on March 31, 2014)

In order to solve all the problems of the prior art, the present invention has been made to solve the problems of the prior art, and it has been found out that the amount of residual potassium-40 (K-40) The present invention has been made to provide a method for estimating the year of production of sun-salt by measuring the K-40 concentration, which makes it possible to more easily estimate the production year of the sun-salt.

Another object of the present invention is to detect the amount of residual potassium-40 (K-40) through a gamma-ray detector by using a property that a constituent insoluble element escapes at a certain rate when a long period of time is left. The goal is to make it possible to manage the quality through the management of the history of solar radiation by estimating the year of production.

Another object of the present invention is to estimate the amount of residual K-40 by detecting the amount of residual insoluble elements in a certain ratio by using a gamma nuclide detector, And to ensure transparency in distribution process.

The present invention configured to achieve the above-described object is as follows. That is, the method for estimating the production date of K-40 by the K-40 concentration measurement according to the present invention is performed by measuring the concentration of potassium radionuclide, which is a radionuclide element, in potassium chloride solution or potassium chloride solution through a radionuclide analyzer, -40 concentration to estimate the production year of the corresponding salt.

When the concentration of potassium-40 (K-40) measured by the radionuclide analyzer is in the range of 130 to 220 Bq / kg in the constitution according to the present invention as described above, If the measured potassium-40 concentration is less than 130 Bq / kg, it is better to estimate the year of production of the salinity for more than 3 years.

In addition, according to the present invention, the time for measuring the concentration of potassium-40 through the radionuclide analyzer is preferably 5,000 to 30,000 seconds.

According to the technology of the present invention, when the sun-salt is left for a long time, the amount of residual potassium-40 (K-40) is detected through the gamma-ray detector using the property that the constituent insoluble elements escape at a certain rate, .

In addition, the technology of the present invention detects the amount of residual potassium-40 (K-40) through a gamma nuclide detector by using a property that a constituent insoluble element escapes at a certain rate if the silver salt is left for a long time, It is estimated that the quality management can be managed through the history management of the sun saliva.

In addition, according to the present invention, when the sun-salt is left for a long time, the amount of residual K-40 is detected through the gamma-ray detector using a property that the constituent insoluble elements escape at a certain rate, Transparency can be ensured.

FIG. 1 is a graph showing the results of measurement of K-40 concentration by the K-40 concentration measurement method according to the present invention. The K-salt was prepared by putting 1 Kg of domestic sun salt into a new type of mariner beaker, A graph showing that at the KeV energy band, the K-40 peak was selected with the appropriate peak shape (10,000 seconds) and the radiation figure was derived.

Hereinafter, a preferred embodiment of the method for estimating the year of production of sun-salt by K-40 concentration measurement according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a graph showing the results of measurement of K-40 concentration by the K-40 concentration measurement method according to the present invention. The K-salt was prepared by putting 1 Kg of domestic sun salt into a new type of mariner beaker, A graph showing that the K-40 peak at the KeV energy band was selected with the appropriate peak shape (10,000 seconds) and the radiation level was derived.

First, prior to describing the technique according to the present invention, technical principles of the invention for solving the problems of the prior art will be summarized as follows. The step of producing the salt is summarized as a step of evaporating the sea water in the sun to complete the salt crystals. Seawater quality safety regulations include water quality standards such as hydrogen ion concentration, total coliform count, cleanliness such as insoluble matter, sand, soil and ferrous ion, and heavy metal pollution standards such as arsenic, lead, cadmium and mercury.

In order to ensure the transparency of domestic salt distribution structure in 2013, the history of domestic solar salt is managed by attaching a label to the turret to confirm the production region, producer and year of production. However, There is a problem that there is no way.

Therefore, the present invention is based on the fact that there is no method for confirming the production date of the salt in the distribution stage as described above, and it is possible to produce the salt by using the characteristic It was planned to divide the year.

In the present invention, the concentration of potassium-40 (K-40), a natural radionuclide species necessarily contained in the salt of the sun, is measured using a high purity germanium spectrum analyzer, And estimates the year of production of the sun salt.

In other words, the method for estimating the year of production of sun-salt by the K-40 concentration measurement according to the present invention is a method for estimating the year of production of the sun-salt by the K-40 concentration measurement, using a radionuclide analyzer, 40, and then the production year of the corresponding salt is estimated through the measured K-40 concentration.

In order to estimate the year of production of sun salts as described above, we measured the concentration of K-40, a radionuclide element, by taking samples of sun-salt by actual year of production in various torsion fields, And a history management standard was set up so that it can be distinguished.

As described above, the concentration of K-40, a radionuclide element, was measured for a sample of a man-made salt which was purchased from a commercial facility through a history management standard, Concentration was estimated based on the history management index and the year of production of the junctal water that melted out from the corresponding salt or salt.

On the other hand, if the potassium-40 (K-40) concentration measured by the radionuclide analyzer falls within the range of 130 to 220 Bq / kg, the estimated year of production of sun salts according to the above- The year of production is estimated to be 1 to 2 years, and if the measured potassium-40 concentration is 130 Bq / kg or less, the year of production of the salt can be estimated to be 3 years or more.

As described above, in the present invention, a high-purity germanium gamma-ray spectrometer (HPGe Gamma Spectroscopy, manufactured by Kenbera Corp., USA) is used as a radionuclide analyzer for measuring the concentration of potassium-40 (K-40) Production, relative efficiency: 30%, corresponding energy band: 1,460 keV).

In general, the salt concentration in seawater is 35%, and the concentration of sodium chloride (27 g / kg), magnesium chloride (3.8 g / kg), magnesium sulfate (1.7 g / kg), calcium sulfate (0.9 g / kg), calcium carbonate (0.1 g / kg) and magnesium bromide (0.1 g / kg). The relative ratios between salts are constant throughout the world, regardless of salinity.

On the other hand, alkali metals (hydrogen, lithium, sodium, potassium, rubidium, cesium, and calcium) are always present in a constant ratio in seawater. In the salt field, water is evaporated by the sunlight, and these elements are formed at a certain rate in the remaining crystals of the sodium salt, and the constituent elements are allowed to escape at a certain rate when they are left to stand for a long time.

As described above, in the present invention, the concentration of K-40, which is a natural radionuclide remaining in the sea salt, is measured by radionuclide analysis, and the K-40 concentration is estimated based on the history management standard for the year of production of the salt. At this time, the radionuclide analyzer measures the intensity of the radionuclide by detecting the gamma ray energy of the radioactivity, and detecting the radionuclide by analyzing the detected gamma ray energy waveform.

- Radiation collapse of radioactive potassium (Potassium-40, half-life: 1,250 million years)

40 K + e - → 40 Ar + gamma ray (gamma ray energy: 1.46 MeV)

For the technology according to the present invention, concentrated sea water for salt production and salt produced between May and August in the salt field in Jindo-myeon, Shinan-gun, which is the representative production site of domestic sea salt, were purchased for each production year. K-40 was diluted with K-40 to a concentration of 10 kG using a high purity germanium gamma-ray nuclide detector (HPGe Gamma Spectroscopy, manufactured by Kenbera, USA, relative efficiency: 30%, corresponding energy band: 1,460 keV) Sec. The graph showing the radiation figures is shown in Fig.

[Example]

The concentration of K-40, which is a radionuclide element in manure, was measured in the salt field of Shin-An-gun, Gun-gun, Korea. We have newly introduced a history management standard that can distinguish production year by deriving a table.

Sun salt Actual production year
(year) K-40
(Bq / kg) Remaining rate relative to function (%)
(Concentration range) Estimated production year
(year) function - 354 100% - A One 135 37 to 62
(130 to 220 Bq / kg)
1-2 years B One 215 C 2 139 D 3 44
37 or less
(130 Bq / kg or less)

more than 3 years E 3 73 F 3 86 G 8 77

As shown in Table 1, the concentration of K-40, a radionuclide element, was measured for randomly purchased mannitol from mannitol or mannitol, even if a commercially available mannitol was purchased at random. , It is possible to estimate the year of production of the solar salt.

As described above, according to the present invention, the amount of residual K-40 is detected through the gamma nuclide detector, so that the year of production of the salt can be more easily estimated, and the production year of the salt is estimated, The quality can be managed. In addition, the transparency of the distribution process can be secured by estimating the production period of the sun-salt.

The present invention is not limited to the above-described embodiments, and various modifications may be made within the scope of the technical idea of the present invention.

Claims (3)

The concentration of potassium-40, a radionuclide element, was measured in the wastewater that was dissolved from the sun-salt or the corresponding salt from the radionuclide analyzer, and the year of production of the corresponding salt was estimated through the measured potassium-40 concentration. When the measured potassium-40 (K-40) concentration falls within the range of 130 to 220 Bq / kg, the production year of the salt is estimated to be 1 to 2 years, and the measured potassium-40 concentration is 130 Bq / kg , The production year of the salt is estimated to be 3 years or more, and the time for measuring the concentration of potassium-40 through the radionuclide analyzer is measured for 5,000 to 30,000 seconds. Estimation method of annual production of. delete delete
KR1020140180465A 2014-12-15 2014-12-15 Salt production year estimation method KR101654711B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1020140180465A KR101654711B1 (en) 2014-12-15 2014-12-15 Salt production year estimation method
JP2017531690A JP6371479B2 (en) 2014-12-15 2015-08-04 Estimation method of production date of solar salt by measuring K-40 concentration
CN201580066657.0A CN107003416B (en) 2014-12-15 2015-08-04 Light salt working year evaluation method based on K-40 measurement of concetration
PCT/KR2015/008152 WO2016098986A1 (en) 2014-12-15 2015-08-04 Method for estimating production year of solar salt by k-40 concentration measurement

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KR101654711B1 true KR101654711B1 (en) 2016-09-08

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TWI702396B (en) * 2017-10-31 2020-08-21 衛生福利部食品藥物管理署 Method for rapid determination of fruit juice authenticity
KR102635737B1 (en) * 2021-08-06 2024-02-14 한국원자력연구원 Calibration method of real-time counting efficiency for monitoring system of radioactive concentration of target radionuclides in seawater
KR20230111962A (en) 2022-01-19 2023-07-26 한국수력원자력 주식회사 Estimation method for age evaluation of solar salt using magnesium concentration
KR20230111964A (en) 2022-01-19 2023-07-26 한국수력원자력 주식회사 Estimation method for age evaluation of solar salt using calcium concentration
KR20230111963A (en) 2022-01-19 2023-07-26 한국수력원자력 주식회사 Estimation method for age evaluation of solar salt using potassium concentration
KR20240001542A (en) 2022-06-27 2024-01-03 한국수력원자력 주식회사 Estimation method for age evaluation of solar salt using relative magnesium concentration to sodium

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JP2012150044A (en) 2011-01-20 2012-08-09 Toshiba Corp Method and device for analyzing nuclide in reactor water
JP2013152121A (en) * 2012-01-24 2013-08-08 Micro Blood Science Co Ltd High-sensitivity radioactivity measuring device of simple type for food product, and method using the same
KR101285824B1 (en) 2013-04-04 2013-07-12 (주)성우이앤티 Radioactive measurement validation method of an used component in nuclear power plant

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CN107003416A (en) 2017-08-01
WO2016098986A1 (en) 2016-06-23
KR20160072907A (en) 2016-06-24
JP2018510322A (en) 2018-04-12
CN107003416B (en) 2019-06-07

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