Gamma-ray radiochromic solution and radiation dosemeter prepared by using same
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A technology of radiation dose and radiation discoloration, which is applied in the fields of radiation chemistry and nuclear technology, can solve the problems of complex manufacturing process of thin-film dosimeters, low linear range of dose response, and difficulty in on-the-spot judgment, achieving a wide application range, low cost, and few steps. Effect
Active Publication Date: 2013-11-27
SAAS BIOTECH & NUCLEAR TECH RES INST
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Description
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Problems solved by technology
The production process of the film dosimeter is complicated, and the radiochromic solution needs to be coated on the transparent substrate, which requires high uniformity and thickness of the coating film, and requires protection from light during the production and storage process; hot air is required to dry the film after coating; A protective layer is also needed; the dosimeter needs to use instruments to determine the results, which is time-consuming and not intuitive; the linear range of the dose response is low, which is suitable for radiation medicine and scientific experiments, and the dose of radiation sterilization and radiation modification is generally 1000 More than Gy
In decades of radiation processing practice, we need to understand three issues related to dose in a timely manner: ①Is the item irradiated or not; ②Is the irradiation dose appropriate? But it is difficult to judge on the spot and solve the problem in time so as to delay the production cycle and cause waste of manpower and material resources
Method used
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Examples
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Embodiment 1
[0024] Add 0.1 g of Direct Fast Blue to 100 mL of distilled water, and dissolve it completely to make a radiochromic solution. Pour the solution into a transparent PU tube with an outer diameter of 4 mm and a length of 30 mm, and seal both ends to prevent leakage.
[0025] Among the dosimeters produced in the same batch, randomly select multiple dosimeters, and use the silver dichromate dosimeter scale to make a series of color guides with doses of 4 kGy, 6 kGy, 8 kGy, and 10 kGy.
[0026] Add the color guide to the tubular dosimeter, and the radiochromic dosimeter is completed.
Embodiment 2
[0028] Dissolve 0.5g of basic magenta in 50mL of distilled water as solution A; dissolve 0.3g of sodium citrate in 50mL of distilled water as solution B; mix solution A and solution B to make a radiochromic solution, and fill the solution with a size of 10mm×2mm× In a 50mm transparent PET plastic tube, both ends are sealed to make a dosimeter.
[0029] Among the dosimeters produced in the same batch, randomly select a number of dosimeters, and use the silver dichromate dosimeter scale to make a series of color guides with doses of 5kGy, 7kGy, 9kGy, 11kGy, 13kGy, and 15kGy. In this way, the radiochromic dosimeter manufacture complete.
Embodiment 3
[0031] Dissolve Acid Yellow 1g in 100mL distilled water as solution A; 2-methyl-2-(4-morpholinyl)-1-[4-(methylthio)phenyl]-1-propanone 0.2g is dissolved in 5mL ethanol In is solution B; solution A and solution B are mixed to make a radiochromic solution, and the solution is put into a transparent PU plastic tube with an outer diameter of 8mm and a length of 20mm, and the two ends are sealed to make a dosimeter.
[0032] Among the dosimeters produced in the same batch, randomly select multiple dosimeters, and use the silver dichromate dosimeter scale to make a series of color guides with doses of 1kGy, 2kGy, 3kGy, 4kGy, 5kGy, 6kGy, 7 kGy, and 8 kGy. The radiochromic dosimeter is manufactured.
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Abstract
The invention, belonging to the field of radiation chemistry and nuclear technology, discloses a gamma-ray radiochromic solution, comprising the following ingredients: 0.02-1 weight portions of dye, 0-0.5 weight portions of photoinitiator, 0-0.5 weight portions of anti-oxidant, 0-10 weight portions of organic solvent, and the rest sovlent consisting of 100 weight portions of distilled water. The invention further discloses a radiation dosemeter prepared by using the gamma-ray radiochromic solution, comprises a radiochromic device and a colorimetric device. The gamma-ray radiochromic solution and the radiation dosemeter are suitable for large scale industrial irradiation. According to the invention, a test result of the radiation dosemeter is timely and intuitionistic, the radiation dosemeter can guide production on site to guarantee the irradiation quality, the radiation dosemeter can be placed in any position and even in the package of an object being irradiated to prevent pollution; the radiation dosemeter is fit for any object being irradiated, and even can be placed in a liquid or cream object being irradiated; the gamma-ray radiochromic solution is stable under the conditions of room temperature and room light illumination, and has equivalence that is close to the equivalence of the object being irradiated; and the gamma-ray radiochromic solution has the advantages of simple formula and preparation, easy obtainment of raw materials, and low cost, and the precision of the gamma-ray radiochromic solution is suitable for large scale irradiation processing.
Description
technical field [0001] The present invention belongs to the fields of radiation chemistry and nuclear technology. Background technique [0002] Gamma radiation treatment and processing technology is more and more widely used in industrial and agricultural production, including radiation sterilization of food, feed, medical supplies, cosmetics, sanitary products, etc., and radiation modification of polymer materials. In order to use radiation efficiently and accurately, the measurement of radiation dose is particularly important. There are many standards and methods for dosimetry, including ionization, calorimetry, thermoluminescence, and chemical methods. (such as ionization chamber, spectrophotometer, infrared spectrometer, electron spin resonance spectrometer) measurement, and then calculate the radiation dose, which is not intuitive; or the measurement dose is low and the range is small, which is difficult to use for the timely dose of radiation processing monitor. In r...
Claims
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Application Information
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