Method for measuring radioactivity of radioactive waste
A radioactive substance and radioactive technology, applied in the field of selective pretreatment of chemical analysis, can solve the problems of difficult separation and pretreatment, achieve the effect of reducing the detectable activity and improving the efficiency of radioactivity measurement
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0103] Example 1. Adsorption and electrochemical desorption of iodine using a platinum electrode
[0104] Immerse the platinum electrode without iodine attached in 0.1M NaClO 4 As an adsorbent in the aqueous solution, glassy carbon as a counter electrode and an Ag|AgCl electrode as a reference electrode are also immersed in it to form an electrochemical three-electrode battery. A linear sweep voltammetry experiment was performed in the battery from 0 V to below -0.9 V at a sweep rate of 50 mV / s. Take the platinum electrode out of the electrochemical tank and immerse it in 0.001mM KI, I 2 、CH 3 Add the iodine compound of I to excess water (100 mL), and stir for 30 minutes. Then, the platinum electrode was recovered and placed in an electrochemical cell for linear sweep voltammetry experiments in the same environment. The results of linear sweep voltammetry on the electrode according to the adsorption of iodine compounds are shown in Figure 4 middle.
[0105] refer to ...
Embodiment 2
[0108] Example 2. Adsorption and desorption of iodine using a sponge-like adsorbent
[0109] Dissolved with 0.001mM iodide ion (I - ) in excess water (100 mL), a sponge-like platinum adsorbent comprising platinum-coated sponge-like nickel support was added, and stirred for 30 minutes.
[0110] Then, the spongy platinum adsorbent was recovered, and an electrochemical system with the same working electrode as in Example 1 was constructed. Then, an electric potential is applied to dissociate iodine, which is recovered in a small amount of aqueous solution.
[0111] Using a sponge-like platinum adsorbent, the adsorption / desorption of iodine was carried out several times, and the concentration of iodine was measured using the absorption spectrum and ICP-MS measured thereby, and it is shown in Figure 5 middle. In addition, the concentration of iodide in the aqueous solution according to the frequency of adsorption / desorption is shown in Table 1 below.
[0112] 【Table 1】
[0...
Embodiment 3
[0116] Example 3. Iodine Adsorption Using Platinum Plate Discs and Radiometric Measurements Using a Low Energy Gamma Raymeter
[0117] A small amount of radioactive iodine-129 was added to a beaker filled with 50ml of water, and 0.5ml of sulfuric acid or nitric acid was added to it. A platinum plate disc (a glass disc with platinum coated on it) was placed in a beaker to allow the radioactive iodine to be adsorbed on the platinum plate disc. Then, the platinum plate disc was recovered, washed with distilled water, and the water was removed. Then, the platinum plate disc from which moisture was removed was placed in a low-energy gamma ray apparatus to measure radioactivity, and after the radioactivity measurement, an electrochemical device including a three-electrode system having a platinum plate disc as a working electrode, a glass Carbon was used as the counter electrode and Ag|AgCl as the reference electrode.
[0118] At this point, use a glass membrane grid (for exampl...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to view more - R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap