BAIJIAN - Third party testing organization
Baijia.net specializes in the detection of technetium elements、 and our platform has established testing institutions that cover the entire testing industry. Online one-on-one service. The test report is delivered on time and with good quality、 and you can enjoy the report delivery service. On the Baijian platform、 customers can complete the inspection process online from ordering services、 submitting commission information、 and finally paying the inspection fee、 without leaving the house. Next、 I will briefly introduce the detection standards and process of Baijia.net for technetium element detection
Detection range of technetium element
technetium element、 soil technetium、 radioactive technetium、 metal technetium、 electronic technetium、 encapsulated technetium、 etc
Technetium element detection items: Technetium detection
Technetium element detection standard
GB/T 13172-2009 Fissile Molybdenum 99 Technetium 99m Chromatograph Generator
EJ/T 793-1993 Medical gel Technetium [99mTc] Generator
EJ/T 948-1995 Determination of Technetium-99 in Uranium Hexafluoride
ASTM C1387-2014 Determination guide of Technetium-99 in soil
ASTM C1539-2008 (2014) Test Method for Determination of Technetium 99 in Uranium Hexafluoride by Liquid Scintillation Counting
ASTM D7168-2011 Solid Phase Extraction Disk Method for Determination of Technetium in Water
Technetium is the first element prepared manually、 mainly derived from uranium fission products in reactors. By the early 1980s、 no naturally occurring technetium had been found on Earth. Metal technetium can be obtained by reducing technetium sulfide (Tc2S7) or ammonium pertechnetate with hydrogen at 500-600 ℃. Electrolysis of ammonium pertechnetate in sulfuric acid solution can also precipitate metal technetium. The properties of technetium are similar to that of the homologous element rhenium. At high temperatures、 technetium reacts with oxygen to form a volatile oxide、 Tc2O7. The common isotope Tc-97 has a half-life of 2.6 million years and can be used for preparation β Ray standard source. A small amount (approximately 5 × Ammonium pertechnetate (10-5mol) can significantly slow down the corrosion of steel. Technetium and technetium molybdenum alloys have good superconducting properties. Before 1960、 technetium could only be produced in small quantities、 with prices as high as 2800 US dollars per gram; By the late 1970s、 production in the kilogram scale was already possible、 and the price had dropped to below $60 per gram. Technetium has now reached a yield of tons、 extracted from fission products of nuclear fuel. Metal technetium is antioxidant and has low solubility in acids、 making it suitable as a anti-corrosion material for atomic energy industrial equipment. The metal is silver white、 but usually obtained as a gray powder. Slow loss of luster in humid air、 combustion in oxygen、 soluble in nitric acid and sulfuric acid. Technetium is the lightest known chemical element on Earth without stable isotopes
Industrial use:
Because the isotope Tc-97 has a long half-life of 2.6 million years、 it is used for chemical research.
. Perchlorate is a good corrosion inhibitor for steel. Technetium is used as a tracer in metallurgy、 as well as in low-temperature chemistry and anti-corrosion products. It is also used for nuclear fuel burnup determination.Medical use:
Technetium 99m、 an unstable isotope with a very short half-life of Technetium、 is the most widely used medical nuclide in nuclear medicine clinical diagnosis. It is commonly used as the pinyin for Technetium (Tc-99m) pyrophosphate injection. A radioactive imaging agent labeled with 99Tcm for diagnosing organ diseases and functions. The 99TcmO4- was obtained by rinsing the 99Mo-99Tcm generator with physiological saline、 which was used for thyroid imaging. But in most cases、 reducing agents are used to reduce to+1、+3、+4、 and+5 valence ions and react with compounds containing donor atoms such as O、 N、 S、 and P to produce radioactive drugs. 99Tcm radiopharmaceuticals are not only used for state image diagnosis、 but also for functional (such as brain、 myocardium、 liver function、 etc.) diagnosis、 accounting for about 85% of diagnostic radioimaging agents. They can be used for diagnosing diseases such as brain、 myocardium、 tumors、 and almost all organ diseases&Nbsp
The testing institutions established by BAIJIAN cover the entire testing industry. Online one-on-one service. The inspection report is delivered on time and with good quality、 and customers can enjoy the report delivery service. On the Baijian platform、 customers can complete the inspection process online from ordering services to submitting commission information to finally paying the inspection fee. They don't need to go out to complete the inspection process. The report was delivered on time and with good quality. The platform is committed to providing testing services for enterprises and individuals. It uses Internet+testing e-commerce to provide customers with diversified testing services
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific、 fair、 and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsinspection and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered、 meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing、 with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle、 low cost、 and attentive service 7. Possess authoritative qualifications such as CMA、 CNAS、 CAL、 etc 8. The testing report is authoritative and effective、 and is generally used in China