Determination of 14C in Volcanic Gas By Accelerator Mass Spectrometry
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چکیده
منابع مشابه
Perchloroethylene Analysis by Chemical Oxidation and Determination of Intermediate Products by Gas Chromatography, Mass Spectrometry
Abstract Background and Objective: Perchloroethylene (PCE) is a chlorinated hydrocarbon used as a solvent in many industrial processes. In contaminated water and soil a great deal of PCE is found. This study aimed to determine the rate of decomposition of PCE occurred after advanced oxidation. Material and Methods: In this descriptive-analytic study conducted (2011) in public health faculty...
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There are three principal isotopes of carbon which occur naturally C, C (both stable) and C (unstable or radioactive). These isotopes are present in the following amounts C 98.89%, C 1.11%, and C 0.00000000010%. Thus, one carbon-14 atom exists in nature for every 1,000,000,000,000 or (1 in a trillion) carbon-12 atoms in living material. The radiocarbon method is based on the rate of decay of th...
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The United States Public Health Service Substance Abuse and Mental Health Services Administration is alerting medical professionals that a substantial percentage of cocaine imported into the United States is adulterated with levamisole, a veterinary pharmaceutical that can cause blood cell disorders such as severe neutropenia and agranulocytosis. Levamisole HCl is the active ingredient in a num...
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Gas chromatography coupled to mass spectrometry in negative chemical ionization (NCI) 11 mode has been applied to the quantification and reliable identification of polybrominated 12 diphenyl ethers (PBDEs) in animal and vegetable samples from aquaculture activities. 13 Matrices analyzed included fish fillet, fish feed, fish oil and linseed oil, which their fat content 14 ranged from 5 to 100%. ...
متن کاملDetermination of ifosfamide by gas chromatography-mass spectrometry
Ifosfamtde, an oxazaphosphonne, IS thermally stable dunng elutton m gas chromatography (GC) at temperatures above 2OO”C, m contrast to tts structural Isomer cyclophosphamrde. Both 2.65~gm and 0.32~pm OV-1 columns were effrctent for GC of tfosfamtde wrthout derivatmation. Mass spectrometry (MS), showed that Intact tfosfamrde was eluted without interference from naturally occurring metabohtes in ...
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ژورنال
عنوان ژورنال: Radiocarbon
سال: 2005
ISSN: 0033-8222,1945-5755
DOI: 10.1017/s0033822200019718