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activation analysis

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ac·ti·va·tion a·nal·y·sis

the identification and quantification of unknown elements from their characteristic emissions and decay constants after they have been made radioactive by exposure to neutron or charged particle radiation.
Farlex Partner Medical Dictionary © Farlex 2012

neutron activation analysis

A method for identifying and measuring the concentrations of the chemical elements in a large and complex sample of material.

Method
A sample is rendered radioactive by bombarding it with neutrons, charged particles or gamma rays, making the nuclei of the different elements unstable and radioactive, and putting them in a higher energy state. Each of the now-radioactive isotopes in the sample gives off a characteristic signature (e.g., alpha particles, gamma rays), which indicates the type and concentration of the elements in the sample.
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References in periodicals archive
Ahmed, Determination of trace impurities in iron-based alloy using neutron activation analysis, Radiochim.
SHORT COMMUNICATION - Determination of Trace Impurities In High Purity Aluminium Oxide Using INAA
Lee, "Evaluation on chemical neutron activation analysis for trace metals in seawater using magnesium oxide as the preconcentration agent," Journal of Radioanalytical and Nuclear Chemistry, vol.
Determination of Cobalt in Seawater Using Neutron Activation Analysis after Preconcentration by Adsorption onto [gamma]-Mn[O.sub.2] Nanomaterial
Sziklai-Laszlo, "Upgrade of the Budapest neutron activation analysis laboratory," Journal of Radioanalytical and Nuclear Chemistry, vol.
Elemental Characterization of Romanian Crop Medicinal Plants by Neutron Activation Analysis
Lutz, "Instrumental photon activation analysis of atmospheric participate material," Analytical Chemistry, vol.
Determination of interesting toxicological elements in [PM.sub.2.5] by neutron and photon activation analysis
Two techniques were used to determine elemental composition, on the one hand conventional X-ray fluorescence (XRF) which is a semi-quantitative analysis and is only valid for elements heavier than Cl and, on the other, neutron activation analysis (NAA) which is very precise as very low percentages, traces, may be determined.
Composicion y morfologia de cabello humano arqueologico y contemporaneo
Identification of origin of glass by neutron activation analysis in a forensic case, Journal of Forensic Sciences (1970) 15:252-260.
Forensic glass comparison: background information used in data interpretation
This project investigated the ferromagnetic content of monarchs and black swallowtails by Neutron Activation Analysis. Neutron Activation Analysis was used because of its accuracy in measuring low elemental concentrations in samples with low total masses.
Geomagnetic navigation in monarchs and black swallowtails (1)
He concluded that the technology, known as prompt gamma neutron activation analysis, was accurate and durable for measuring the copper content in scrap steel.
Induction Melting Highlighted by Div
A series of experiments employing UV spectrophotometry and Neutron Activation Analysis were done to probe the ability of aluminum to bind to transferrin in the presence of citrate in order to evaluate theoretical predictions.
Analysis of the binding of aluminum to transferrin in the presence of citrate
The tests included chemical, microscopic, microchemical, and microspectroscopic analyses, as well as thin-layer chromatography and neutron activation analysis. The commission experts did note what they thought were traces of paint.
The case of the Shroud: what happens when faith attempts a science project
China will train operating staff, and two others in neutron activation analysis techniques.
No hidden agenda
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