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Acta Pharmacologica Et Toxicologica 1986
Topics: Activation Analysis; Humans; Neutron Activation Analysis; Trace Elements
PubMed: 3776630
DOI: 10.1111/j.1600-0773.1986.tb02831.x -
Analytical Chemistry Jul 1970
Topics: Activation Analysis; Air Pollution; Indiana; Industrial Waste; Microchemistry
PubMed: 5431523
DOI: 10.1021/ac60290a004 -
Biological Trace Element Research 1990A microcomputer-controlled irradiation and measurement system and a microprocessor-controlled sample changer have been installed at the SLOWPOKE-2 Facility at the Royal...
A microcomputer-controlled irradiation and measurement system and a microprocessor-controlled sample changer have been installed at the SLOWPOKE-2 Facility at the Royal Military College of Canada (RMC). These systems can provide the gamut of instrumental neutron activation analysis (INAA) techniques for the analyst. Custom software has been created for system control, data acquisition, and off-line spectral analysis using programs that incorporate Gaussian peak-fitting methods of analysis. The design and use of the equipment is discussed, and the performance is illustrated with results obtained from the analysis of marine sediment and biological reference materials.
Topics: Microcomputers; Neutron Activation Analysis; Radioisotopes; Reference Standards; Software; Trace Elements
PubMed: 1704760
DOI: 10.1007/BF02992658 -
Methods of Biochemical Analysis 1957
Topics: Activation Analysis; Biochemistry; Chemistry Techniques, Analytical; Isotopes
PubMed: 13503677
DOI: 10.1002/9780470110218.ch5 -
Biological Trace Element Research 1990The major developments in the field of nuclear activation analysis, from 1936 to 1989, are discussed. The developments are grouped into five consecutive time periods....
The major developments in the field of nuclear activation analysis, from 1936 to 1989, are discussed. The developments are grouped into five consecutive time periods. The impact of various scientists on the development of the field in the first 35 years is also discussed.
Topics: History, 20th Century; Neutron Activation Analysis
PubMed: 1704707
DOI: 10.1007/BF02992652 -
Orvosi Hetilap Jun 1978
Topics: Activation Analysis
PubMed: 662334
DOI: No ID Found -
Biological Trace Element Research 1990Instrumental neutron activation analysis (INAA) has been applied to multielemental determinations of medicinal extracts obtained from the plants. Cordia Verbenacea DC,...
Instrumental neutron activation analysis (INAA) has been applied to multielemental determinations of medicinal extracts obtained from the plants. Cordia Verbenacea DC, Folidago Microglossa DC, and Petiveria Alliacea. Concentrations of the elements Al, Br, Ca, Cl, Co, Cs, Fe, K, La, Mg, Mn, Na, Rb, Sb, and Zn have been determined in dried extracts of these herbs by short and long irradiations under a thermal neutron flux of 10(11)-10(13) n/cm2s in the IEA-R1 nuclear reactor. The NBS Tea Leaves (1572) and NIES Pepperbush (1) reference materials were analyzed simultaneously with the plant extracts. The results obtained in these analyses have shown a good accuracy and reproducibility of the method. The relative errors and the relative standard deviations were less than 10% for most of the elements analyzed.
Topics: Brazil; Neutron Activation Analysis; Plants, Medicinal; Reference Standards; Trace Elements
PubMed: 1704783
DOI: 10.1007/BF02992731 -
Biological Trace Element Research 1999Medicinal herb preparations prescribed for specific treatment purposes were purchased from markets and were analyzed by instrumental neutron activation analysis with k0...
Medicinal herb preparations prescribed for specific treatment purposes were purchased from markets and were analyzed by instrumental neutron activation analysis with k0 standardization. Then, 500-700 mg of each sample was pelletized under a pressure of six tones and irradiated together with monitors for alpha and neutron flux ratio determinations for about 6 h in a thermal flux of 2.29 x 10(12) n/cm2/s. The accuracy of the method was established by analyzing standard reference materials. Twenty-nine elements, Ag, As, Au, Ba, Br, Ca, Ce, Co, Cr, Cs, Eu, Fe, Hf, K, La, Mn, Mo, Na, Rb, Sb, Sc, Se, Sm, Sr, Th, U, Yb, and Zn, were measured in all the samples, and Hg was detected in some samples, with good accuracy and reproducibility. The concentration of elements determined was found to vary depending on the composition of the herbs used. Although the trend linking the element of the medicinal plants to its curative abilities could not be clearly determined, this study showed that the toxic elements found in the samples were below the levels prescribed by health regulations. Nevertheless, such data are important to understand the pharmacological action and the exact mechanisms of action and formation of active constituents for each medicinal plant and to decide the dosage of the herbs used in the final formulation.
Topics: Neutron Activation Analysis; Phytotherapy; Reproducibility of Results
PubMed: 10676512
DOI: 10.1007/BF02784224 -
Journal - Forensic Science Society Jan 1968
Topics: Activation Analysis; Criminology; Forensic Medicine; Glass
PubMed: 5666504
DOI: 10.1016/s0015-7368(68)70429-1 -
The American Journal of Roentgenology,... Jun 1958
Topics: Blood; Humans; Neutron Activation Analysis
PubMed: 13533684
DOI: No ID Found