Instrumental neutron activation analysis of the hair of metallurgical workers

Georgescu, Rodica; Pantelica, A.; Sălăgean, M.; Crǎciun, D.; Constantinescu, M.; Constantinescu, O.; Frangopol, Petre T.

doi:10.1007/bf02034628

Cited by 6 publications

(2 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The filings were separated from the liquid by filtration on filter paper. This filter paper with the samples was placed in a Petri dish for drying inside a laminar flow cabinet [20].…”

Section: Methodsmentioning

confidence: 99%

Determination of chemical elements in magnesium-based materials by neutron activation analysis

et al. 2021

View full text Add to dashboard Cite

Over the last decades there was an increasing interest in using magnesium alloys for medical applications due to their biodegradability in the human body, providing a temporary mechanical support and corroding completely after the tissue healing. Although magnesium is a non-toxic element, it is of great importance to evaluate the element concentration, as well as the impurities present in both, pure magnesium and magnesium alloys, as the AZ31. The purpose of this study was to analyze the element composition of these materials using the method of neutron activation analysis (NAA). Standard Reference Materials (SRMs) acquired from National Institute of Standards and Technology (NIST) were analyzed for analytical quality control. Short and long term irradiations were carried out at the IEA-R1 nuclear research reactor and gamma-ray activities induced to the samples and element standard were measured using HPGe detector coupled to a Digital Spectrum Analyzer. The radioisotopes were identified by gamma ray energies and half-life. Concentrations of the elements As, Cr, Cd, Co, Fe, In, La, Mg, Mn, Mo, Na, Sb, V, W and Zn were determined in pure magnesium sample and the Al, As, La, Mg, Mn, Na, Sb and Zn in the AZ31 alloy, calculated by comparative method. The SRMs were analyzed by applying the same experimental conditions used for magnesium-based materials and their results presented good accuracy and precision. Thus, from the measurements obtained in this study it can be concluded that NAA is a suitable method for element determinations in magnesium-based materials providing reliable results.

show abstract

“…The filings were separated from the liquid by filtration on filter paper. This filter paper with the samples was placed in a Petri dish for drying inside a laminar flow cabinet [20].…”

Section: Methodsmentioning

confidence: 99%

Determination of chemical elements in magnesium-based materials by neutron activation analysis

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Hair growth averages between 0.9 and 1.2 cm/month, some differences depending on anatomical location, race, geographical location, age, and sex (Ashraf et al 1990); and there is a relatively large interindividual variability (Batzevich 1995;Nowak 1998;Georgescu et al 1997). However, some considerations must to be taken into account when human hair is used as a clinical sample for trace element determinations.…”

Section: Factors Affecting the Trace Element (Drug Xenobiotics Etc) mentioning

confidence: 98%

Hair Analysis as Method for Determination of Level of Drugs and Pharmaceutical in Human Body: Review of Chromatographic Procedures

Srogi

2006

Analytical Letters

View full text Add to dashboard Cite

Interest in hair analysis as an alternative or complementary approach to urinalysis for drug abuse detection has grown in recent years. Hair analysis can be particularly advantageous for drugs and their enantiomers.More than hundred pharmaceuticals, drugs of abuse agents are reported to be detectable in human and animal hair. This article reviews the analysis of drugs and drug metabolites by chromatographic procedures, including the pretreatment steps, and the extraction methods. The general tendency in the last years, to highly sophisticated techniques gas chromatography -mass spectrometry (GC-MS-NCI), high pressure liquid chromatography -mass spectrometry (HPLC -MS), gas chromatography -mass spectrometry -mass spectrometry (GC-MS-MS) well illustrates this constant fight for sensitivity.

show abstract

Testing for Drugs in Hair – a Review of Chromatographic Procedures

Srogi

2006

Microchim Acta

View full text Add to dashboard Cite

Instrumental neutron activation analysis of the hair of metallurgical workers

Cited by 6 publications

References 13 publications

Determination of chemical elements in magnesium-based materials by neutron activation analysis

Determination of chemical elements in magnesium-based materials by neutron activation analysis

Hair Analysis as Method for Determination of Level of Drugs and Pharmaceutical in Human Body: Review of Chromatographic Procedures

Testing for Drugs in Hair – a Review of Chromatographic Procedures

Contact Info

Product

Resources

About