![]() In this paper we briefly describe the principles of atomic absorption spectrometry ( AAS) and the basic hardware components necessary to make measurements of analyte concentrations. The role of atomic absorption spectrometry in geochemical exploration ![]() Using an automated instrument incorporating combustion, preconcentration by amalgamation with gold, and atomic absorption spectrometry ( AAS), mill.ĬOMPREHENSIVE ANALYSIS OF BIOLOGICALLY RELEVANT ARSENICALS BY PH-SELECTIVE HYDRIDE GENERATION-ATOMIC ABSORPTION SPECTROMETRYĪ method based on pH-selective generation and separation of arsines is commonly used for analysis of inorganic, methylated, and dimethylated trivalent and pentavalent arsenicals by hydride generation-atomic absorption spectrometry (HG- AAS). All rights reserved.ĭETERMINATION OF TOTAL MERCURY IN FISH TISSUES USING PYROLYSIS ATOMIC ABSORPTION SPECTROMETRY WITH GOLD AMALGAMATIONĪ simple and rapid procedure for measuring total mercury in fish tissues is evaluated andĬompared with conventional techniques. Finally, the use of the TDA- AAS can be considered instead of the ICP-MS in hair analysis in order to reduce sample manipulation with minor risk of contamination, less time consuming due to the absence of the digestion step and cheaper analyses. Both techniques satisfied internal performance requirements and the parameters for method validation resulting sensitive, precise and reliable. The two techniques presented results with a good coefficient of correlation (r=0.94) despite different operative ranges and method limits. Results indicated that the two data sets were fully comparable (median TDA- AAS, 475ngg -1 ICP-MS, 437ngg -1 ) and were not statistically different (Mann-Whitney test p=0.44). After the washing procedure to minimize the external contamination, from each hair sample two aliquots were taken the first was used for direct analysis of Hg by TDA- AAS and the second was digested for Hg determination by the ICP-MS. The aim of the study was to compare the TDA- AAS with the ICP-MS in the Hg quantification in human hair. Numerous analytical methods are available for total Hg analysis in human hair, including cold vapour atomic fluorescence spectrometry (CV-AFS), inductively coupled plasma mass spectrometry (ICP-MS) and thermal decomposition amalgamation atomic absorption spectrometry (TDA- AAS). The most toxic form, i.e., methylmercury (MeHg), is mostly excreted through human hair. Mercury is a heavy metal that causes serious health problems in exposed subjects. Both IRMS and AAS results suggest a mixed diet including C3 plant food and herbivore animals, consistent with archaeological indications.ĭetermination of mercury in hair: Comparison between gold amalgamation-atomic absorption spectrometry and mass spectrometry.ĭomanico, Francesco Forte, Giovanni Majorani, Costanza Senofonte, Oreste Petrucci, Francesco Pezzi, Vincenzo Alimonti, Alessandro A reliable technique has been used to extract and separate the inorganic and organic fractions of the bone remains. Atomic Absorption Spectrometry ( AAS) was used to extract information about the concentration of Sr, Zn, Ca elements in the bone inorganic fraction, whilst stable isotope ratio measurements (IRMS) were carried out on bone collagen to obtain the delta13C and delta15N. This time span was confirmed by 14C dating obtained using Accelerator Mass Spectrometry (AMS) on one bone sample from each site. Two different areas were investigated, named Library and Sant' Antonio, with a total of 44 tombs containing human skeletal remains, ranging in age from the 8th to the 3rd century B.C. Human bones recovered from the archaeological site of Pontecagnano (Salerno, Italy) have been studied to reconstruct the diet of an Etrurian population. Scarabino, Carla Lubritto, Carmine Proto, Antonio Rubino, Mauro Fiengo, Gilda Marzaioli, Fabio Passariello, Isabella Busiello, Gaetano Fortunato, Antonietta Alfano, Davide Sabbarese, Carlo Rogalla, Detlef De Cesare, Nicola d'Onofrio, Antonio Terrasi, Filippo Paleodiet characterisation of an Etrurian population of Pontecagnano (Italy) by Isotope Ratio Mass Spectrometry (IRMS) and Atomic Absorption Spectrometry ( AAS)(#).
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