Determination of lead by graphite furnace atomic absorption spectrometry with argon-hydrogen as the purge gas using low-temperature atomisation

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DOI 10.1039/JA9860100131
Impact Factor 4.023
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Abstract

A method is described for the determination of lead in environmental samples by graphite furnace atomic absorption spectrometry with argon-hydrogen as the purge gas using low-temperature atomisation. The addition of hydrogen to argon helps to reduce the interference caused by the matrix in the sample, and a significant enhancement of the peak absorbance was achieved for lead in environmental sample analysis. The suppression of the lead atomic signal for a real sample in argon was probably due to the presence of halide or perchlorate in the sample. The decrease in the level of interference when hydrogen was added to argon may be ascribed to the formation of HCl, which has a relatively high dissociation constant. The analytical results obtained for lead in environmental reference materials indicate that the method is accurate and reliable.

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Journal of Analytical Atomic Spectrometry

Journal of Analytical Atomic Spectrometry
CiteScore: 6.2
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The Journal of Analytical Atomic Spectrometry (JAAS) is the central journal for publishing innovative research on fundamentals, instrumentation, and methods in the determination, speciation and isotopic analysis of (trace) elements within all fields of application. This includes, but is not restricted to, the most recent progress, developments and achievements in all forms of atomic and elemental detection, isotope ratio determination, molecular analysis, plasma-based analysis and X-ray techniques. The journal welcomes full papers, communications, technical notes, critical and tutorial review articles, editorials, and comments, in addition to the Atomic Spectrometry Updates (ASU) literature reviews that are prepared by an expert panel. Submissions are welcome in the following areas, but note this list reflects the current scope and authors are strongly encouraged to contact the Editorial team if they believe that their work offers potentially new and emerging research relevant to the journal remit: Fundamental studies in the following. New and existing sources for atomic emission, absorption, fluorescence and mass spectrometry and those that provide both atomic and molecular information Sample introduction techniques for solids, liquids, gases Improvements in sensitivity, selectivity, precision, accuracy and/or robustness Isotope ratio measurements, including techniques for improving precision and mass bias correction Single channel and multichannel simultaneous detection systems Chemometrics, statistics, calibration techniques and internal standardisation Theoretical and numerical modelling of fundamental processes related to all of the above methodologies Novel or improved methodologies in areas of application including, but not limited to the following. Biosciences, including elemental, speciation and isotopic analysis in biological systems, immunoassays based on metal-labeled antibodies, bio-imaging, and nanoparticle toxicology Geochemistry Environmental science Materials science, including engineered nanoparticles and quantum dots Metrology, including reference materials Forensic analysis Food and agricultural sciences Energy Archaeometry Molecular analysis. Molecular sources for elemental and isotopic analysis Atomic sources for molecular analysis Atomic and molecular techniques simultaneously used for complementary chemical information All contributions are judged on originality and quality of scientific content, and appropriateness of length to content of new science.

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