Hydride generation atomic absorption determination of arsenic in marine sediments, tissues and sea water with in situ concentration in a graphite furnace
文献信息
Methods are described for the determination of total As in sea water and in marine tissues and sediments based on the generation of AsH3 using NaBH4 with its subsequent trapping in a graphite furnace at 600 °C. Calibration is achieved with a simple aqueous calibration graph having a sensitivity of 0.18 ± 0.03 A ng–1 and yields an absolute detection limit of 40 pg. Sample volumes of 10–500 µl produce total method concentration detection limits (3σ blank) of 60 pg g–1 in sea water, 0.2 µg g–1 in sediments and 0.15 µg g–1 in tissues. Corresponding precisions of 2–3% are typical for analyses of these samples. Results are reported for the determination of As in a suite of marine reference materials.
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Journal of Analytical Atomic Spectrometry

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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