spectrometry Articles
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Featured Article on Laser Ablation Chemical Analysis – LIBS, LA-ICP-MS/OES, and LAMIS
Laser ablation is a powerful approach to chemical analysis because of its versatility. It has advantages in chemical analysis including direct characterization of solids, no chemical procedure of dissolution, which reduces the risk of contamination or sample loss, analysis of very small samples not separable from solution analysis, and determination of spatial distribution of elemental ...
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Microchemical analysis of selenium in otoliths of two West Virginia fishes captured near mountaintop removal coal mining operations
Otoliths, calcified inner ear structures, were collected from creek chubs (Semotilus atromaculatus) and green sunfish (Lepomis cyanellus) living in mountaintop‐mining‐impacted and reference streams and analyzed for selenium (Se) content using laser ablation inductively coupled mass spectrometry (LA‐ICP‐MS). Significant differences in otolith Se were found between the two fish species. Results ...
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Analyses of trace elements on quartz surfaces in sulfidic mine tailings from Kristineberg (Sweden) a few years after remediation
Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) has been applied to determine the elemental composition of the surface layer, as well as of the first interior layer, of quartz grains from the mine tailings from Kristineberg (northern Sweden) in order to determine concentration gradients between these two layers. The quartz grains were collected from the oxidized and ...
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The role of melano‐macrophage aggregates in the storage of mercury and other metals: An example from yelloweye rockfish (Sebastes ruberrimus)
Melano‐macrophage aggregates, collections of specialized cells of the innate immune system of fish, are considered a general biomarker for contaminant toxicity. To elucidate further the relationship between macrophage aggregates and metals exposure, yelloweye rockfish (Sebastes ruberrimus), a long‐lived species, were sampled from the east and west coasts of Prince of Wales Island, Alaska. ...
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List of 10 Soil Metal Testing Methods
Soil testing has become a must-check item for environmental testing. In recent years, countries around the world have attached great importance to soil testing, which has led to great progress in soil testing technology. At the same time, countries around the world have increased their investment in soil metal testing, using advanced technologies such as spectroscopic analysis technology, ...
By Lifeasible
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What is laser ablation and why you need a nitrogen generator
Laser ablation is becoming a popular technique for direct solid sampling in analytical chemistry. But what exactly is laser ablation and why would you need a nitrogen generator for it? Laser ablation is a process in which a laser beam is used to remove a portion of mass from a sample, usually as a sampling method for isotopic or elemental analysis of a solid sample. The mass from the sampling ...
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TIMS or MC-ICP-MS – which do i need?
So, you have a need for precise isotope ratio measurement of solids, most likely metals, but perhaps you’re early in your career and not yet an expert in the instrumental techniques. You’ve already found out that thermal ionization MS (TIMS) and multi-collector ICP-MS (MC-ICP-MS) are the likely techniques of choice, but which should you choose? I work for Isotopx, a company the ...
By Isotopx Ltd
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