Analytical Chemistry Articles

  • EPA Issues FIFRA SAP Minutes on EPA Proposal to Use Biomonitoring Data to Derive a PoD for Chlorpyrifos

    On July 20, 2016, the U.S. Environmental Protection Agency (EPA) issued a memorandum attaching minutes from the April 19-21, 2016, FIFRA Scientific Advisory Panel (SAP) meeting, Transmittal of Meeting Minutes of the April 19-21, 2016 Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) ...


    By Bergeson & Campbell, P.C.

  • pH measurement: Six technical tips

    The pH value is one of the most important and therefore also one of the most frequently measured quantities in analytical chemistry. Sometimes, a simple pH test strip is sufficient for making a rapid check; precise pH meters are, however, required whenever accurate measuring results are needed. Such a pH meter is available in nearly every laboratory and is generally ready for use at a moment's ...


    By Metrohm AG

  • Predicted and observed therapeutic dose exceedances of ionizable pharmaceuticals in fish plasma from urban coastal systems

    Instream flows of the rapidly urbanizing watersheds and estuaries of the Gulf of Mexico in Texas (USA) are increasingly dominated by reclaimed waters. Though ionizable pharmaceuticals have received increasing attention in freshwaters, many research questions remain unanswered, particularly in tidally influenced urban coastal systems, which experience significant spatiotemporal variability in ...


    By John Wiley & Sons, Ltd.

  • International scientists' priorities for research on pharmaceuticals and personal care products in the environment

    Pharmaceuticals and personal care products (PPCPs) are widely discharged into the environment via diverse pathways. The effects of PPCPs in the environment have potentially important human and ecosystem health implications, so credible, salient, and legitimate scientific evidence is needed to inform regulatory and policy responses that address potential risks. A recent 'big questions' exercise ...


    By John Wiley & Sons, Ltd.

  • Issues and challenges with oil toxicity data and implications for their use in decision making: A quantitative review

    Aquatic toxicity considerations are part of the net environmental benefit analysis and approval decision process on the use of dispersants in the event of an offshore oil spill. Substantial information is available on the acute toxicity of physically and chemically dispersed oil to a diverse subset of aquatic species generated under controlled laboratory conditions. However, most information ...


    By John Wiley & Sons, Ltd.

  • Building analytical competence for geoscience students through use of Raman spectroscopy

    Introduction: Traditionally, a geologist's analytical toolkit consisted of a hand lens, rock hammer, acid bottle, magnet, and perhaps a polarizing light microscope back in the laboratory. In geoscience professions, these tools are increasingly being supplemented by field and laboratory instrumentation that utilizes spectroscopy. The availability of newly-developed, lower-priced ...


    By B&W Tek

  • Online Access to the Annual Book of ASTM Standards

    The Most Current Documents at Your Fingertips Online access to individual volumes of the Annual Book of ASTM Standards means immediate access to the most updated versions of ASTM International standards. Whether concrete or metals, construction or petroleum, environmental or consumer, and whether it’s the ASTM member virtual volume or other online subscription, BOS volumes online ...


    By ASTM International

  • The automotive sector`s information challenge

    Few industries face the mounting challenges and scrutiny of expanding environmental compliance requirements, ecological mandates, consumer expectations, and NGO watch groups as much as the automotive industry. The entire supply chain for the automotive industry is being affected by legislation from the EU end-of-life vehicles (ELVs) Directive that addresses the recycling, reuse and recovery of ...


    By 3E Company

  • Comparison of EN 14078 and ASTM D7371 infrared biodiesel methods

    Infrared (IR) analysis is the most widely used measurement technology for measuring biodiesel in diesel. Both EN 14078 and ASTM D7371 methods use infrared as the analytical method and more specifically FTIR (Fourier Transform Infrared) spectroscopy. Infrared is a common spectroscopic technique used for quantitative and qualitative analysis. In the biodiesel measurement, the fatty acid methyl ...


    By Spectro Scientific

  • EDXRF Analysis of Lead, Cadmium, Silver, Copper in Lead-Free Solder Materials

    X-ray fluorescence analysis can be used to quickly and easily analyze samples in solid, powder, and liquid states nondestructively, and is therefore widely used as a screening technique for compliance with the RoHS/ELV directives. A large amount of lead-free solder is used for surface-mount circuit boards. Here we evaluated the sensitivity of analysis of Pb, Cd, Ag, and Cu in lead-free solder ...

  • Evaluation of Indian input to the international nuclear information system database

    The study is aimed at analysing the INIS bibliographic records of publications in India during the period 2000-2008. The analysis includes the inputting trend, time-lag, contributing journals, country collaboration, content analysis through the classification and keywords. India has a total number of 14,697 records input to the database with an yearly average of 1631 records. The timeliness of ...


    By Inderscience Publishers

  • Solutions - Covering analytical methods and practices

    A smarter way to take a temperature A Northern California lab automates data- gathering and hands the tracking responsibility over to a computer François Rodigari and Kenneth E. Osborn One of many things that environmental laboratories must do is to track and document the temperatures of the laboratory's incubators and refrigerators. This means that the thermometers used to ...


    By Horizon Technology, Inc.

  • Chemical Pollutants in Water Emerge

    Recent advances in contaminant identification methodologies, sampling instrumentation, and analytical chemistry have caused an explosion of knowledge about the presence of previously undetected organic micropollutants. While it doesn’t follow that the mere presence of chemical contaminants results in harm, public health experts, regulators, and others aren’t sitting idly ...


    By Acta Group

  • Hydrophilic monolayer-protected gold nanoparticles and their functionalisation with fluorescent chromophores

    The efficient implementation of metal nanoparticles in bioanalytical detection schemes, biological imaging and phototherapy requires these particles to be stable against aggregation and chemical desintegration. The functionalisation of these particles with specific (bio)molecular units is a further necessity. These requirements may be met by covering the particle surface with self-assembled ...


    By Inderscience Publishers

  • Membrane chemical cleaning: from art to science

    Membrane chemical cleaning is an integral part of operation for micro- and ultrafiltration systems in the water industry and has significant impact on process operations. However, this issue has not been adequately addressed primarily for two reasons: 1) cleaning protocols are typically recommended from membrane manufacturers and some cleaners are proprietary; 2) the issues of membrane fouling ...


    By Pall Corporation

  • Differentiating Polychlorinated Biphenyls (PCB’s) by GC / FID / ECD

    The analytical chemistry of PCB’s is rigorous, demanding the highest quality in sample preparation and analytical technique. Insufficient sample extraction and inappropriate methods of sample clean-up are the most common sources of error in PCB analysis, which causes significant interference in the chromatography. However, even in relatively clean samples the problem remains to confidently ...


    By Buck Scientific Inc

  • The role of measurement uncertainty in doping analysis

    The determination of measurement uncertainty is a critical issue in all fields of experimental science; its importance becomes maximal in the specific case of forensic analytical chemistry (including doping analysis), where uncertainty has not only to be calculated with precision, but it also has to be both small and reliable enough to support effective decision making. This contribution gives a ...


    By Inderscience Publishers

  • Integrated Environmental Site Characterization and Analysis: EQuIS in the Military (PDF)

    The seamless integration of subsurface environmental geology and analytical chemistry data with the latest tools and technology for data management and analysis make site characterization and investigation more efficient than ever before. EarthSoft’s Environmental Quality Information System—EQuIS—has been chosen by many military agencies and organizations for the management of analytical ...


    By EarthSoft, Inc

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