spectrometer Articles

  • Testing of Pharmaceutical & Cosmetic Raw Materials & Final Product Formulations for CODEX, USP/NF & BP Regulations

    There are STANDARD Guidelines used to define the Identification and Purity of compounds used in Pharmaceutical and Cosmetic formulations, as well as the final Products. These protocols are described in great detail in the various Monographs of the United States and British Pharmacopoeias, the National Formulary (USP/NF and BP), the International FAO/WHO Codex (CODEX) and other Regulatory ...


    By Buck Scientific Inc

  • Synergetic use of TERRA/MODIS imagery and meteorological data for studying aerosol dust events in Cyprus

    This paper presents the results from the analysis of TERRA/Moderate Resolution Imaging Spectrometer (MODIS) images for the detection and mapping of particulate air pollution in Cyprus. For this purpose, a set of selected air pollution events for the year 2002 was used, mainly associated with dust transported over the area from the surrounding deserts. The results depict the potential of the use ...


    By Inderscience Publishers

  • Free White Paper: Technologies for On-Site Positive Material Identification

    Until now there have been two established technologies for Positive Material Identification (PMI) inspection: Handheld X-ray fluorescence spectrometers (HHXRF) Mobile and portable optical emission spectrometers (OES) Oxford Instruments recently launched the mPulse, the world’s first handheld metal analyser based on laser induced breakdown spectroscopy (LIBS). ...


    By Oxford Instruments plc

  • Validation and calibration of a spectroscopic technique for determination of gas plume temperature

    Abstract Results are reported from a continuing program of research into the physics and spectroscopy of heated stack plumes. Simultaneous thermocouple and spectrometer measurements are used to study sideways—directed plumes from an internal combustion engine and a propane-burning plume generator. A previously-reported result, that the ratio of optically thin signals from two CO2 ...


    By D&P Instruments, Inc

  • Quality control put to the test

    X-RAY FLUORESCENCE spectroscopy (XRF) is ideal for quality control as it is non-destructive, requires simplesample preparation, and is very fast and accurate. Alternative techniques often require time-consuming, costly, andpotentially hazardous preparation before measurements can be made. The MiniPal QC is the latest addition to Panalytical’s successful line of MiniPal benchtop XRF ...


    By PANalytical

  • Detection of Low Levels of Organic Species in Seawater

    In this particular experiment, the sensitivity of a Hiden Quadrupole Mass Spectrometer (QMS) to dimethylsulphide was measured Dimethylsulphide (DMS) - chemical formula CH3SCH3- is a naturally produced trace substance, evolved from certain marine micro organisms, such as plankton. Detection of fluctuations in the DMS concentration in seawater therefore gives important information about the ...


    By Hiden Analytical Ltd.

  • Analysis of Ni-, Fe- and Co-based alloys within a ferrous matrix

    Elemental analysis by X-ray fluorescence (XRF) spectrometry is one of the principal methods of process and quality control in the metals industry. However, the matrix corrections needed and the many reference materials required to ensure high quality results has, until now, been a limitation which has been overcome with a new package comprising a wavelength dispersive XRF (WDXRF) spectrometer, ...


    By PANalytical

  • RoHS & WEEE compliance: analysis of polyvinyl chloride (PVC) and acrylonitrile-butadiene styrene (ABS) polymers

    XRF has emerged as an optimal solution for the screening of toxic heavy metals regulated by the EU Directives, RoHS and WEEE. PANalytical's MiniPal 4 RoHS WEEE – an energy-dispersive X-ray fluorescence spectrometer – provides a RoHS/WEEE screening function of the restricted elements. This datasheet describes a straightforward, robust method for the analysis of RoHS elements in two very different ...


    By PANalytical

  • Mixture analysis using reverse searching and non-negative least squares

    The portable even handheld Raman spectrometer can provide adequate spectral resolution for material identification in situ. Raman spectra are information rich but not easy to interpret, especially for the spectra of mixtures. The ability to identify components in the mixture is, therefore, of considerable interest and challenge. In this study, a promising solution for rapid mixture identification ...


    By B&W Tek

  • In-situ investigation of the cathode catalysts for PEM fuel cells using differential electrochemical mass spectrometry

    Differential electrochemical mass spectrometry (DEMS) involves applying a potential across an electrochemical cell and measuring the resulting current while concurrently analyzing gas products with a mass spectrometer. We used DEMS to investigate the mechanism of carbon support corrosion (CSC) in-situ at the cathode of proton exchange membrane fuel cell (PEMFC). The cathode exhaust gases were ...


    By Hiden Analytical Ltd.

  • Influence of local calibration on the quality of online wet weather discharge monitoring: feedback from five international case studies

    This paper reports about experiences gathered from five online monitoring campaigns in the sewer systems of Berlin (Germany), Graz (Austria), Lyon (France) and Bogota (Colombia) using ultraviolet–visible (UV–VIS) spectrometers and turbidimeters. Online probes are useful for the measurement of highly dynamic processes, e.g. combined sewer overflows (CSO), storm events, and river ...


    By IWA Publishing

  • Moisture detection for semi gases via EP-IR Spectroscopy

    Introduction EP-IR is a new technology that provides opportunities for uncharted territories One of these territories is moisture analysis What limit of detection for moisture can be achieved? EP-IRGAS Encoded Photometric-Integrated Real-Time Gas Analysis Solution Incorporates an Aspectrics 128 channel ...


    By CIC Photonics, Inc.

  • Hyperspectral thermal infrared line profiling for mapping surface mineralogy

    Abstract An airborne hyperspectral thermal infrared line profiling spectrometer (TIPS) has been developed by CSIRO and Fugro Airborne Surveys to measure and map surface mineralogies. TIPS is a spectrometer based on an FTIR instrument, recording radiance channel in about 100 channels in the 8 mm to 13 mm wavelength range from contiguous 10 meter pixels along the flightline, at a nominal ...


    By D&P Instruments, Inc

  • Hyphenated techniques as modern detection systems in ion chromatography

    Ion chromatography (IC) with conductivity detection has been successfully used to analyze low-molecular organic compounds such as amines and organic acids, as well as anionic and cationic substances. However, due to current toxicity concerns and the consequently lowered maximum contaminant levels (MCL), analyses in complex matrices require improved sensitivity and selectivity. The coupling of IC ...


    By Metrohm AG

  • Quantitative analysis of iron in flour

    Abstract   A quantitative analysis of Iron in flour via Xenemetrix EDXRF Laboratory Spectrometer System was performed by model EX-3600M. The minimum detection limit for Fe in flour matrix was determined to 0.8 ppm at 3 sigma. Objective  To design an easy method by using EDXRF technique for quick and convenient measurements of Fe in flour at the level ...


    By Xenemetrix Ltd.

  • Content Analysis of Toxic Elements in Soil by Simultaneous ICP

    Contaminated soil not only leads to contamination of untreated drinking water through permeation into river water and rainwater, it adversely affects health when the soil itself is directly ingested as a child puts the ground into a stoma into a play etc. Therefore, assessment of soil toxicity using a defined method is required. I In Japan, the Soil ...

  • EDXRF Analysis of Sulfur and Other Elements in Oil

    The concentrations of sulfur substances in fuel oil, which greatly contribute to air pollution and acid rain, are regulated by law in many countries, and these regulations are becoming stricter with the growing concern about their impact on the environment and the consequences for society. Here, using the easy-to-operate EDX-720 energy dispersive X-ray fluorescence spectrometer, we determined the ...

  • Evolved gas analysis - a high sensitivity study of a solvent of recrystallisation in a pharmaceutical

    Introduction Thermogravimetric Analysis (TGA) of materials is commonly used to provide information on the weight loss as a sample is heated or held isothermally. Pharmaceutical materials often show weight losses associated with the loss of solvent/ water, desolvation or decomposition of the sample. This information is then used to assess the purity and stability of the material and its ...


    By Hiden Analytical Ltd.

  • Degradation of malachite green by dielectric barrier discharge plasma

    Oxidative decomposition of aqueous organic pollutant malachite green (MG) was studied in a dielectric barrier discharge reactor operated under ambient conditions. Total organic carbon content analysis confirmed the mineralization of the pollutant leading to the formation of carbon dioxide, which was confirmed by an infrared analyzer. Typical results indicated that the degradation rate increases ...


    By IWA Publishing

  • Analysis of alternative fuels

    The use of alternative fuels in the cement and building materials industries is becoming increasingly important. Alternative fuels enable cement manufacturers to control production costs and improve environmental performance – two very significant benefits for one of the world’s most energy intensive industries. If international targets for the reduction of CO2 emissions are to be met, then the ...


    By PANalytical

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