Chemical contaminants in water are of concern to all of us. This article reviews the use of mass spectrometry (MS) in environmental and wastewater analysis.
After an introduction to MALDI, DESI and SIMS, the authors describe their main applications in forensics, as well as the advantages provided in terms of sample preparation over approaches routinely used in toxicological laboratories.
TiO2 is widely used as a sunscreen UV filter and as a colouring agent in all types of cosmetic products. TiO2 has recently captured the attention of the scientific community since its safety assessment has been placed again under consideration. Inductively-coupled plasma atomic emission spectrometry (ICP-AES), square wave voltammetry (SWV) and sedimentation field-flow fractionation (SdFFF) are described in this article to characterise and quantify the TiO2 particles inside six commercial foundation creams.
Nuclear magnetic resonance (NMR) spectroscopy is one of the most powerful analytical tools used to probe details of molecular structure and dynamics. It requires very high magnetic fields and, hence, generally uses extremely large, powerful magnets. The advent of small, powerful magnets has allowed much less expensive low resolution NMR instrumentation to be designed, making it feasible to measure commercially important characteristics of dispersion behaviour and performance, including the wetted surface area of particulate suspensions and emulsion droplet size. An important additional practical application is the ability to determine competitive adsorption and/or displacement of polymers and surfactants at interfaces. This article presents a brief overview of these new approaches together with an example of each measurement.
Tea is harvested from the bud, the first leaf and the first three leaves up to a maximum of four leaves. Quality decreases from the bud down as the parts become older. This study looks at the use of NIR spectroscopy to determine optimal production using the harvested material.
- Protein concentration prediction in cell cultures: the next stage in near infrared bioprocess analysis
- Clinical mass spectrometry: a short review
- Development of fibre-optic Raman probes for in vivo diagnosis of upper gastrointestinal cancers
- Investigation of spacecraft outgassing by sensitive mass spectrometry
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- Atomic absorption
- Atomic emission
- Ion mobility
- Laser spectroscopy
- Mass spectrometry
- Near infrared
- NMR ESR EPR
- Related equipment
- RMs and standards
- Sample prep
- Separation science
- Surface analysis
- X-ray spectrometry