Application Notes

In this application note, we evaluate the effectiveness of surface enhanced Raman spectroscopy (SERS) to measure trace levels of imidacloprid, one of a class of insecticides linked to honeybee loss.

Recently, the compact MAGPRO’s maximum voltage was increased from 60 kV to 70 kV while maintaining the same size profile. This article highlights the advantages of 70 kV excitation of cadmium, an element of interest for Restriction of Hazardous Substances Directive (RoHS), at parts per million (ppm) levels.

Single Reaction Chamber (SRC) microwave digestion allows for simultaneous digestion of up to 15 different sample types at temperatures as high as 300°C, greatly streamlining the sample preparation process.

It is only in the last two decades that Raman spectroscopy has begun to realize its potential as an almost universally applicable analytical technique from materials and life sciences applications to point of care analysis. This is primarily thanks to the availability of compact laser sources, high sensitivity cameras and high resolution compact spectrometers. In this application note the use of a stable high power NIR 785 nm laser is shown to be critical in achieving high time resolution and high signal to noise ratios while allowing for both fast and slow processes to be captured simultaneously.

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UV/Visible Spectrophotometry can be used to monitor the thermal denaturation of DNA as the sample is heated allowing determination of the DNA melt temperature, tm, and ultimately the %G-C content.

Discover how geoscientists use Ocean Optics optical oxygen sensors for reaction kinetics studies of pyrite oxidation, which is often linked to environmental issues such as remediation monitoring in aquifers.

The EPA has established a maximum contaminant level of nitrate-nitrogen in potable water of 10ppm. This application presents results of UV-Vis analysis of nitrate concentrations in water samples, showing that the manual colorimetric method is suitable for analysis of nitrate contamination in water systems.

BaySpec's OCI series of hyperspectral imagers represent a new class of imaging sensors covering the 400-1700nm spectral region and ranging from 8 bands to 220 spectral bands.

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Spectral Systems has developed its Diamond XP-BBAR™ coating with spectral performance. The SNR is about 30% better through most of the analysis region of a typical FT-IR instrument.

Libraries of pre-computed ATR-FTIR mixture spectra and conventional ATR-FTIR polymer spectra were used to rapidly identify three major components from an ATR-FTIR spectrum of a sample labeled “EVA”.

Limestone is widely used as the main ingredient in cement and mortar, and as an aggregate in concrete and asphalt for building roads. It iis also used as a soil conditioner and is the raw material for making quick lime and slaked lime. During mining and processing operations, limestone composition must be monitored and controlled to ensure proper quality and characteristics are achieved for a variety of products. This application note demonstrates the measurement of carbonates and major oxides in high calcium limestone by EDXRF using empirical calibration.

This application note describes the method for preparation of four large baby food samples by microwave digestion using a minimal acid volume. Analysis by ICP-OES shows successful digestion.