Spectroscopy and Elemental Analysis

Spectroscopy and Elemental Analysis:

Spectroscopy technique is based on light interacting with the components. When a light rays impact compound, some part absorbing and remaining is reflected. Light is an electromagnetic radiation and moves the atoms of sample from one energy state to another by absorption or emitting of light. The light wavelength range used in spectroscopy varies from infra-red (IR), visible and ultra-violet (UV). There is a wide range of analyzing methods based on this technique which are suitable for both qualitative and quantitative analysis of samples. Elemental analysis is referring to the methods for determination of elemental composition and quantification in a sample.

- Atomic Absorption Spectroscopy (AAS)
- Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES)
- X-ray fluorescence Spectroscopy (XRF)
- Optical emission spectroscopy (OES)
- Ultraviolet-Visible Spectrophotometry (UV-Vis)
- Fluorescence spectroscopy (FLR)
- Fourier Transform Infrared Spectroscopy (FTIR)

Optical emission spectroscopy (OES):

In the optical emission spectroscopy (OES) technology, atoms in a sample are excited by energy that comes from a spark formed between sample and electrode.
The energy of the spark causes the electrons in the sample to emit light which is converted into a spectral pattern. By measuring the intensity of the peaks in this spectrum, OES analysers identify the quality and quantity of the material composition with uncompromising accuracy. They are ideal for high performance analysis of alloyed and trace elements, nitrogen analysis in duplex steels.
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Atomic Absorption Spectroscopy (AAS):

Atomic absorption spectroscopy is quantitative analyzing system, in the technique basically samples is atomized by heating in two methods: flame and furnace. The generated free gaseous atoms are usually in the ground state and will be excited by directing a light with a definite wavelength though the free atoms. The light source in the method is known as a hollow cathode lamp and emits a light with selective wavelength which absorbed by a particular element. Concentration of the specific element has a linear relation with this absorbance. Both Flame and furnace technique are widely used in different fields although the flame method is relatively more simple and low cost.

Atomic Absorption system with flame and/or furnace and also equipped with wide range of accessories like VGA is available in our stock and ready for immediate delivery. Also there is a huge list of spare parts and different hollow cathode lamps to support our customers. Please contact us for further information.

Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES):

ICP-OES is an elemental analyzing system suitable for simultaneous trace determination of multiple elements in a sample. This technique is based on emission of elements which are excited in a plasma condition. The low matrix interference effect and high sample throughput make ICP-OES favorable elemental analyzing system in different fields like: Environmental testing, Minerals, Glass and ceramics, Food and drinks, Forensic laboratories and so on. The method generally is suitable for trace quantitative and qualitative analysis of all metals, although the samples need to be dissolved into an aqueous matrix.

Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) is available in our stock and ready for immediate delivery. Also we have a huge list of spare parts to support our customers. Pleasecontact us for further information.

X-ray Fluorescence Spectroscopy (XRF):

X-ray fluorescence is an analytical technique using X-ray to excite the sample and obtains information to determine its elemental composition. X-ray is a very short wavelength radiation with high energy which can easily passes through materials. In this method the sample is irradiated by X-ray which interacts by the element in sample and generates a fluorescent X-ray. The produced fluorescent X-ray is characteristic of the element atoms and intensity is dependent on the amount of the element in sample. XRF is a non-destructively and fast characterization elemental analysis system which have a wide range of use in different industries and quality control includes environmental analysis, geology, mining, metallurgy, electronics, forensics, archaeology and so on.

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Ultraviolet-Visible Spectrophotometry (UV-Vis):

Ultraviolet and visible spectrometers are a versatile analyzing system almost using in all modern day laboratories. The method is the most common way in quantitative analyzing of an in solution because of its accuracy, simplicity and cost-effectiveness. In brief, when a light direct through a sample including absorbing component in UV-Vis region, a part of molecules called “chromophores” absorb light. These systems calculate the absorbance (A) by measuring a ratio called “transmittance” and using Beer-Lambert law formula (A=log10(Io/I)) . This ratio is the intensity of light directed through a sample called “I” in compare with the intensity of light before it passes through sample of interest “Io”.

Different models of Ultraviolet-Visible Spectrophotometry (UV-Vis) systems (real double beam model and cost effective dual beam models) for routine and research laboratory works is available in our stock and ready for immediate delivery. Please contact [link to contact page]us for further information.

Fluorescence spectroscopy (FLR):

Fluorescence Spectroscopy is an important high sensitive and selective analyzing method for compounds which are able to emit florescent radiation (usually aromatic compounds). This technique has wide applications in different fields of science like: medical, biochemical, chemical research.

The method is based on exciting a fluorescent capable species (fluorophore) into a higher electronic state by exposing sample into an incident photo and then emitting fluorescence signals while fluorophore goes to grand state.

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Fourier Transform Infrared Spectroscopy (FTIR):

Fourier Transform Infrared Spectroscopy is a popular method of infrared spectroscopy for qualitative and quantitative investigation of samples. This method is a non-destructive technique using to identify unknown species and determine amount of components in a sample in different fields from quality assurance analyzing in industries to research applications . In this method an IR radiation is directed through sample, a part of this radiation absorbing by sample and rest is transmitted. The spectra pattern created by this absorption/ transition is unique for each molecule and usually called molecular fingerprint. Finally operating software compares this IR spectrum with the known entries in an IR spectrum library to find target

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