ELEMENTAL ANALYSIS
Elemental analyses aim to determine the elements in a given sample and their appearance proportion. They are an important parameter for quality control and product safety assurance.
Several methods can be used, and the most appropriate choice depends on the material and criteria specific to each sector.
NanoBusiness offers the following analyses:
ELEMENTAL ANALYSIS (CHN)
It aims to define the percentages of carbon, hydrogen and nitrogen in solid or liquid state samples. The method consists in subjecting the substances to combustion in an atmosphere of pure oxygen, and then quantifying the gases resulting from this event in a thermal conductivity detector. [[top]
X-RAY FLUORESCENCE (XRF)
Fast, non-destructive, and highly accurate, X-Ray Fluorescence can classify every component in a crystalline sample. In this method, X-rays are used to excite the material and cause the emission of rays with the energy characteristic of the existing elements, enabling their identification. [[top]
ATOMIC ABSORPTION SPECTROMETRY (AAS)
It is based on the absorption of radiation by free atoms in the gaseous state, and can determine the presence of metals, semi-metals and some non- metals in a wide variety of samples. In this method, the most used atomizers are the flame, indicated for elemental analyses with mg/L concentrations, and the graphite tube, indicated for determinations of low concentrations (μg/L). [[top]
INDUCTIVELY COUPLED PLASMA (ICP) ATOMIC EMISSION SPECTROMETRY
The substance is broken down into atoms through the plasma, and the results are measured from the emission of visible or ultraviolet radiation. It has advantages such as low chemical interference and a radiation detection system that allows to determine, in a single sample and quickly, various elements. [[top]
INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY (ICP-MS)
It allows the detection of metals and numerous non-metals when they are in very low concentrations. While the samples are ionized with the inductively coupled plasma, the resulting ions are separated and quantified using the mass spectrometer.
Its advantage consists in the ability of multi-elemental and isotopic analyses, combined with speed, precision and high sensitivity. [[top]