The Chemical Analysis Service allows the determination of major, minor and trace elements in samples from any scientific-technological area.
To guarantee reliable measurements and that the equipment is in optimal conditions, periodic calibrations and verifications are carried out and a safety criterion is chosen that consists of rejecting any verification whose tolerance is less than or equal to 10%.
Measurements
- ICP-OES: The ICP technique allows the quantitative and qualitative determination of metals, metalloids and some non-metallic elements, in a wide variety of samples, from a solution.
- Elemental Analysis: Elemental analysis CHNS, also known as organic elemental analysis or elemental microanalysis, allows to measure the quantity of C, H, N and S in a sample. It is a technique widely used in the quality control of different compounds (organic, inorganic, organometallic compounds, polymers, catalysts...). It is very useful for determining the purity and homogeneity of a compound and calculating its empirical formula
Equipment:
- Inductively Coupled Plasma (ICP) Atomic Emission Spectrometer PERKIN ELMER mod. AVIO 220 MAX
It has dual automatic observation of the plasma (Axial and Radial) The measurement in axial mode allows reaching the lowest detection limits (ppb depending on the element and type of sample) while with the radial mode the range of measurement concentrations is much more high. The equipment covers a wide spectral range between UV and Visible (160-900nm). It has a double monochromator optical system, with a wide response throughout the spectral range, but especially high in the UV zone.
Measurements are made at two wavelengths to detect possible spectral interference
- TruSpec Micro Elemental Determinator CHN/CHNS LECO
TruSpec Micro CHNS equipment burns the sample in a high temperature furnace, which cause the sample to combust. This combustion converts carbon in CO2, hydrogen in H2O, nitrogen in N2 and sulfur in SO2. These gases are swept with helium and detected by independent IR cells, this allows a simultaneous measurement of C, H and S. N is measured using a thermal conductivity detection system.
Allowed samples
- ICP-OES: ICP-OES allows the determination of major, minor and traces elements in samples from any scientific-technological area
The minimum sample volume must be 10ml (maximum two elements). For measurements of more than two elements consult the laboratory.
The samples must be well dissolved, without suspended particles or precipitates.
The pH of the samples must be slightly acidic, using a maximum of 30% concentrated HCl or 30% concentrated HNO3
Samples are not allowed on HF. - Elemental analysis: All types of samples such as composites, algae, nanoparticles, polymers, graphene or biomaterials, among others, are analyzed.
Samples must be properly packaged and labeled. In each sample, the identification code must appear clearly, visibly and indelibly written, and must coincide with the code designated in the analysis request.
Depending on the composition and toxicity of the samples, the service reserves the right to decline the analysis.