MICROANALYSIS
Technical Supervisor: Mª Teresa Vila
The Microanalysis Service provides determination of carbon, hydrogen, nitrogen and sulphur (C, H, N, S) and halogens present in a wide range of organic and inorganic compounds.
This Service offers benefits and support to the research groups of the CSIC universities and private companies.
Quality
Microanalysis Service has a Quality Manual and a Standard Operating (PNT) Procedures by which the laboratory achieves its goals of quality, qualification and reliability of its tests.
Contact: micro@cid.csic.es
Mª Teresa Vila
Technical Supervisor
teresa.vila@iqac.csic.es
Núria Barrera
Research assistant
nuria.barrera@iqac.csic.es
Equipment
This facility has the appropriate instruments for accurate sample analysis. The use of all primary and accessory equipment is restricted to laboratory personnel.
Primary Instruments:
- 1 Elemental Microanalyzer (A8) model Flash Smart, for C, H, N,S determination.
- 1 Elemental Microanalyzer (A7) model Flash 2000, for C, H, N, S determination.
- 2 Mettler Microscale (B3 and B4) models MT5 and MX5.
- 1 Metrohm Titrando model 808 for Cl, Br, I and F determination.
Principle of Method
C, H, N and S elemental analysis is performed by the modified Pregl-Dumas technique (dynamic flash combustion), using helium as carrier gas.
Instruments are calibrated according to the standards methods (Working Standardized Procedures).
Analyses are always carried out in duplicate. All results for elemental analysis are given as a percent of weight of each element, based on a known value of a standard by using the k value factors calculation.
Halogen determination is carried out according to the Schöniger procedure (flask full of oxigen), followed by potentiometric titration with AgNO3 for Cl, Br and I, and La(NO3)3 for F.
Requirements for submitting samples
Due to the small amount of sample (1mg) used in CHNS analysis, the requirements for sample submission are:
- Dry samples, without water or solvent residues.
- Solid or liquid materials combustible at 2000ºC or below.
- Homogeneous samples or able to be homogenized
- Samples containing Hg cannot be analyzed in halogen determinations (Cl, Br and I).
The minimum amount of sample required is:
Application forms
For analysis forms or other questions contact:
Servei de Microanàlisi IQAC (CSIC)
Jordi Girona 18-26. 08034 Barcelona
Tel. 93 2557710/932557619
Email: micro@cid.csic.es
Analyses will be done according to submission forms protocol supplying all required information. Each sample must be accompanied by a submission form.
Results reports will be sent by email within seven to ten days of sample reception.
Sample reception is from 8h to 15 h (Monday through Friday) in the Service Laboratory and from 8h to 22 h in the IQAC reception
