Flame Atomic Absorption Spectroscopy

Description

Flame Atomic Absorption Spectroscopy is a fast and easy technique with an extremely high sensitivity (especially for elements like Pb, Cd, Cu and Cr). The sample is atomized in the flame, through which radiation of a chosen wavelength (using a hollow cathode lamp) is sent. The amount of absorbed radiation is a quantitative measure for the concentration of the element to be analyzed.

The gas mixture is ignited in a flame at a temperature ranging from 2100 to 2300ºC. During combustion, atoms in the sample are reduced to the atomic state. A light beam from a lamp whose cathode is made of the element being determined is passed through the flame into a monochromator and detector. Free, unexcited ground state atoms of the element absorb radiation at characteristic wavelengths; this reduction of the radiation energy at the analytical wavelength is a measure of the amount of the element in the sample.

Equipment

FAAS (Flame Atomic Absorption Spectrometer) Analytik Jena AG, Germany, AAS 5 FL model equipped with a deuterium lamp, air-acetylene gas mixture and autosampler AS51.

Sample

The samples are analysed in aqueous solution.

Price analysis

1) The figures do not include VAT. 2) The urgency rate is three times the value of the table.

Discount table

Analysis Request

The analysis request should be filled and signed by the head of the institution that makes the request (Download the application form). Analyses are performed by order of submission of application in laboratory analysis. The results are given within 24 hours. In the case of samples for method development and in the case of large numbers of samples, the response time is agreed with the authority solicitor.

Upon request of an analysis the client should contact the technician directly responsible for the equipment to clarify all issues that involve the analysis.

Download the application form

The application form should be sent to Dr. Carla Rodrigues:

cmr@dq.fct.unl.pt

Laboratório de Análises

REQUIMTE - Rede de Química e Tecnologia
Departamento Química / Faculdade de Ciências e Tecnologia
Universidade Nova de Lisboa

2829-516 Caparica

Portugal
Tel: 351 212947805  (ext: 10993)
Fax:351 212948550

Delivery and receipt of samples

1 - Samples must be clearly identified, so that during manipulation does not erase the identification, and should be delivered well packaged.

2 - Delivery of results will be made by e-mail in PDF format, to be sent simultaneously to the applicant and responsible. In the case of complaints, they should be made within 15 working days.

3 - The remainder of the samples will be stored in the laboratory for 15 days after completion of the analysis, after which will be eliminated.