Ion chromatograph
Analytical technique description:
The ion chromatography is one of the most frequently used analytical techniques for the determination of cations and anions in aqueous solution. Fluorides, chlorides, nitrites, nitrates, sulfates, oxalates and phosphates are determined by use of an anion column; sodium, ammonium, potassium, magnesium, calcium are determined by use of a cation column. In both cases, the analysis is conducted with chemical suppression of the conductivity of the eluent. The technique is suitable for low levels of concentration.
Applications:
It is an analytical technique particularly suitable for the analysis of soluble salts in stone and building materials in general: these salts are among the most important agents of deterioration of the building stone. It allows you to evaluate the status of an artifact and the effectiveness of treatments for cleaning.
Basics: It is a method of separation, in which the sample solution, is eluted through a chromatographic column that separates various analytes; which are then carried to a conductivity detector whose values ​​are compared with those obtained from the reference solutions.
Instrumental details:
Dionex ICS 1000 (Florence Unit, Milan Unit).
ICVBC - AREA DI RICERCA CNR DI FIRENZE
Via Madonna del Piano, 10 - 50019 Sesto Fiorentino (FI)
Tel. 055 5225484 - Fax 055 5225483
Institute for the Conservation and Valorization of Cultural Heritage