Events
02/25 - Convegno. Controllo di qualità nellanalisi del piombo in carte e cartoni per alimenti. Istituto Superiore di Sanità. Roma, 27 giugno 2001. Atti a cura di Sergio Costantini e Pietro Rossi 2002, 89 p.
Meeting. Quality control for the analysis of lead in papers and cardboards for food packaging. Istituto Superiore di Sanità. Rome, June 27, 2001.
Proceedings edited by Sergio Costantini and Pietro Rossi
2002, 89 p. Rapporti ISTISAN 02/25
Aim of the meeting, the proceedings of which are reported, is to point out the most relevant aspects of the quality control circuit of lead. The meaning of a legal limit of lead in papers for food packaging is based on the fact that a material having high amount of lead could potentially contain other contaminants. The sample preparation represents a very important step that must be carefully considered in order to have a correct final result. The atomic absorption graphite furnace resulted the most utilized technique, since it offers both good accuracy and sensitivity; nevertheless, numerous factors influencing the determination must be considered. Besides obtaining accurate values, as established by the Italian regulation, the problem is to take correct decisions in presence of a variability not eliminable; in this case, statistics can give a valid help by means of a mathematical model. The suitability of the materials used in a Quality control programme must be considered a parameter of capital importance, since the performance of the laboratories could be heavily influenced by the quality of samples. The collaborative trial has been carried out with the participation of 59 laboratories of the national service.
Key words: Lead, Quality control, Atomic absorption