1. Institute of Methodologies for Environmental Analysis, National Council of Research, Contrada S. Loja, 85050 Tito Scalo, Italy
2. Environmental Engineering and Physics Department, Basilicata University, Contrada Macchia Romana, 85100 Potenza, Italy
3. Basilicata Asbestos Regional Center, Basilicata Regional Agency for the Environment, Via della Fisica, 18 C/D, 85100 Potenza, Italy