Chiappino G, Sebastien P, Todaro A
Centro di Studio e Ricerca sugli Effetti Biologici delle Polveri Inalate, Università di Milano.
Med Lav. 1991 Sep-Oct;82(5):424-38.
The atmospheric concentrations of asbestos fibres were measured in 6 towns by long term sampling of air (3 weeks) and by counting at TEM both long and short fibres. Chrisotile and amphiboles were separately counted. For each town high traffic, low traffic and no traffic zones were considered as well as industrial areas and areas with possible and probable sources of asbestos pollution. For Milano the seasonal variations in atmospheric concentrations of asbestos fibres were also recorded in a central square. The maximum concentrations of total fibres was found in Milano (251.7 fibres/liter) and the minimum in Bologna (0.3 fibres/liter). Chrisotile and ultrashort fibres are the most frequent component of the atmospheric pollution. The fibre counts to which people is exposed are far below the levels at which it has been possible to detect risks in industry: however the possibility of a synergism between asbestos and other pollutants with consequent increase of the total carcinogenic potential of the polluted atmosphere cannot be ruled out. The control of the most active sources of asbestos dispersion must be considered in a correct balance between costs and social benefits.
通过对空气进行长期采样（3周），并在透射电子显微镜下对长纤维和短纤维进行计数，测量了6个城镇大气中的石棉纤维浓度。分别对温石棉和闪石进行了计数。对于每个城镇，都考虑了高交通流量区、低交通流量区和无交通流量区，以及工业区和可能存在石棉污染来源的区域。对于米兰，还在一个中心广场记录了石棉纤维大气浓度的季节性变化。总纤维的最高浓度出现在米兰（251.7纤维/升），最低浓度出现在博洛尼亚（0.3纤维/升）。温石棉和超短纤维是大气污染中最常见的成分。人们接触到的纤维计数远低于在工业中能够检测到风险的水平：然而，不能排除石棉与其他污染物之间存在协同作用，从而导致污染大气的总致癌潜力增加的可能性。必须在成本和社会效益之间进行正确权衡，考虑对最活跃的石棉扩散源进行控制。
