No abstract

The mechanisms responsible for negative biological effects due to airborne particulate matter (PM) exposure are still being studied, however the interactions between metals and biologic systems seem to be of primary importance. The aim of the study was to estimate a healthy risk linked to exposure to airborne PM10 metals by means of an environmental-sanitary risk assessment. Metals PM10 size distribution analysis was carried out in a central site of Torino city - Italy, then the Target Hazard Quotient (THQ) and the Cancer Risk (CR) were applied, according to standard EPA methods.All sampled metals were present on the different PM10 fractions, however some metals were distributed in some specific fractions: ANOVA test shows Cr, Cu, Mo and Pb as differently distributed among the eight fractions, rising the hypothesis of potential effects in specific tracts of respiratory system. Regarding the risk assessment, in general the CR was higher for an adult than for a child, conversely the THQ resulted higher for a child.While the concentrations of all the sampled metals appeared to be under control, their presence in the different PM10 fractions and their THQ and CR provided indications related to the body districts potentially in contact with these substance

No abstract

No abstract

Different sustainability indicators tend to reflect different or even converse outcomes in terms of countries. A careful comparative study is needed to clarify whether these indicators are actually coherent with each other. We analyze and compare five sustainable development indicators. Pearson correlation was used to make a comparative study among them. Within the two groups, the indicators are positively correlated. The Sustainable Development Index (SDI) of the second group also shares a negative correlation with the Human Development Index. On the other side, the Emergy Sustainability Index was negatively correlated with the Environmental Performance Index, and had little or no correlation with the Environmental Sustainability Index. Furthermore, when examining the scores obtained from the different SDIs, the results demonstrate that they might present somewhat conflicting findings, if not considering their complementarity. This, from one side, depends on the fact that Human Development Index (HDI), Environmental Performance Index (EPI), and Environmental Sustainability Index (ESI) provide a short-term local perspective on "sustainability", while the Emergy-based Sustainability Index (EmSI) and Surplus Biocapacity are more long-term and global in their perspective. HDI, EPI, and ESI have a more social and economic focus, including indicators whose dynamics are disjoined from the natural one. The emerging differences might be explained through the analysis of the individual sub-indicators for each of the SDIs.

No abstract

No abstract

No abstract