Evaluation of ART and Stoffenmanager Nano. Within the NANoREG project we compared the output of two of the tools: ART (described in section 2.3.3.1), which has not been designed specifically for NMs, and Stoffenmanager Nano with 24 field measurement studies (involving 167 activities) provided by the Swiss Accident Insurance Fund (SUVA). The activities were classified in the following domains: - Welding (MIG-MAG, TIG, oxy-acetylene) - Transfer of powders (vacuuming, transfer & mixing of powders, weighing, various MNMs) - Coating (coating of SiO2 on a polyethylene foil by propane burning) - Other hot processes (compounding of plastics and MNMs), incineration) - Spraying (car cleaning, laser printers, application of ENMs on shoes, spraying of metal sheets) - Impaction (blasting of CO2 for cleaning, cutting and nailing nanoporous insulating material) The input values for ART and Stoffenmanager Nano to each exposure situation were firstly assigned independently by two persons, trying to match as closely as possible the definitions of the parameters available in the references for the two models. The choice of parameters’ values was then discussed until a consensus was found. The major sources of disagreement were the attribution of activities, especially the ones outside the scope of the models (e.g. welding & other hot processes). The statistical analysis performed comprises the analysis of the correlations between the obtained scores and the measurements, conducted by computing the (non-parametric) Xxxxxxxx correlation coefficient (rS). Error! Reference source not found.2 and Error! Reference source not found. show box ots of the particle number concentration (PNC) collected with a CPC (upper size limit 1 μm) and geometric mean diameter (GMD) measured by category (whiskers represent the minimum and maximum values, the box the inter-quartile range and the red line the median). The number of exposure situations per activity is indicated in brackets. PNC reached values of up to 25 × 106 (#/cm3). The GMDs were between 20 and 100 nm for most exposure situations. Figure 2 Average measured particle number concentrations (PNC) by activity Figure 3 Average measured geometric mean diameters (GMD) by activity Figures 4 and 5 show the comparison of model scores for ART and Stoffenmanager -Nano, respectively, and the measurement data. Figure 4 Normalized ART's scores & PNC measurements, by activity Figure 5 Normalized Stoffenmanager- Nano's scores & PNC measurements, by activity Table 9 shows the Xxxxxxxx correlat...
