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EC number: 262-309-9
CAS number: 60580-61-2
(airborne fraction): total:
the original study report by DMT, the mass median diameter was not
calculated. Since the deposited fractions were provided for each of the
cascade impactor stages, it was possible to fit a monomodal lognormal
distribution to the data by standard non-linear regression procedure.
The MMAD and GSD were calculated as follows: MMAD
= 191.01 µm,
GSD = 8.11
the cascade impactor already takes aerodynamic characteristics of the
particles into account, the reported mass median diameter can be
interpreted as the mass median aerodynamic diameter.
data and the corresponding GSD were used as distribution parameters for
the MPPD model enabling an estimation of deposited dust fractions in the
human respiratory tract: These fractions were estimated as follows:
(TB): 0.17 %
(PU): 0.6 %
The test item zinc 5-nitroisophtalate has
following particle size distribution:
d10: 3.78* / 3.45` µm
d50: 5.95* / 5.56` µm
d90: 9.07* / 8.70` µm
* Fraunhofer model / `Mie model
- Total Dustiness (airborne fraction): 60.49
- Mass median aerodynamic diameters
(monomodal distribution) of airborne fraction: MMAD = 191.01 µm.
- Geometric standard deviation: GSD = 8.11
Fractional deposition in human respiratory
tract (MPPD model, based on calculated MMAD):
- Head (ET): 12.04 %
- Tracheobronchial (TB): 0.17 %
- Pulmonary (PU): 0.60 %
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