**Author details**

452 Atmospheric Aerosols – Regional Characteristics – Chemistry and Physics

arthritis etc. [11]

alveoli by breathing.

to the employees is not significant.

ground level should be taken into account - Install effective filters into the vent shafts


(Aerodynamic Particle Sizer Spectrometer 3321 TSI USA).



**of the measurements** 

exotic woods

steelworks.

to 740 nm.

**6. Instrumentation** 

concentration of iron in the organism exceeds the capacity of transport and spare proteins for iron, then it is deposited loose into the tissue. An increased deposition of iron in tissues causes fibrotization and the reduction of functional tissue. The main signs include development of liver hemosiderosis and later cirrhosis, type II diabetes, cardiomyophy,

The round shape of nanoparticles probably reduces toxicity and facilitates transport from

The concentrations of micro- and nano- particles measured in one cubic meter were higher than the permitted exposure limit (PEL) specified in the Government Order of the Czech Republic but, considering the mostly automated operation of the steelworks, the level of risk

**5. Conclusion – Examples of measures recommended based on the results** 




The *measurements of aerosol particles* were conducted with SMPS (Scanning Mobility Particle Sizer) 3934 consisting of CPC (Condensation Particle Counter) 3022 (working in low regime) and EC (Electrostatic Classifier) 3071 equipped with DMA (Differential Mobility Analyzer), probe 3081 and impactor 0.0457 cm. The measurements were conducted using the setup scanning interval of 5 minutes, which enabled collection of samples in the range from 14 nm

*Aerosol particles* were collected by means of a personal cascade impactor (Sioutas 225-370). The personal cascade impactor consists of four impaction levels and a filter that enables sorting and sampling airborne particles in five size intervals. Samples were collected with the personal impactor which used the sampling device QuickTake30 at a specified constant flow rate.

Micro *aerosol particles* were measured in the range from 0.5 µm to 20 µm using APS

Karel Klouda *State Office for Nuclear Safety, Czech Republic, e-mail: karel.klouda@sujb.cz* 

Stanislav Brádka and Petr Otáhal

*The National Institute for Nuclear, Chemical and Biological Protection* 
