Lead and other toxic metals Pb, Cd, As, Ni and Hg

1.General characteristics

Toxic metals come from the combustion of coal, fuel, household waste, etc. And certain industrial processes.
They are generally in the form of particles (except mercury which is gaseous).
Metals accumulate in the body and cause toxic effects of short and / or long duration.
Exposure to high concentrations may affect the nervous system, kidney, liver, respiratory functions.

2. Methods of measurement

Reference method for measurement of Pb, As, Cd and Ni is stipulated in SR EN 14902 Ambient air quality. Standardized method for the determination of Pb, Cd, As and Ni in the PM10 fraction of particles in suspension. The reference method for the measurement of total gaseous mercury in the ambient air is provided in the SR EN 15852 The quality of air. Standardized method for the determination of total gaseous mercury. 3. rules

3. Norms

Law no. 104 of June 15, 2011 
Lead - Pb
threshold 0.5 g / m3 - the annual limit for the protection of human health

 

 

Law no. 104 of June 15, 2011 
As, Cd and Ni
arsenic 6 ng / m3 - the target value for the total content of the PM10 fraction averaged over a calendar year.
Cadmium 5 ng / m 3 - the target value for the total content of the PM10 fraction averaged over a calendar year.
Nickel 20 ng / m 3 - the target value for the total content of the PM10 fraction averaged over a calendar year.