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ID number:258497
 
Author:
Evaluation:
Published: 11.04.2014.
Language: Latvian
Level: Elementary school
Literature: n/a
References: Not used
Extract

Tuluols (bezkrāsains, degošs šķidrums ar asu smaku)
Izcelsme – degvielas izgarojumi un automašīnu izplūdes gāzes.

Putekļi un aerosoli
Izcelsme – katlumāju pelni, organiskie putekļi (no koksnes, miltiem graudiem kūdras), celtniecības materiālu ražošana, metālu kausēšana.

Formaldehīds (HCOH- gāze ar izteiktu, asu smaku)
Izcelsme – cigarešu dūmi, siltumizolējoši materiāli, līmētas skaidu plāksnes, insekticīdi.

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