1. Edukacija u području fizikalnih, kemijskih i bioloških analiza tla
Projekt Inovativna škola za zelenu budućnost
Edukacija u području fizikalnih, kemijskih i bioloških analiza tla
Projekt financira Europska unija.
This project is funded by the European Union.
This document has been produced with the financial assistance of the European Union. The contents of this document are the sole responsibility of Faculty of Agriculture in Osijek and can under no circumstances be regarded as reflecting the position of EU.

2. Određivanje intenziteta disanja tla
- intenzitet disanja tla ili organskih gnojiva odnosno količinu izdvajanja CO2
moguće je mjeriti hvatanjem izdvojenog ugljičnog dioksida u predložak s NaOH
koristimo svježe uzorke tla ili organskih gnojiva mase 50 g
provodimo dvodnevnu inkubaciju uzoraka tla
Projekt financira Europska unija.
This project is funded by the European Union.
This document has been produced with the financial assistance of the European Union. The contents of this document are the sole responsibility of Faculty of Agriculture in Osijek and can under no circumstances be regarded as reflecting the position of EU.

3. Određivanje intenziteta disanja tla
- izdvajanje CO2 u svim uzorcima mjeriti u tri ponavljanja tijekom 48 sati u
potpunom mraku
ukoliko rezultate intenziteta disanja izražavamo prema suhoj tvari, u uzorcima svježeg tla ili organskog gnojiva prije analize odrediti trenutnu vlažnost
Projekt financira Europska unija.
This project is funded by the European Union.
This document has been produced with the financial assistance of the European Union. The contents of this document are the sole responsibility of Faculty of Agriculture in Osijek and can under no circumstances be regarded as reflecting the position of EU.

4. u predložak nakon 48 sati dodati 5 ml 20% otopine BaCl2
Postupak
odvagati 50 g tla
u hermetički zatvorenu bocu volumena 500 do 1000 ml uz uzorak tla postaviti predložak s 10 ml 0,2 M NaOH
u predložak nakon 48 sati dodati 5 ml 20% otopine BaCl2
provesti titraciju preostale lužine s 0,1 M HCl uz dvije do tri kapi indikatora (1 % alkoholna otopina timolftaleina)
za slijepu probu kao uzorak koristiti 100 g kvarcnog pijeska
Projekt financira Europska unija.
This project is funded by the European Union.
This document has been produced with the financial assistance of the European Union. The contents of this document are the sole responsibility of Faculty of Agriculture in Osijek and can under no circumstances be regarded as reflecting the position of EU.

5. Za izračun oslobođenog CO2(mg) koristi se formula:
mg CO2 = (a – b) × F
a = ml kiseline za titraciju lužine u slijepoj probi,
b = ml kiseline za titraciju lužine u uzorku,
F = faktor ovisan o molaritetu HCl (2,2 za 0,1 M HCl ili 22 za 1 M HCl, budući je
22 ekvivalent mase CO2)
volumen i molaritet lužine (umjesto NaOH može biti i KOH) prilagoditi intenzitetu izdvajanja CO2
molaritet HCl ovisi o molaritetu NaOH
Projekt financira Europska unija.
This project is funded by the European Union.
This document has been produced with the financial assistance of the European Union. The contents of this document are the sole responsibility of Faculty of Agriculture in Osijek and can under no circumstances be regarded as reflecting the position of EU.

6. Rezultate izraziti: mg CO2/g/dan Projekt financira Europska unija.
This project is funded by the European Union.
This document has been produced with the financial assistance of the European Union. The contents of this document are the sole responsibility of Faculty of Agriculture in Osijek and can under no circumstances be regarded as reflecting the position of EU.