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TOC (összes szerves szén-tartalom) meghatározás

Data provider

Budapest University of Technology and Economics, Department of Applied Biotechnology and Food Science, Environmental Microbiology and Biotechnology Group

Organisation/Data provider's nameBudapest University of Technology and Economics, Department of Applied Biotechnology and Food Science, Environmental Microbiology and Biotechnology Group
Name of contact
Dr. Molnár Mónika, Dr. Feigl Viktória
Contact details
Telephone/fax
+36-1-4632347
E-mail
mmolnar@mail.bme.hu
vfeigl@mail.bme.hu
Website
http://envirotox.hu
Compulsory sheet
Method Hungarian nameTOC (összes szerves szén-tartalom) meghatározás
Method name
Determination of total organic carbon content (TOC)
Stage of development
after application
Patent number
MSZ EN 1484:1998
Contaminants
Chemical substance group|Typically treated chemical substance
  • Not a chemical substance
Description of the measurement technique
Detection limit
25 µg/l
Accuracy (%)
10.00
Reproducibility (%)
10.00
Deviation (%)
10.00
Selectivity
selective
Feasibility of the method
Method type
measurement/analytical method
Place of application
In laboratory
Application areas of the method
Contaminant characterisationin in extract
General characterisation of surface water
Characterisation of the effect of technological interventions
Application possiblities of the method
Screening of contaminated environment
Preliminary assessment of contaminated environment
Technology monitoring
Environmental element/phase the method may be applied to
Saturated soil
Unsaturated (whole) soil
Subsurface water
Surface water
Surface water sediment
Leachate
Other non-environmental samples the method can be applied to
ásványolaj, dohány, papír,
Implementation conditions
Instrument/equipment needed to perform the measurement
TOC analizátor
Other necessary equipment/tools
szárítószekrény
Standard materials for the test
kálium hidrogén ftalát, glükóz, NaHCO3
Reagents/materials for the test
O2,
How many samples are needed
20 ml, 100 mg
Data processing level
based on calibration curve with calculator
Necessary qualification
secondary education (chemical technician, chemical worker, laboratory assistant)
Type of laboratory
general analytical laboratory
Implementation costs
Purchase price of the equipment
40.000 - 200.000 Euro
Labour cost/measurement
2 - 4 Euro
Total cost/measurement
20 - 40 Euro
Innovation, main features
Brief concise description explaining the innovation

Szabványos módszer, nem tartalmaz újdonságot.
Szilárd minta esetében alkalmazott szabvány: MSZ EN 13137

Typical (recommended) application of the method

Szinte mindenféle minta elemzésére alkalmas.

Limits of the method

Tengervíz mintára nem alkalmas, a magas klorid-tartalom zavarja a mérést (2000 mg/l fölötti).

Detailed Protocol

A mintához 2 M-os sósavat adunk, O2-el kihajtjuk a szervetlen szén-tartalmú gázokat, majd 680C-on platina katalizátor jelenlétében 5.0 tisztaságú O2-ben elégetjük, utána infravörös érzékelővel detektáljuk a keletkezett CO2-t.
Szilárd mintánál összes szén-tartalom meghatározásakor :900C-on égetjük el platina és kobalt keverék katalizátor jelenlétében, míg a szervetlen szén-tartalom meghatározásakor: 25%-os foszforsavval szabadítjuk fel a karbonátokat, majd 200C-on égetjük el a mintát.

SWOT (evalaution based on scores)
Costs
1-very high
Time requirement
3-medium
Workload requirement
4-low
Equipment, apparata requirement
2-high
Qualified labour
3-medium
Environmental risk and workplace risks
4-low
Environmental reality
4-good
Adequate accuracy
5-excellent
Reproducibility
4-good
Cost efficiency
2-weak
Feasibility
4-good
Availability
3-average
Well known
4-good
SWOT (evaluation in words)
Strengths

Automatizálható,az alkalmazott berendezés működése közben nem igényel emberi felügyeletet.

Weaknesses

Drága a berendezésben használt katalizátor, évente ki kell cserélni.

Other information, references
Publications

MSZ EN 1484:1998

Completed applications
Location of the application, country
Magyarország
Location of the application, town and/or region
Budapest
Year of application
2008
Application areas
General characterisation of surface water
Environmental element the method was applied to
Screening of contaminated environment
Environmental element/phase the method was applied to
Subsurface water
Adatlap tulajdonságai
Datasheet id (original)
251
Creator
Hajdu Csilla
Status
Verified
Adatlap típusaPhysico-chemical assessment methods
Létrehozás
Módosítás