AS 3550.2-1990
Current
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Waters Determination of carbon dioxide - Alkalimetric titration method (Reconfirmed 2016)
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English
19-01-1990
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Sets out a titrimetric method for determining the carbon dioxide content of waters in concentration range 1 to 100mg/L.
| Committee |
CH/22
|
| DocumentType |
Standard
|
| ISBN |
0 7262 5899 7
|
| Pages |
3
|
| ProductNote |
Reconfirmed 02/09/2016.This standard has been reconfirmed in Australia in 2016 and remains current in New Zealand. Reconfirmation Notice 02/09/2016
|
| PublisherName |
Standards Australia
|
| Status |
Current
|
| Supersedes |
This Standard sets out a titrimetric method for the determination of free carbon dioxide in waters using either a coloured or potentiometric end-point.As carbon dioxide may be present in the free form or chemically combined as carbonates or bicarbonates, a means for determining the total carbon dioxide from the concentration in all forms is provided in Appendix A. The method is applicable to waters containing free carbon dioxide in the concentration range 1 mg/L to 100 mg/L.Interferences: Cations and anions that quantitatively disturb the normal carbon dioxide-carbonate equilibrium interfere with the determination. Aluminium, chromium, copper and iron are some of the metals whose salts contribute to high results. The iron(II) concentration should not exceed 1.0 mg/L. Positive errors are caused by amines, ammonia, borate, nitrite, phosphate, silicate and sulfide. Mineral solids and salts of strong acids and weak bases affect the determination and therefore should be absent. Negative errors may be introduced by high total dissolved solids, such as those encountered in seawater, or by adding excess indicator.
First published as AS 2448-1981.
Revised and redesignated AS 3550.2-1990.
| AS 2166-2002 | Laboratory glassware - One-mark pipettes |
| AS 2165-1996 | Laboratory glassware - Burettes |
| AS 3550.4-1990 | Waters Determination of solids - Gravimetric method |
| AS 2031.1-1986 | Selection of containers and preservation of water samples for chemical and microbiological analysis - Chemical |
| AS 2162-1979 | Code of practice for the use of volumetric glassware |
| AS 2164-2003 | Laboratory glassware - One-mark volumetric flasks |
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