Territory Stories

Alligator Rivers region regional surface water quality monitoring : November 1978 - April 1981

Details:

Title

Alligator Rivers region regional surface water quality monitoring : November 1978 - April 1981

Other title

Alligator Rivers Region - Regional Surface Water Quality Monitoring, Volumes 1,2,3 (Plus draft)

Creator

Northern Territory. Department of Transport and Works. Water Division, Environmental Section

Collection

E-Publications; E-Books; PublicationNT; Report ; 49/1983

Date

1983-04-01

Notes

At head of title: Water Division, Dept. of Transport &​ Works, Northern Territory. "April 1983".

Language

English

Subject

Water quality -- Northern Territory -- Alligator Rivers Region; Hydrology -- Northern Territory -- Alligator Rivers Region

Publisher name

Northern Territory Government

Place of publication

Darwin

Series

Report ; 49/1983

Format

3 volumes. ; 30 cm

File type

application/pdf

Use

Attribution International 4.0 (CC BY 4.0)

Copyright owner

Northern Territory Government

License

https://creativecommons.org/licenses/by/4.0

Related links

https://hdl.handle.net/10070/672725 [Alligator Rivers region regional surface water quality monitoring : November 1978 - April 1981 - WRD83049_v_1.pdf]; https://hdl.handle.net/10070/672727 [Alligator Rivers region regional surface water quality monitoring : November 1978 - April 1981 - WRD83049_v_2.pdf]; https://hdl.handle.net/10070/672729 [Alligator Rivers region regional surface water quality monitoring : November 1978 - April 1981 - WRD83049_v_3.pdf]

Parent handle

https://hdl.handle.net/10070/229664

Citation address

https://hdl.handle.net/10070/672725

Related items

https://hdl.handle.net/10070/672729; https://hdl.handle.net/10070/672727

Page content

Technical Report WRD83049 Viewed at 14:07:10 on 29/07/2010 Page 28 of 440. Nitrate/Nitrite Armnonia Total nitrogen Total phosphorous as PO, Phosphate 27. These are the higher oxidation states of nitrogen and ore derived primarily by biological oxidation. They are present in larger quantities in some very productive billabongs. It may also be introduced into the envirolli~ent with sewage effluent. Their presence stimulates growth of biota, and it is an important factor when considering eutrophication. Nitrite is particularly important when considering public 1vater supplies. Correct storage of the sa~ple is crucial to arrest any further bacterial action and the sample is normally frozen. The parameter is normally expressed as N and may be converted to N0 3 by multiplying by 4.43. It is expected that the majority of this figure is actually nitrate with little or no nitrite. Ammonia is a product of microbiological activity and is often accepted as the chemical evidence of sanitary pollution. It may however, occur in groundwaters by natural reduction. It may be detected in wastewater as it is used to combine residual chlorine in water treaG"ent. The recommended method of storage of water samples containing ammonia is by freezing, as rapid oxidation is likely to occur under normal conditions. As well as above forms of nitrogen, total nitrogen includes dissolved nitrogen, a~d proteinous nitrogen. It also acts as a convenient check on levels of other forms of nitorgen, as nitrate contamination is a constant problem with acid washed bottles. This is total phosphorous as below expressed as phosphate ie. multiplication by 3.07. It is sometimes a more convenient term for comparison. This is the inorganic phosphate in water which is available for uptake by biota. It is expressed as P in results a~d may be converted to P0 4 by multiplying by 3.07. Phosphate is often considered as ~~e growth controlling nutrient, and controls likelihood of eutroohication. Its many sources include agricultural runoff (fertilisers) and wastewaters containing detergents. For definition of forms of phosphorous freezing of samples for preservation is recommended. I I I I I I I I I I I I I I I I I I 1 I


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