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 22 of 440. I I I I I I I I I I I I I I I I I t I 21. 2. A SOOmL sample in a borosilicate glass bottle for dissolved oxygen analysis. The sample is fixed on site with manganese sulphate and sodium oxide. Also, at each site, measurements of pH, conductivity, temperature and turbidity plus observations of gauge height, site conditions and life presents are made. Data is transferred to a field note sheet (see figure(l). Samples are collected at a depth of 20-30 em below the water surface, Hhen sampling, care is taken to avoid the effects of; a) sampling personnel in water b) sediment stirred up by sampling personnel, boats, vehicles helicopters etc c) materials which may be carried from boats, vehicles, helicopters,gauge towers and gauge boards by stream current. T:rte best way to avoid these effects is to sa1nple ups trea'll of these effects if possible. 6.4 Sample Pretreatment/Preservation At the field laboratory, the samples as described below. A~DEL for analysis. 2L sample is split into the subThese are then despatched to 1. lL of sample is transferred to a suitably prepared bottle (see section 6.3). This sample is used for general parameter analysis. 2. A 250-300mL subsample is passed through an acid washed 0.45 um cellulose acetate filter. Both the filtrate and residue from this are to be analysed for heavy metals. The filtrate is placed in a'l acid washed SOOmL polythene bottle and acidified 1% with "Supa-pur" nitric acid. The paper is placed in a plastic jar. 3. A 250mL subsample is through a glass fibre paper. 25mL of the filtrate is placed in a DOC glass bottle. Also 25mL of unfiltered sample is placed in a bottle for T.D.C. analysis. The remainder of the filtrate is placed in a 250mL polythene bottle (acid washed, HCl) and is used for nutrient analyses. The glass fibre paper with its residue is placed in a petri dish, and used for analysis of chlorophyll and pheophytin. All the above subsamoles are stored on ice, and when a complete batch has been prepared, are sent to A~IDEL for analysis. The splitting of s~e 2L sawo/le into sub-samples as described above, is sketched in figure 6.2.


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