Alligator Rivers region regional surface water quality monitoring : November 1978 - April 1981
Alligator Rivers Region - Regional Surface Water Quality Monitoring, Volumes 1,2,3 (Plus draft)
Northern Territory. Department of Transport and Works. Water Division, Environmental Section
E-Publications; E-Books; PublicationNT; Report ; 49/1983
At head of title: Water Division, Dept. of Transport & Works, Northern Territory. "April 1983".
Water quality -- Northern Territory -- Alligator Rivers Region; Hydrology -- Northern Territory -- Alligator Rivers Region
Northern Territory Government
Report ; 49/1983
3 volumes. ; 30 cm
Attribution International 4.0 (CC BY 4.0)
Northern Territory Government
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]
Technical Report WRD83049 Viewed at 14:07:10 on 29/07/2010 Page 21 of 440. - ---~- --- --. -- -- --------- 2 0. 6 . S.~PLING ~~D ANALYSIS 6.1 Introduction Sampling frequency is normally monthly, however, preceding the wet season s&upling is carried out fortnightly in an effort to gauge the effects of the ''first flush''. Up to April 1981 (inclusive) all analyses have been carried out by a.TJ outside agency (k'!DEL). Samples are stored until a complete batch is collected, and sent to k~DEL on this batch basis (usually monthly) . 6.2 Sample Bottles Acid washed polypropylene or polyethylene bottles and solvent washed glass bottles are supplied by ANDEL in sets for each sampling run for actual transport of the pretreated and/or preserved samples to Adelaide. In addition bottles are prepared at the Jabiru field laboratory by Water Division technicians for s&uple collection purposes. Bottle preparation involves the following: l. Detergent washing (non ionic detergent) 2. Acid soa.~ing for new or dirty bottles ln 6M HN01 for l week or for "clean'' bottles lM HN0 1 for l week. 3. Rinsing several times with deionised, distilled water. Bottles for T.O.C. and D.O.C. sa.~ples are solvent washed glass bottles fitted with solvent washed alQ~iniQu foil seals. Bottles for dissolved oxygen sampling are also glass. 1-lhere nutrient analysis is involved (eg. nitrate) sample bottles are acid washed with hydrochloric acid instead of nitric acid. 6.3 S&upling Procedure Field sampling and sample preparation procedures are based on those methods set down by Batley (Appendix C). Sampling is carried out by a pair of field staff, gaining access by motor vehicle (dry season) or a combination of motor vehicle, boat, airboat and helicopter (wet season). At each site two samples are ta~en: l. A 2L sa.~ple is taken in a prepared polythene bottle. This is later split into subsam~les for general parfu~eter analvsis, metal filtration and field laboratory analysis. The sample is placed on ice for transport back to the field laboratory. I I I 1 1 I I I t I I I I I t I I I I I
Aboriginal and Torres Strait Islander people are advised that this website may contain the names, voices and images of people who have died, as well as other culturally sensitive content. Please be aware that some collection items may use outdated phrases or words which reflect the attitude of the creator at the time, and are now considered offensive.
We use temporary cookies on this site to provide functionality.
Click on Related items to view images, documents, etc. associated with this item.
You are welcome to provide further information or feedback about this item by emailing TerritoryStories@nt.gov.au