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 82 of 440. I I I I I I I I I I I I I I I I I I I I l,. 2. 3, 4. 5. 6 0' oJ. .. FILT?.ATION PROCEDURE .. The filtration units should be kept soaking i:1 ac~u (- lm HCJ) t.vith the suction outlet blocked off . ' ' .:... . WlLn .... .ne caps supplied .. Rinse units out with distilled water several times. Take care 1.vhe:r opening the top section that the large teflon 0-ring does not drop out. (If it does, it needs acid washing before replacement) . It is best to hold the to? section Hith bottom opening. If it is full of s&uplc, upright after empty off solution before unscrewing. ''d 0 .:1' ~a a-.:> ] .. un filter to each unit, replace top taking care that it is correctly threaded. Add to top reservoir 50 ml distilled waterr 10 ml 2m HN0 3 Stand for several minutes then pull through with vacuUJ.tl. N .. B. For the one filter set up for nutrients, add HCt instead of HNO ~ 3 Rinse top '~.'/ell with dis tilled w-ater, then remove base, discard water and rinse with distilled water .. - 1"' (?~o 1) rlda samp - -u m_ to reservoir, pull through about 50 ml, remove vacuum and discard collected filtrate, after noting volume collected. Continue to filter renlair~der. For flow filtering samples use 4 units. Unit A - HCl washed collect 100--lSOml sainple for storage at 5C for nutrient analyses. ~ . ~ c .l-' ' 1 .C' -.l- d The rema..1.nc.er o~ '-nl.s samp~e un,._l__l_,_ere ( 800 ml) is retained for general analysis and stored frozen .. The filter paper is removed and placed in a petri-dish nurrlbered, covered with i<.lfoi l stored in freezer for chlorophyll. The filtered volt.:me should be noted.
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