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7 Procedure 7 1 72 7.3 7.4 Where partIculate matter IS present, the sample must be filtered pnor to the determInatIOn ThIS can be accomplIshed by havIng the Techmcon contInUOUS filter as an Integralpartofthesystem ThesamplemaybecentnfugedInplaceoffiltratIOn Allow both colonmeter and recorder to warm up for 30 mInutes Run a baselIne wIth all reagents, feedIng dIstIlled water through the sample lIne Place workIng standards In sampler In order of decreasIng concentratIOns Complete fillIng ofsampler tray WIth unknown samples When a stable baselIne has been obtaIned, start the sampler ml of Stoek SolutIon 10 20 40 80 150 200 300 400 Cone, mg/l 50 100 200 400 750 1000 1500 2000 8 CalculatIOn 8 1 Prepare standard curve by plottIng peak heIghts of processed standards agaInst known concentratIons Compute concentratIOn of samples by companng sample peak heIghts WIth standard curve 9. PreCISion and Accuracy 9 1 Precision and accuracy data are not avaIlable at thiS time Blbhography 1. J E. O'Bnen, "Automatic AnalySIS of ChIondes In Sewage", Waste Engr, 33, 670-672 (Dec 1962) 2. Techmcon AutoAnalyzer II, Industnal Method No 99-70W, Techmcon Industnal Systems, Tarrytown, N Y , 10591 (Sept 1973) 3252-2PDF Image | Methods for Chemical Analysis of Water and Wastes
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