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Sample Matnx DIstl1led Watera Dnnkmg Water River Water DomestIc Sewageb Average mgll 058 353 082 068 1 1 0 Stand Dev ±mg/l 005 007 005 , 006 009 ReI Stand Dev % 88 20 59 94 83 aThreerephcatesfordIstl1ledwater Sevenrephcatesforothersamplematnces bSecondary treatment 8 2 2 Accuracy For three samples the results were compared to the Iodometnc tItratIon as a means ofobtammg a relatIve accuracy Amperometnc Iodometnc Back Sample TItratIon TItration % Matnx mgll mgll Recovery Dnnkmg Water 083 082 988 River Water 066 068 1030 DomestIc Sewage 145 110 757 BIbliography 1 Standard Methods for the Exammation of Water and Wastewater, 14th Ed, p 318, Method 409B "Iodometric Method II", (1975) 2 ASTMStandards, Part 31 "Water", p 276, Method D1253-76 (1976) 3 Bender, D F , "Companson of Methods for the DetermmatlOn of Total AvaIlable ResIdual Chlonne m Vanous Sa~pleMatnces", EPA Report-600/4-78-O19 3302-5PDF Image | Methods for Chemical Analysis of Water and Wastes
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