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Notes 1 For levels ofcopper below 50 ug/1, elther the Speclal ExtractlOn Procedure, glven m part 9 2 of the Atomlc AbsorptlOn Methods sectlOn or the furnace techmque, Method 220 2, is recommended 2. Numerous absorptlon lmes are available for the determmatlon of copper By selectmg a smtable absorptlOn wavelength, copper samples may be analyzed over a very wlde range ofconcentratlOn Thefollowmglmesmaybeused 327.4 nm Relative Sensltivlty 2 216.5 nm Relatlve Sensltivlty 7 222.5 nm Relative SensltlVlty 20 3 Data to be entered mto STORET must be reported as ug/1 4 The 2,9-dlmethyl-1, lO-phenanthrohne colonmetnc method may also be used (Standard Methods,14thEdltlOn,p 196) Precision and Accuracy 1. Number of Labs An mterlaboratory study on trace metal analyses by atomlC absorption was conducted by the Quahty Assurance and Laboratory EvaluatlOn Branch of EMSL SlX synthetlc concentrates contalmng varymg levels of alummum, cadmlUm, chromlum, copper, lron, manganese, lead and zmc were added to natural water samples The statlstical results for copper were as follows Standard True Values Mean Value Devlation Accuracy as ug/hter ug/hter ug/hter % Blas - 2 4 70 13 75 97 61 297 302 305 56 09 91 92 86 84 66 66 120 139 97 155 332 324 56 60 64 23 75 76 22 2201-2PDF Image | Methods for Chemical Analysis of Water and Wastes
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