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Notes 1 The folloWIng hnes may also be used 248 8 nm Relative SensItivIty 2 271 9 nm Relative SensltlVlty 4 302 1nm Relative SensItivIty 5 252 7 nm Relative SensItIvIty 6 372 0 nm Relative SensItIvIty 10 2 Data to be reported Into STORET must be reported as ug/l 3. The 1)1O-phenanthrohne colonmetnc method may also be used (Standard Methods, 14thEdItion)p 208) 4. For concentratlOns of Iron below 005 mg/l) eIther the SpecIal ExtractIon Procedure glVen In part 9 2 of the AtomIC AbsorptIon Methods sectIon or the furnace procedure, Method 236 2) IS recommended Precision and Accuracy 1 Number Of Labs 82 85 78 79 57 54 An Interlaboratory study on trace metal analyses by atomlC absorptlOn was conducted by the Quahty Assurance and Laboratory EvaluatIon Branch of EMSL SIX synthetIC concentrates contamIng varyIng levels of alumInum) cadmmm, chromJum, copp~r, lro~) manganese) lead and ZInC were added to natural water samples The statistical results fOf Iron were as follows True Values ug/1Iter 840 700 350 438 Standard Mean Value DevIatIOn ug/bter ug/hter 855 173 680 178 348 131 435 183 Accuracy as % BIas , 18 -28 -0,5 -07 141 382 24 58 69 10 48 69 236 1-2PDF Image | Methods for Chemical Analysis of Water and Wastes
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