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Interferences 1 SodiUm and sIlIcon at concentratIOns m excess of 1000 mg/1 have been found to severely depress the berylhum absorbance 2 BIcarbonate Ion IS reported to mterfere, however, ItS effect IS ehmmated when samples are aCIdified to a pH of 1 5 3. Alummum at concentratIOns of 500 ug/1 IS reported to depress the sens1tlVlty of berylhum [Spectrocmm Acta 22,1325 (1966)] Notes 1. Data to be entered mto STORET must be reported as ug/1 2 The "alummon colonmetnc method" may also be used (Standard Methods, 14th EdItion, p 177) The mm1mum detectable concentratIOn by thIS method IS 5 ug/1 3 For concentratIOns ofberylhum below 002 mg/1, the furnace procedure (Method 210 2) IS recommended Precision and Accuracy 1. In a smgle laboratory (EMSL), usmg a mIxed mdustnal-domest1c waste effluent at concentratIons of 001, 005 and 025 mg Be/I, the standard deVIatIOns were ±O 001, ±O 001 and ±O 002, respectively Recovenes at these levels were 100%, 98% and 97%, respectively 210 1-2PDF Image | Methods for Chemical Analysis of Water and Wastes
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