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11 2 11 3 that IS wIthout the reducIng reagents The true mercury value can then be obtaIned by subtractIng the two values IfaddItIOnal sensItivIty IS reqUired, a 200 ml sample with recorder expansion may be used prOVided the Instrument does not produce undue nOIse USIng a Coleman MAS-50 with a dryIng tube of magnesIUm perchlorate and a vanable recorder, 2 mv was set to read full scale. WIth these conditIOns, and distIlled water solutIOns of mercunc chlonde at concentratIOns of 0 15, 0 10, 005 and 0025 ug/1 the standard deviations were ±O 027, ±O 006, ±O 01 and ±O 004 Percent recovenes at these levels were 107, 83, 84 and 96%, respectively DIrectIons for the disposal of mercury-contaInIng wastes are given In ASTM Standards, Part 31, "Water", p 349, Method 03223 (1976) BIbliography 1 Kopp, J F, Longbottom, M C and Lobnng, L B, "Cold Vapor Method for DetermInIng Mercury", A WWA, vol 64, p 20, Jan, 1972 2 Annual Book ofASTMStandards, Part 31, "Water", Standard 03223-73, p 343 (1976) 3. Standard Methods for the ExamInatIOn of Water and Wastewater, 14th EditIOn, 'p 156 (1975) 245 1-6PDF Image | Methods for Chemical Analysis of Water and Wastes
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