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HYDRO30369
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Last modified
8/24/2016 8:49:06 PM
Creation date
11/21/2007 12:19:03 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1999002
IBM Index Class Name
Hydrology
Doc Date
7/22/1999
Doc Name
MEMO TO FILE METHOD DETECTION LIMITS FOR BETA ACTIVITY BASELINE WATER QUALITY CHARACTERIZATION
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<br />i <br />METHOD 9310 <br />GROSS ALPHA AND GROSS BETA <br />Start <br />7.1 Calibrate using <br />Am•241 for gross <br />alpha activity; Sr-90 <br />or Cs-137 for gross <br />beta activity. <br />7.1.3 Prepare <br />separate alpha <br />and beta Darticle <br />self-absorption <br />graphs. <br />7.1,4 Acidify tap <br />water aliquots with <br />HNOg evaporate; <br />transfer to <br />planchet. <br />7.1.4 Evaporate <br />and dry: count <br />alpha, beta <br />residue for reference <br />standard. <br />7.2 Transfer aliquot <br />of water sample to <br />beaker; evaporate. <br />A <br />7.2 <br />Does water Yes 7.2 Convert to <br />sample contain nitrate salts. <br />chloride <br />salts) <br />7.2 Add HNO3; swirl; <br />transfer each aliquot <br />to tard Dlanchet; <br />evaporate. <br />7.3 Dry sample <br />residue; weigh <br />and count. <br />/ 7.4 <br />Are yes 7,4 Flame to a <br />hygroscopic dull red heat. <br />salts <br />presenO <br />7.5 Weigh and <br />count. <br />A <br />B <br />• <br />B <br />7.6.1 Calculate alpha <br />radioactivity. <br />7.6.2 Calculate beta <br />radioactivity. <br />Slop <br />9310 - 9 <br />CD-ROM Revlslon 0 <br />Date September 1986 <br />
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