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<br />1 100 Simms Street
<br />Lakewood, Colorado EARTH
<br />Phone (3031 233-8155
<br />Page 2
<br />AIR Mailing Address:
<br />1100 Simms Street
<br />Golden, Colorado 80401
<br />NATURAL RESOURCES LABORATORY, IN C.
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<br />B Soluble boron in milligrams per kilogram (mg/Irg 73),
<br />(ref: Extraction by modification of A,S.A. Mono.
<br />No. 9, Part 2, Method 75-4, p. 1062. Analysis by
<br />carmine method, Standard Methods, 11th Ed „ 1976,
<br />p. 290,)
<br />P Soluble phosphorus in milligrams par kilogram (mg~kg P)
<br />ae measured on NH HCO -lYPPA solution, (ref: extraction,
<br />Soltanpour,Commun4 in3Soi1 Soi, and Plant Analysis, 10(11),
<br />1979, pp, 7.1.+11-20; measurement by sacorbio void reduction
<br />modification to above procedure, Jeffery, Chemical Methods
<br />of Rock Analysis, 1975, PD• 381-385.)
<br />K Soluble potassium in milligrams per kilogram (mg/kg R),
<br />as measured oa saturation eztraotion solution, measurement
<br />by atomio absorption speotrophotometry. (ref: eztraotion,
<br />Soltanpour, ibid; measurement, Perkin-Elmer Corp, instrument
<br />manuals.)
<br />Fe Mn Cd Cr Soluble heavy metals: Iron, manganese, cadmium, ohromium,oopper,
<br />Cu Pb N1 Zn lead, nickel, zinc in milligrams per kilogram (mg~lcg Fe,
<br />Mn, Cd, Cr, Cu, Pb, Ni, Zn ae measured on saturation extraction
<br />solution, measurement by atomio absorption spectrophotometry.
<br />(ref: eztraotion, Soltanpour, ibid= measurement, Perkin-
<br />E7mer Corp. instrument manuals,)
<br />P Soluble vanadium 7.n milligrams per kilogram (mg~lcg 0) as
<br />measured on saturation extraction solution, oomplezation-
<br />epectrophotometrio measurement. (rat: eztraotion, Soltanpour.
<br />ibid; measurement, Jeffery, ibid, pp.
<br />Mo Soluble molybdenum in milligrams per kilogram (mg/kg Mo).
<br />(NH )2C033 extraction. (ref: Extraction by Vlek, Fh,d,
<br />the~ie, Colorado State IInivereity, 1975, Analysis by
<br />modification of Ward, Anal. Chem„ vol, 2j, no. 5, 1951, p. 788,)
<br />As Se Hot water soluble arsenio and selenium in milligrams per
<br />kilogram (mg~kg As, Se). (ref: Extraction by A,S,A, Mono.
<br />No. 9, Part 2, p. 1122. Analysis by hydride generation-
<br />atomio absorption speotrophotometry; II,S,-E,P,A „
<br />Perkin-Elmer Corp., et al,)
<br />ANALYTICAL SERVICES AND RESEARCH
<br />-42-
<br />WATER
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