Laserfiche WebLink
• <br />1100 Simms Street <br />Lakewood, Colorado <br />Phone 1303) 233 8155 <br />~ 3 <br />EARTH <br />Mailing Address: <br />AIR 1100 Simms Street <br />Golden, Colorado 80401 <br />NATURAL RESOURCES LABORATORY, INC. <br />Hg Total acid soluble mercurq in milligrams per kilogram <br />(mg/kg Hg), (ref: Acid digestion followed by cold vapor <br />atomic absorption epectrophotometry se adapted by Perkizr <br />Elmer Corp., et al., from original work by Aatch and Ott, <br />Anal. Chem„ vol, 40, no. fly, 1968, pp. 208rj-2087.) <br />Sulfur <br />• <br />• <br />Forms Pyritic sulfur, sulfate eulftn-, organic sulfur and total <br /> sulfur ae percent sulfur (?6 S) present for each respective <br /> form. Analysis by ASTM scheme for individual forme; <br />PYR-S sulfate aulilu~: soluble dilute HC1, determine gravi.metrically <br />SIILF-S ae BaSO Pyritic sulfvr: atomio absorption analysis for <br />~ <br />ORC-S uble in dilute ffiIO after initial AC1 extraction to <br />iron so <br />TOT-S remove nongyritic iron, e~ calculation of eulilir equivalent <br /> to measured iron. Org+anio sulilir: analysis by differenoe, total <br /> sulfur minus svm of sulfate and pyritio sulfur. Total <br /> sulfur: chemical ozldation of sulfur forme, determine <br /> gravimetrically ae BaSO Soheme ie eub~ect to error if there <br />~ <br /> rale present whioh are partially or <br />are nonpyritic iron min <br /> completely insoluble in HC1 and are partially or completely <br /> soluble in HN03; this will give high apparent pyritio sulfur <br /> values, (ret. Amerloan Sooiaty for Testing and Materials, <br /> method D21a92, 1971x, sad Furman, Standard Methods of Chemioal <br /> Analysis, vol. 1, 1975r pP• 1007-1011.) <br />CaC03 Neutralization potential, or a uivalent lime, in peroent <br /> calcium carbonate (96 CaCO ). Ref: Smith, FAA-670/2-71y-076, <br /> 1974. Modification of Me~od, pp, 54-$1.) <br />IOI Lose on ignition in percent weight lost after ignition in <br /> air for 16 hours at 55o C, IIeed ae an agprozimation of <br /> total combustible solids (organio matter); may be in <br /> error for samples with high cabonate mineral content due <br /> to partial thermal decomposition of carbonates to give off <br /> some C02, (ref: Standard Methods, ibid.,m~athod 208E, p.95•) <br />ANALYTICAL SERVICES AND RESEARCH <br />-43- <br />WATER <br />