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METHOD 6200 <br /> FIELD PORTABLE X-RAY FLUORESCENCE SPECTROMETRY FOR THE <br /> DETERMINATION OF ELEMENTAL CONCENTRATIONS IN SOIL AND SEDIMENT <br /> start <br /> 11.1 Follow manufacturers'manual <br /> for operatson of FPXRF inslurmental <br /> 11.2 <br /> In Snu Type of Intrusive <br /> analysis <br /> made. <br /> 11.3 Remove debris from 11-4 Colla.sample from <br /> sda surface and level a 4 x 4 Inch square of <br /> curtaca, it nocossary. Tap cal <br /> sod to increase density <br /> and compactness. <br /> Sample <br /> 11 3 PMerm analysis. twmogenLzaliwt No Follow preparation <br /> bellow Is cadure io achieve <br /> d"rtg? your OOOa. <br /> Yes <br /> 11.4 Thdroughy mnr sample <br /> In a basket cm plaslic beg. LloMtar <br /> htmrogenization.with sodium <br /> fluorescein dye. <br /> 1 1-5 Ory 20 - 50 grams of <br /> Sample Inc 2 -a hours at a <br /> letup. no greater than 130,C- <br /> 11.6 Ground sample until 40% <br /> of original temple 13""& <br /> Its a 60-mesh sieve. <br /> 111 Place sample In <br /> polyertrylena sampr cup and <br /> perform vnallysle. <br /> slop <br /> CD-ROM 6200 - 31 Revision 0 <br /> January 1998 <br />