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TABLE 4 <br /> FIELD-BASED METHOD DETECTION LIMITS (mg/kg)' <br /> Instrument <br /> Analyte TN TN Lead X-MET 920 X-MET 920 XL MAP <br /> 9000 Analyzer (SiLi (Gas-Filled Spectrum Spectrum <br /> Detector) Detector) Analyzer Anal zer <br /> -Antimony 55 NR NR NR NR NR <br /> Arsenic 60 50 55 50 110 225 <br /> Barium 60 NR 30 400 NR NR <br /> Chromium 200 460 210 110 900 NR <br /> Cobalt 330 NR NR NR NR NR <br /> Copper 85 115 75 100 125 525 <br /> Lead 45 40 45 100 75 165 <br /> Manganese 240 340 NR NR NR NR <br /> -Molybdenum 25 NR NR NR 30 NR <br /> Nickel 100 NR NA NA NA NR <br /> Rubidium 30 NR NR NR 45 NR <br /> Strontium 35 NR NR NR 40 NR <br /> Tin 85 NR NR NR NR NR <br /> Zinc 80 95 70 NA 110 NA <br /> Zirconium 40 NR NR NR 25 1 NR <br /> Source: Reference 4 <br /> a MDLs are related to the total number of counts taken. See Section 13.3 for count times <br /> used to generate this table. <br /> NR Not reported. <br /> NA Not applicable; analyte was reported but was not at high enough concentrations for method <br /> detection limit to be determined. <br /> CD-ROM 6200 - 25 Revision 0 <br /> January 1998 <br />