Table 5
Results of Analysis of NIST Standard Reference Material 2711
“Montana Soil (Moderately Elevated Trace Element Concentrations)” Using Method 3050B
(μg/g ± SD)
Atm. PressureMicrowaveAssisted Methodwith Power Control
107 ± 4.61240 ± 68330 ± 17NA22 ± 0.3515 ± 0.2
Atm. PressureMicrowaveAssisted Methodwith TemperatureControl (gas-bulb)
98 ± 51130 ± 20312 ± 239.6 ± 3.921 ± 117 ± 2
Atm. PressureMicrowaveAssisted Methodwith TemperatureControl (IR-sensor)
98 ± 3.81120 ± 29307 ± 1240.9 ± 1.915 ± 1.115 ± 1.6
NIST LeachableConcentrations Using
Method 3050
1001100310402016
NIST Certified Values for
Total Digestion(μg/g ±95% CI)
114 ± 21162 ± 31350.4 ± 4.841.7 ± 0.25
47*20.6 ± 1.1
ElementHot-Plate
CuPbZnCdCrNi
111 ± 6.41240 ± 38340 ± 13NA23 ± 0.916 ± 0.4
NA - Not Available
* Non-certified values, for information only.
CD-ROM3050B - 11
Revision 2December 1996
METHOD 3050B
ACID DIGESTION OF SEDIMENTS, SLUDGES, AND SOILS
CD-ROM3050B - 12
Revision 2December 1996
EPA 3050B-1996
