RESL chemists perform radiochemical, stable inorganic, and organic analyses and measurements on a variety of environmental and programmatic samples in a broad range of matrices such as water, soil, vegetation, air filters, and urine and feces. They also prepare standards and performance evaluation samples in a similar range of sample matrices. Much of the analytical chemistry effort at RESL supports two large programs that reside at the laboratory. The programs are the Mixed-Analyte Performance Evaluation Program (MAPEP) and DOE Laboratory Accreditation Program (DOELAP). RESL has been designated as the DOE reference laboratory for these programs. In addition, RESL scientists also provide other analytical services, especially in radiochemistry, to other agencies such the United States Geological Survey, the Nuclear Regulatory Commission, and the Army. When requested, special analyses can be performed and standards prepared on a work-for-others basis. Custom techniques and methodologies can be developed for more difficult matrices to meet customer needs. Examples include: radiochemical analyses of liquid waste, soil tailings, and crushed slag from nuclear power-utilities; microwave digestion of inorganic elements from different types of matrices utilizing Inductively-Coupled Plasma detection systems; and microwave extraction and analysis of organic compounds from different matrices utilizing Gas Chromatography - Mass Spectrometry detection systems.
Alpha Spectrometry
Gamma Spectrometry
Gas
Flow Proportional Counting
Liquid Scintillation
Cerenkov Counting
Gross Alpha, Beta, and Gamma Counting
2-Pi Counting of Alpha Emitters
The analysis of inorganic elements and metals encompass most of the periodic chart from lithium to uranium. Microwave digestion capabilities provide greater flexibility for the dissolution of various matrices. Instrumentation and uses include:
- Quantification of elements from parts per billion through parts per million (ppm)
- Identification/quantification of elements from parts per quadrillion through low ppm
Analysis of organic compounds encompass pesticides, semi-volatile and volatile organic compounds. Various extraction techniques, primarily microwave extraction of organic compounds from various matrices, provide versatile extraction capabilities. Instrumentation and uses include:
RESL is internationally recognized for research and development of radiochemical methods. Numerous publications in actinide research and research for radioanalytical chemistry in general, bioassay, and whole body counting have resulted from RESL scientist's work. Several ASTM Standard Methods for analysis of radionuclides in environmental samples can be attributed to the scientists from RESL. RESL work has resulted in a patent for the addition of environmental constituents to soil samples utilizing microencapsulation technology.