1. Kirby HW. Decay and growth tables for naturally occurring radioactive series. Anal Chem. 1954;26(6):1063–1071. Google Scholar

2. Sill C. Determination of radium-226, thorium-230, and thorium-232; Rep. No. TID 7616 (Oct.). Washington DC: U.S. Atomic Energy Commission; 1960. Google Scholar

3. Goldin AS. Determination of dissolved radium. Anal Chem. 1961;33(3):406–409. Google Scholar

4. Hallden NA, Harley JH. An improved alpha-counting technique. Anal Chem. 1960;32(13):1861–1863. Google Scholar

1. Hursh JB. Radium content in public water supplies. J Amer Water Works Assoc. 1954:46(1):43–54. Google Scholar

2. Rushing DE, Garcia WJ, Clark DA. The analysis of effluents and environmental samples from uranium mills and of biological samples for radium, polonium, and uranium. In: Radiological health and safety in mining and milling of nuclear materials. Vienna, Austria: International Atomic Energy Agency; 1964, Vol. 11, p. 187. Google Scholar

3. Lucas HF. Improved low-level alpha scintillation counter for radon. Rev Sci Instrum. 1957;28:680–683. Google Scholar

4. Rushing DE. Determination of dissolved radium-226 in water. J Amer Water Works Assoc. 1967;59(5):593–600. Google Scholar

Johnson JO. Determination of radium-228 in natural waters. Radiochemical Analysis of Water; U.S. Geological Survey. Water Supply Paper 1696-G. Washington DC: U.S. Government Printing Office; 1971. Google Scholar

Krieger HL. Interim radiochemical methodology for drinking water; EPA-600/4-75-008 (revised). Cincinnati (OH): Environmental Monitoring and Support Laboratory, U.S. Environmental Protection Agency; 1976. Google Scholar

Krieger HL, Whittaker EL. Prescribed procedures for measurement of radioactivity in drinking water; EPA-600/4-80-032. Cincinnati (OH): Environmental Monitoring and Support Laboratory, U.S. Environmental Protection Agency; 1980. Google Scholar

Currie LA. Limits for qualitative detection and quantitative determination. Application to radiochemistry. Anal Chem. 1968;40(3):586–593. Google Scholar

Colle R, Abee HH, Cohen LK, Eisenhower EH, Jarvis AN, Fisenne IM, Jackson M, Johnson RH Jr, Olson D, Peel J. Reporting of environmental radiation measurements data. In: Upgrading environmental radiation data; EPA 520/1-80-012. Washington DC: U.S. Environmental Protection Agency; 1980. Google Scholar

Kahn G, Rosson B, Cantrell J. Analysis of ²²⁸Ra and ²²⁶Ra in public water supplies by a gamma-ray spectrometer. Health Phys. 1990;59(1):125–131. Google Scholar

Goheen SC. DOE Methods for evaluating environmental and waste management samples. Richland (WA): Office of Environmental Restoration and Waste Management, Pacific Northwest National Laboratory, U.S. Department of Energy; 1997. Google Scholar

New Jersey Department of Health and Senior Services. Determination of radium-224 in drinking water, Revision 3; November. Trenton: N.J. Department of Health and Senior Services; 1998. Google Scholar

Parsa B. Contribution of short-lived radionuclides to alpha-particle radioactivity in drinking water and their impact on the Safe Drinking Water Act Regulations. Radioact Radiochem. 1998;9:41. Google Scholar

Szabo Z, DePaul VT, Kraemer TF, Parsa B. Comparison of two gamma-spectroscopic approaches for determining radium-224 concentration in ground water. 40th Rocky Mountain Conference on Analytical Chemistry. 1998 July 25-Aug 1; Denver (CO). Google Scholar

Georgia Institute of Technology. Method for determination of radium-228 and radium-226 in drinking water by gamma-ray spectrometry using HPGE or Ge(Li) detectors. Atlanta (GA): Environmental Resource Center; 2003. Google Scholar

DeHart JM. The results of a validation study for a method to eetermine the radium-226 and radium-228 content of drinking water with gamma spectrometry. Prepared in support of work assignment 2-04, EPA contract No. 68-C-98-139, Alexandria (VA): 2003. Google Scholar

Parsa B, Obed RN, Nemeth WK, Suozzo G. Concurrent determination of ²²⁴Ra, ²²⁶Ra, ²²⁸Ra, and unsupported ²¹²Pb in a single analysis for drinking water and wastewater: dissolved and suspended fractions. Health Phys. 2004;86(2):145–149. Google Scholar