1. Loghry, R.A. and Boyles, W.: “On-site Analysis Improves Heavy Brine Gelation,” Pet. Eng. Intl. (Jan. 1990) 42–48.
2. Thomas, D.C., Kinney, W.R., Darlington, R.K., and Lowell, J.L.: “Reduce Completion Fluid Costs with On-site Brine Tests,” World Oil (Sept. 1982) 105–116.
3. Bertin, E.P.: Principles and Practice of X-ray Spectrometric Analysis, 2 edition. Plenum Press, New York, NY (1975).
4. Takahashi, Y. and Rey, M.: “A Dedicated XRF Analyzer for Sulfur in Oils,” Amer. Laboratory (1983) 15, No. 11, 27–42.
5. Renault, J.: “Rapid Determination of Ash in Coal by Compton Scattering, Ca, and Fe X- ray Fluorescence,” Advances in X-ray Analysis, Plenum Press, New York, NY (1979) 23, 45–55.