Reference Articles:

1. Carlson, R. M., and J. L. Paul "Potentiometric determination of boron as tetrafluoroborate" Anal. Chem., 40, 1292 (1968) 2. Carlson, R. M., and J. L. Paul "Potentiometric determination of boron in agriculture samples" Soil Sci., 108, 266 (1969) 3. Gulens, J., and P. K. Leeson "Direct ion-selective determination of micromolar boron as tetrafluoroborate" Anal. Chem., 52, 2235 (1980) 4. Imato, T., T. Yoshizuka, and N. Ishibashi "Potentiometric flow-injection determination of boron using a flow-through tetrafluoroborate ion-selective poly(vinylchloride) membrane electrode" Anal. Chim. Acta, 233, 139 (1990) 5. Johnson, M. L., and W. G. Ward " Analysis of boric acid by tetrafluoroborate specific ion electrode" Met. Finish., (Nov.), 49 (1988) 6. Kluger, F., and C. Koeberl "Determination of boron at low abundance levels in geological materials with a tetrafluoroborate-selective electrode" Anal. Chim. Acta, 175, 127 (1985) 7. Wilde, H. E. "Potentiometric determination of boron in aluminium oxide-boron carbide using an ion specific electrode" Anal. Chem., 45, 1526 (1973)