Abstract:
Since 1990's,it has become a hotspot to use the δ
11B-pH technique to reconstruct the pH of seawater through δ
11B in marine biogenetic carbonates.Although plenty of papers have been devoted to this topic,there are still a lot of technical problems due to the incompletion in theory, that constrain the further application of the method. We discussed in this paper some uncertain factors of the δ
11B-PH technique, including the pKa, ionization constant of B(OH)3,δ
11Bsw of the seawater,δ
11B in B(OH)
4-,and the fractionation factor α between B(OH)
4- and B(OH)
3.Suggestions are made for future studies to improve the method for paleoceangraphic investigations.