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The possibility of using thermal lensing spectrophotometry (TLS) for the quantitative determination of chemical equilibria in very dilute aqueous solution has been explored. The hydrolysis of uranium(IV) has been used as a test case. TLS was found to be a convenient, precise and rapid method to obtain information about mononuclear hydrolysis. This is difficult to obtain with more traditional solution chemical methods. The TLS data were obtained at 25 C in the concentration range of (-log[H+]) between 0 and 2.8 using a 3M (Na,H)ClO(4) ionic medium. Apart from its higher sensitivity, the TLS method has the same characteristics as ordinary spectrophotometric methods. The experimental results of this study and previous literature information were interpreted using the specific ion interaction theory.

Additional information

Authors: GRENTHE I, Royal Institute of Technology (KTH), Stockholm (SE);BIDOGLIO G, JRC Ispra Estab. (IT);OMENETTO N, JRC Ispra Estab. (IT)
Bibliographic Reference: Article: Inorganic Chemistry, Vol. 28 (1989), No. 1, pp. 71-74
Record Number: 198910575 / Last updated on: 1994-12-01
Original language: en
Available languages: en