@article{oai:kitami-it.repo.nii.ac.jp:00006514,
 author = {Sadanobu, INOUE and Mitsuo, SASAKI},
 issue = {2},
 journal = {北見工業大学研究報告},
 month = {Mar},
 note = {application/pdf, The extraction-spectropholometric determination of a trace amount of tetrabutylammonium ion (tba^+) with bis (maleonitriledithiolato) nickelate (II), Ni (mnt)^<2->_2 is described. Ni (mnt)^<2->_2 formed ion-pair with tba^+ and this was quantitatively extracted into chloroform (Kex＝[tba^+_2, Ni (mnt)^<2->_2]_(0)/[Ni (mnt^<2->_2] [tba^+]^2=10^<13.89>]. The molar absorptivity of the ion-pair in chloroform was found to be 2.76×10^4 at 318 nm. Bee's law was confirmed in the range of 0?0.6μmol tba^/10cm~3 CHCL_3. Moderate amounts of most of the anions did not interfere with the determination. This method was also successfully applied to estimation of the ion-pair extraction constant.},
 pages = {221--224},
 title = {Spectrophotometric Method for the Determination of Tetrabutylammonium ion*},
 volume = {12},
 year = {1981}
}