Mori I, Taguchi K, Fujita Y, Matsuo T
Osaka University of Pharmaceutical Sciences, 2-10-65, Kawai, 580, Matsubara, Osaka, Japan.
Anal Bioanal Chem. 1995 Sep;353(2):174-5. doi: 10.1007/s0021653530174.
An improved spectrophotometric determination of uranium(VI) is proposed using 4-(2-pyridylazo)resorcinol(PAR) in the presence of benzyldimethylstearyltrimethylammonium chloride(BSTAC) as a cationic surfactant. The calibration graph is linear in the range of 0.3-60 microg/10 ml uranium(VI), measuring the absorbance at 550 nm. The reproducibility for 19.0 microg/10 ml uranium(VI) is 0.57%. The third-derivative method using the third-derivative distance (d(3)A/dlambda(3)) among lambda(1) 530 nm, lambda(3) 594 nm and lambda(2) 565 nm was also investigated.
提出了一种改进的分光光度法测定铀（VI），该方法使用4-（2-吡啶偶氮）间苯二酚（PAR），并以苄基二甲基硬脂基三甲基氯化铵（BSTAC）作为阳离子表面活性剂。校准曲线在0.3 - 60微克/10毫升铀（VI）范围内呈线性，于550纳米处测量吸光度。对于19.0微克/10毫升铀（VI），重现性为0.57%。还研究了使用在530纳米（λ1）、594纳米（λ3）和565纳米（λ2）之间的三阶导数距离（d(3)A/dλ(3)）的三阶导数法。
