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Spectrophotometric Determination of Palladium(II) with New Re Agent N‐octyl‐N′‐(Sodium P‐Amminobenzenesulfonate)Thiourea (OPT)
Author(s) -
Ma DongLan,
Li Ying,
Ltf QuanJian,
Wang YuLu
Publication year - 2001
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.200100164
Subject(s) - chemistry , thiourea , palladium , reagent , molar absorptivity , ammonium bromide , color reaction , selectivity , buffer solution , bromide , absorption (acoustics) , sodium , nuclear chemistry , catalysis , inorganic chemistry , chromatography , pulmonary surfactant , organic chemistry , biochemistry , physics , acoustics , optics
The color reaction of palladium(II) with the new reagent OPT was studied. In the presence of cetyltrimethyl ammonium bromide (CTMAB), in pH 5.0–5.6 HAc‐NaAc buffer solution, a yellow‐brown soluble complex with the ratio of 1:4 was formed. The maximum absorption was at 299.0 nm, the apparent molar absorptivity ϵ 299.0 nm = 1.38×10 5 l mol −1 cm −1 . Beer's law was obeyed in the range of 2–12 μg Pd(II)/25 mL. The method's sensitivity and selectivity were very good. It could be used to determine palladium(II) in a catalyst with satisfactory results.