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- W285928725 abstract "Palladium has been used in various ways as a hydrogenation catalyst, microcontactors in the electronics, hard alloy in dentistry and in the last few years as a component in the three-way catalysts in automobile exhaust catalytic beads. Due to the introduction of palladium, platinum and rhodium for use in catalytic converters in motor vehicles, the emission of these metals into the environment has increased. In addition, an increased uptake of palladium by plants has led to soil pollution. Palladium is thought to be one of the strongest allergens from a health hazard viewpoint. For these reasons, establishing rapid and accurate methods for the determination of palladium for industrial process, quality and pollution control is important. Many sensitive methods, such as spectrofluorimetry, X-ray fluorescence spectrometry, neutron activation analysis, atomic absorption spectrometry have widely been used for the determination of palladium. However, spectrophotometric methods have gained popularity for palladium determination as advantageous in respect of simplicity and low operating costs. A wide variety of spectrophotometric reagents, such as azo dyes, rhodanine derivatives, porphyrin ligands, thiourea derivatives, 8aminoquinoline derivatives and nitroso dye have been developed for the determination of palladium. In our previous work, some 2-quinolylazo reagents were reported for the determination of metal ions. These reagents have a higher sensitivity than that of pyridylazo reagents because of its larger conjugated system. However, the use of these reagents for the determination of palladium has not been reported yet. We had synthesized 2-(2quinolylazo)-5-diethylaminobenzoic acid (QADEAB) and used it to the determination of cobalt. This reagent has high sensitivity. In this paper, we thoroughly studied the color reaction of QADEAB with palladium. The results show that QADEAB is a highly sensitive, selective and convenience reagent for palladium. Based on this, a highly sensitive, selective and convenient method for the determination of palladium in water and catalyst was developed." @default.
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- W285928725 date "2005-10-20" @default.
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- W285928725 title "Spectrophotometric Determination of Palladium by the Colouration with 2-(2-Quinolylazo)-5-diethylaminobenzoic Acid" @default.
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- W285928725 doi "https://doi.org/10.5012/bkcs.2005.26.10.1623" @default.
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