Gravimetric determination of palladium with salicyloylhydrazide

Shome, S.C.; Das, H.R.

doi:10.1016/s0003-2670(00)88960-6

Cited by 5 publications

(2 citation statements)

References 1 publication

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“…Palladium complexes with thiosemicarbazide, dimethylglyoxime, thiocarbohydrazide and salicyloylhydrazide were prepared and purified as per the reported procedures. [27][28][29] A known weight of the complex was carefully decomposed with minimum amount of aqua-regia and evaporated to near dryness. The residue was dissolved with minimum amount of dilute HCl and made up to a known volume using double distilled water.…”

Section: Determination Of Palladium In Complexesmentioning

confidence: 99%

4‐(N,N‐Diethylamino) Benzaldehyde Thiosemicarbazone in the Spectrophotometric Determination of Palladium

et al. 2007

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4-(N,N-diethylamino)benzaldehyde thiosemicarbazone(DEABT) is proposed as a sensitive and selective analytical reagent for the spectrophotometric determination of palladium(II). The reagent reacts with palladium (II) in a potassium hydrogen phthalate-hydrochloric acid buffer of pH 3.0, to form a yellow complex. Beer's law is obeyed in the concentration range up to 3.60 microgmL(-1). The optimum concentration range for minimum photometric error as determined by Ringbom plot method is 0.36 - 3.24 microg mL(-1). The yellow Pd(II)-DEABT complex shows a maximum absorbance at 408 nm, with molar absorptivity of 3.33 x 10(4) dm3 mol(-1) cm(-1) and Sandell's sensitivity of the complex from Beer's data, for D = 0.001, is 0.0032 microg cm(-2). The composition of the Pd(II)-DEABT complex is found to be 1:2 (M:L). The interference of various cations and anions in the method were studied. The proposed method was successfully used for the determination of Pd(II) in alloys, catalysts, complexes and model mixtures with a fair degree of accuracy.

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Section: Determination Of Palladium In Complexesmentioning

confidence: 99%

4‐(N,N‐Diethylamino) Benzaldehyde Thiosemicarbazone in the Spectrophotometric Determination of Palladium

et al. 2007

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“…Palladium(II) complexes with dimethylglyoxime, thiosemicarbazide, 1,2,3-benzotriazole, thiocarbohydrazide were prepared and purified according to the reported methods [22][23][24][25] and catalysts such as palladium on asbestos(CDH, 5%) and activated charcoal(CDH, 5%) are used for the analysis. A known weight of the complex and catalyst were carefully decomposed with aqua regia by evaporating to near dryness.…”

Section: Analysis Of Palladium Complexes and Catalystsmentioning

confidence: 99%

Complexometric Determination of Palladium(II) Using Thioacetamide as a Selective Masking Agent

et al. 2006

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A simple, rapid and accurate complexometric method for the determination of palladium(II) is proposed, based on the selective masking property of thioacetamide towards palladium(II). In the presence of diverse metal ions, palladium(II) is complexed with excess of EDTA and the surplus EDTA is back titrated at pH 5-5.5 (acetic acid-sodium acetate buffer) with standard lead nitrate solution using xylenol orange as indicator. An excess of a 0.5% aqueous solution of thioacetamide is then added to displace EDTA from Pd(II)-EDTA complex. The released EDTA is titrated with the same standard lead nitrate solution as before. Reproducible and accurate results are obtained in the concentration range 0.5 mg - 17.80 mg of palladium with relative error of +/- 0.16% and coefficient of variation not exceeding 0.26%. The effect of diverse ions is studied. The method is used for the determination of palladium in its complexes, catalysts and synthetic alloy mixtures.

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Separation and Determination of Isoflavonoids in Several Kudzu Samples by High‐Performance Capillary Electrophoresis (HPCE)

et al. 2006

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Pueraria lobata is a rich source of isoflavonoids. The detection and identification of isoflavonoid components from root, stem, leaf, callus and cell samples, is very important for the best, safest and most efficacious use of kudzu as a medicinal plant, and for the studies on quantitative analysis in the secondary metabolism of isoflavonoids. In this paper, a simple, rapid and precise high-performance capillary electrophoresis (HPCE) method with diode array detection (DAD) has been developed for separation and determination of isoflavonoids in several kudzu samples. The isoflavonoids could be well separated within 15 min in a 40 cm length capillary at a separation voltage of 15kV in a 30 mmol L(-1) borax buffer (pH9.29), and this proposed method demonstrated excellent reproducibility and accuracy with relative standard deviations of less than 5% for isoflavonoid content (n = 5) of different kudzu samples. The relationship between peak areas and isoflavone concentrations, in a specified working range with linear response, was determined by first-order polynomial regression over the range 0.05-0.5 mg mL(-1) for puerarin and 2.5-50 microg mL(-1) for 3'-methoxypuerarin, daidzin and daidzein, respectively, and quantitative evaluation of those four main isoflavonoid components was determined by ultraviolet absorption at lambda = 192 nm. The differences were also illustrated by comparison of the determination of isoflavonoid components from kudzu root, stem, leaf samples and plant tissue cultures in vitro.

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Gravimetric determination of palladium with salicyloylhydrazide

Cited by 5 publications

References 1 publication

4‐(N,N‐Diethylamino) Benzaldehyde Thiosemicarbazone in the Spectrophotometric Determination of Palladium

4‐(N,N‐Diethylamino) Benzaldehyde Thiosemicarbazone in the Spectrophotometric Determination of Palladium

Complexometric Determination of Palladium(II) Using Thioacetamide as a Selective Masking Agent

Separation and Determination of Isoflavonoids in Several Kudzu Samples by High‐Performance Capillary Electrophoresis (HPCE)

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