4-(N,N-diethylamino) benzaldehyde thiosemicarbazone in the spectrophotometric determination of palladium

P. Parameshwara, J. Karthikeyan, A. Nityananda Shetty, Prakash Shetty

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

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 μgmL-1. The optimum concentration range for minimum photometric error as determined by Ringbom plot method is 0.36-3.24 μg mL-1. The yellow Pd(II)-DEABT complex shows a maximum absorbance at 408 nm, with molar absorptivity of 3.33 × 104 dm3 mol-1 cm-1 and Sandell's sensitivity of the complex from Beer's data, for D=0.001, is 0.0032 μg 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.

Original languageEnglish
Pages (from-to)1097-1106
Number of pages10
JournalAnnali di Chimica
Volume97
Issue number10
DOIs
Publication statusPublished - 01-10-2007

Fingerprint

Thiosemicarbazones
palladium
Palladium
Hydrochloric acid
Potassium
Negative ions
Hydrochloric Acid
Positive ions
phthalate
hydrochloric acid
absorbance
Hydrogen
Catalysts
Anions
Cations
anion
Buffers
potassium
cation
catalyst

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Environmental Science(all)

Cite this

Parameshwara, P. ; Karthikeyan, J. ; Shetty, A. Nityananda ; Shetty, Prakash. / 4-(N,N-diethylamino) benzaldehyde thiosemicarbazone in the spectrophotometric determination of palladium. In: Annali di Chimica. 2007 ; Vol. 97, No. 10. pp. 1097-1106.
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4-(N,N-diethylamino) benzaldehyde thiosemicarbazone in the spectrophotometric determination of palladium. / Parameshwara, P.; Karthikeyan, J.; Shetty, A. Nityananda; Shetty, Prakash.

In: Annali di Chimica, Vol. 97, No. 10, 01.10.2007, p. 1097-1106.

Research output: Contribution to journalArticle

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AU - Parameshwara, P.

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AU - Shetty, Prakash

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AB - 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 μgmL-1. The optimum concentration range for minimum photometric error as determined by Ringbom plot method is 0.36-3.24 μg mL-1. The yellow Pd(II)-DEABT complex shows a maximum absorbance at 408 nm, with molar absorptivity of 3.33 × 104 dm3 mol-1 cm-1 and Sandell's sensitivity of the complex from Beer's data, for D=0.001, is 0.0032 μg 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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