Extraction, spectrophotometric and atomic absorption spectrophotometric determination of tellurium with n-phenylbenzohydroxamic acid

Journal Article · Wed Dec 31 23:00:00 EST 1986 · Anal. Lett.; (United States)

DOI:https://doi.org/10.1080/00032718708082232· OSTI ID:6478602

Desai, K H; Agrawal, Y K

Solvent extraction, spectrophotometric and atomic absorption spectrophotometric determination of tellurium-(IV) in nanogram levels are described. The tellurium(IV) forms yellow colored complex with N-phenylbenzohydroxamic acid (PBHA) which is extractable into chloroform from 7 M HClO/sub 4/. Te-PBHA complex has a maximum absorbance at 345 nm with the molar absorptivity 3.5 x 10/sup 4/ 1 mol/sup -1/ cm/sup -1/ and Sandell's sensitivity 0.00365 ..mu..g/cm/sup 2/. The tellurium(IV) is also determined in the range of 0.01 - 0.08 ppm by flameless atomic absorption spectrophotometry using GBC HG 900 vapor generation accessory. Effect of molarity, reagent concentrations, diverse ions on the extraction of tellurium complex were studied. The tellurium was determined in presence of selenium and also in standard samples.

• Research Organization: M.S. Univ. of Baroda, India
• OSTI ID: 6478602
• Journal Information: Anal. Lett.; (United States), Journal Name: Anal. Lett.; (United States) Vol. 20:1; ISSN ANALB
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
400105 -- Separation Procedures
ABSORPTION SPECTROSCOPY
CHEMICAL ANALYSIS
CHLORINATED ALIPHATIC HYDROCARBONS
CHLOROFORM
DATA
ELEMENTS
EXPERIMENTAL DATA
EXTRACTION
HALOGENATED ALIPHATIC HYDROCARBONS
INFORMATION
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
SELENIUM
SEMIMETALS
SEPARATION PROCESSES
SOLVENT EXTRACTION
SOLVENT PROPERTIES
SPECTROPHOTOMETRY
SPECTROSCOPY
TELLURIUM
TRACE AMOUNTS