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Träfflista för sökning "WFRF:(Szabó Zoltán) srt2:(1986-1989)"

Sökning: WFRF:(Szabó Zoltán) > (1986-1989)

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1.
  • Tóth, I., et al. (författare)
  • Application of a sulphide-selective electrode in the absence of a pH-buffer
  • 1988
  • Ingår i: Talanta. - : Elsevier BV. - 0039-9140 .- 1873-3573. ; 35:10, s. 783-788
  • Tidskriftsartikel (refereegranskat)abstract
    • Calibration of a sulphide electrode in the pH-range 9-12 has been studied as an e.m.f. vs. (pH - p[HS-]) function by measuring e.m.f. and pH in parallel. Calibration can also be done in this pH range by using a differential amplifier with a three-electrode measuring cell (glass, sulphide-selective and reference electrodes). The effects of an antioxidant (ascorbic acid) and a complexing agent (DCTA) on the calibration of the glass-sulphide electrode cell at pH < 5 were studied. The applicability of this end-point indicator cell has been demonstrated for titrations of Ag+, Pb2+ and Bi3+ with Na2S.
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2.
  • Toth, I., et al. (författare)
  • STUDIES ON THE EXTRACTION OF GALLIUM AND ALUMINIUM WITH DIALKYL-DITHIOPHOSPHORIC ACIDS.
  • 1986
  • Ingår i: Reactive polymers. Ion exchangers, sorbents. - : Elsevier BV. - 0167-6989. ; 7:2-3
  • Tidskriftsartikel (refereegranskat)abstract
    • The extraction of Ga**3** plus has been studied with the liquid cation exchangers di-n-butyl-dithiophosphoric acid (DBTPA) and di-(2-ethylhexyl)-dithiophosphoric acid (DETPA) in kerosene. The partition of Ga**3** plus and Al**3** plus has been studied between equal volumes of aqueous and organic phases. The extraction coefficients obtained with DETPA are about one order of magnitude higher than those obtained with DBTPA. The trend of the extraction coefficients with increasing pH can be interpreted assuming the extraction of species M(DBTPA)//3 and M(DETPA)//3. The extraction coefficients are about two orders of magnitude higher for Ga**3** plus than for Al**3** plus . The extent of extraction of both Ga**3** plus and Al**3** plus decreases at higher pH and at pH less than 10 there is practically no extraction.
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  • Resultat 1-2 av 2
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tidskriftsartikel (2)
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refereegranskat (2)
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Szabo, Zoltan, Assoc ... (2)
Toth, I. (2)
Solymosi, P. (1)
Brücher, E. (1)
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Kungliga Tekniska Högskolan (2)
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Engelska (2)
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Naturvetenskap (2)

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