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151 related items for PubMed ID: 18967235

  • 1. Preconcentration of trace cobalt with the ion pair of 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol and tetraphenylborate onto microcrystalline naphthalene or column method and its determination by derivative spectrophotometry.
    Pancras JP, Puri BK, Taher MA, Dehzoei AM, Sheibani A.
    Talanta; 1998 Aug; 46(5):1107-13. PubMed ID: 18967235
    [Abstract] [Full Text] [Related]

  • 2. Ammonium tetraphenylborate-naphthalene adsorbent for the preconcentration and trace determination of iron in alloys and biological samples using 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol by third derivative spectrophotometry.
    Ali Taher M, Krishan Puri B.
    Talanta; 1996 Feb; 43(2):247-53. PubMed ID: 18966485
    [Abstract] [Full Text] [Related]

  • 3. Atomic absorption spectrometric determination of ultra trace amounts of zinc after preconcentration with the ion pair of 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol and ammonium tetraphenylborate on microcrystalline naphthalene or by column method.
    Taher MA.
    Talanta; 2000 Jun 21; 52(2):181-8. PubMed ID: 18967975
    [Abstract] [Full Text] [Related]

  • 4. Flame atomic absorption spectrometric determination of trace amounts of manganese in alloys and biological samples after preconcentration with the ion pair of 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol and ammonium tetraphenylborate on microcrystalline naphthalene or by column method.
    Taher MA.
    Anal Sci; 2001 Aug 21; 17(8):969-73. PubMed ID: 11708102
    [Abstract] [Full Text] [Related]

  • 5. Preconcentration of trace nickel with the ion pair of disodium 1-nitroso-2-naphthol-3,6-disulfonate and tetradecyldimethylbenzylammonium chloride on microcrystalline naphthalene or by the column method and determination by third derivative spectrophotometry.
    Taher MA.
    Talanta; 1999 Oct 21; 50(3):559-67. PubMed ID: 18967745
    [Abstract] [Full Text] [Related]

  • 6. Flame atomic absorption spectrometric determination of trace chromium in various standard samples after preconcentration with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol.
    Taher MA.
    Fresenius J Anal Chem; 2000 Oct 21; 368(4):421-3. PubMed ID: 11227516
    [Abstract] [Full Text] [Related]

  • 7. A solid liquid extraction and preconcentration method for the atomic absorption spectrometric determination of trace cobalt in various alloys and biological samples.
    Taher MA, Bansal H, Puri BK.
    Ann Chim; 2001 Oct 21; 91(9-10):649-58. PubMed ID: 11770164
    [Abstract] [Full Text] [Related]

  • 8. Derivative spectrophotometric determination of iridium after preconcentration of its 1-(2-pyridylazo)-2-naphthol complex on microcrystalline naphthalene.
    Taher MA, Puri S, Bansal RK, Puri BK.
    Talanta; 1997 Dec 19; 45(2):411-6. PubMed ID: 18967020
    [Abstract] [Full Text] [Related]

  • 9. Atomic absorption spectrometric determination of trace zinc in alloys and biological samples after preconcentration with [1-(2-pyridylazo)-2-naphthol] on microcrystalline naphthalene.
    Taher MA.
    Analyst; 2000 Oct 19; 125(10):1865-8. PubMed ID: 11070556
    [Abstract] [Full Text] [Related]

  • 10. Column preconcentration of trace manganese with the ion pair of 2-nitroso-1-naphthol-4-sulfonic acid tetradecyldimethylbenzyl-ammonium chloride supported on naphthalene and determination by derivative spectrophotometry.
    Taher MA, Puri BK, Malik AK.
    Ann Chim; 2001 Oct 19; 91(5-6):319-30. PubMed ID: 11507836
    [Abstract] [Full Text] [Related]

  • 11. Column preconcentration and FAAS determination of copper, iron, nickel and zinc using 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol-tetraphenylborate-naphthalene adsorbent.
    Pancras JP, Puri BK.
    Anal Bioanal Chem; 2002 Dec 19; 374(7-8):1306-11. PubMed ID: 12474102
    [Abstract] [Full Text] [Related]

  • 12. Trace determination of zinc in standard alloys, environmental and pharmaceutical samples by fourth derivative spectrophotometry using 1-2-(thiazolylazo)-2-naphthol as reagent and ammonium tetraphenylborate supported on naphthalene as adsorbent.
    Bhalotra A, Puri BK.
    Talanta; 1999 Jul 19; 49(3):485-93. PubMed ID: 18967622
    [Abstract] [Full Text] [Related]

  • 13. Preconcentration of iron (III), cobalt (II) and copper (II) nitroso-R complexes on tetradecyldimethylbenzylammonium iodide-naphthalene adsorbent.
    Puri BK, Balani S.
    Talanta; 1995 Mar 19; 42(3):337-44. PubMed ID: 18966235
    [Abstract] [Full Text] [Related]

  • 14. Determination of trace levels of manganese in various biological and environmental samples by atomic absorption spectrometry after solid-liquid extraction and preconcentration with the ion pair formed by the nitroso-S anion and the tetradecyldimethylbenzylammonium cation.
    Taher MA, Dehzoei AM.
    J AOAC Int; 2001 Mar 19; 84(3):706-12. PubMed ID: 11417635
    [Abstract] [Full Text] [Related]

  • 15. Differential pulse polarography determination of indium after column preconcentration with [1-(2-pyridylazo)-2-naphthol]-naphthalene adsorbent or its complex on microcrystalline naphthalene.
    Taher MA.
    Talanta; 2000 Jun 21; 52(2):301-9. PubMed ID: 18967989
    [Abstract] [Full Text] [Related]

  • 16. Natural analcime zeolite modified with 5-Br-PADAP for the preconcentration and anodic stripping voltammetric determination of trace amount of cadmium.
    Afzali D, Mostafavi A, Taher MA, Rezaeipour E, Khayatzadeh Mahani M.
    Anal Sci; 2005 Apr 21; 21(4):383-6. PubMed ID: 15844330
    [Abstract] [Full Text] [Related]

  • 17. Differential pulse polarographic determination of tin in alloys and environmental samples after preconcentration with the ion pair of 2-nitroso-1-naphthol-4-sulfonic acid and tetradecyldimethylbenzylammonium chloride onto microcrystalline naphthalene or by column method.
    Taher MA, Puri BK.
    Talanta; 1999 Feb 21; 48(2):355-62. PubMed ID: 18967473
    [Abstract] [Full Text] [Related]

  • 18. Thermal modified Kaolinite as useful material for separation and preconcentration of trace amounts of manganese ions.
    Afzali D, Taher MA, Mostafavi A, Mobarakeh SZ.
    Talanta; 2005 Jan 30; 65(2):476-80. PubMed ID: 18969822
    [Abstract] [Full Text] [Related]

  • 19. Flame atomic absorption spectrometric determination of trace amounts of nickel after extraction and preconcentration onto natural modified analcime zeolite loaded with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol.
    Afzali D, Taher MA, Mostafavi A, Mahani MK.
    J AOAC Int; 2005 Jan 30; 88(3):842-6. PubMed ID: 16001860
    [Abstract] [Full Text] [Related]

  • 20. Column preconcentration of titanium in aluminium and zinc alloys with oxalic acid-ascorbic acid and the ion-pair of sodium 1,2-dihydroxybenzene-3,5-disulphonic acid and tetradecyldimethylbenzylammonium chloride supported on naphthalene using spectrometry.
    Satake M, Nagahiro T, Puri BK.
    Talanta; 1992 Oct 30; 39(10):1349-54. PubMed ID: 18965540
    [Abstract] [Full Text] [Related]

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