https://commons.ru.ac.za/vital/access/manager/Index en-us 5 https://commons.ru.ac.za/vital/access/manager/Repository/vital:73732 Wed 03 Jul 2024 10:45:09 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:74571 Tue 30 Jul 2024 11:04:30 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:54490 Tue 14 May 2024 10:23:45 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:74729 Tue 06 Aug 2024 12:58:17 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:57084 Thu 29 Sep 2022 22:30:33 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:57081 Thu 29 Sep 2022 22:21:11 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:57076 Mn(II)Pc > Fe(II)Pc > Ni(II)Pc > Cu(II)Pc > H2Pc > Zn(II)Pc > GCE. When [Co(II)TSPc]4− (TSPc=tetrasulfo Pc) was added to aqueous solutions containing the cresols and phenols, an enhancement of the oxidation currents was also observed.]]> Thu 29 Sep 2022 19:52:36 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:57073 5 μg ml−1) are determined by adsorptive cathodic stripping voltammetry (AdCSV) on a mercury film glassy carbon electrode, using catechol, 4-methylcatechol, 4-t-butylcatechol and resorcinol as complexing ligands. Complexes of lead, copper and bismuth with resorcinol showed the largest increase in current with increase in metal concentration, whereas complexes of these metals with 4-t-butylcatechol showed the lowest current response. Cadmium showed a different behaviour from the other three metals in that the highest current response was observed with 4-methylcatechol. The four metals could be determined simultaneously in the presence of resorcinol, although considerable interference was observed between bismuth and copper.]]> Thu 29 Sep 2022 19:45:39 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:57072 Thu 29 Sep 2022 19:40:58 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:73490 Thu 20 Jun 2024 08:41:18 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:73498 Thu 20 Jun 2024 08:31:45 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:57074 5 μg ml−1) are determined by adsorptive cathodic stripping voltammetry (AdCSV) on a mercury film glassy carbon electrode, using catechol, 4-methylcatechol, 4-t-butylcatechol and resorcinol as complexing ligands. Complexes of lead, copper and bismuth with resorcinol showed the largest increase in current with increase in metal concentration, whereas complexes of these metals with 4-t-butylcatechol showed the lowest current response. Cadmium showed a different behaviour from the other three metals in that the highest current response was observed with 4-methylcatechol. The four metals could be determined simultaneously in the presence of resorcinol, although considerable interference was observed between bismuth and copper.]]> Thu 16 May 2024 05:11:04 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:57077 Thu 16 May 2024 05:11:03 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:75297 Thu 05 Sep 2024 14:41:31 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:75290 Thu 05 Sep 2024 14:16:52 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:75093 Mon 19 Aug 2024 11:44:08 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:75091 Mon 19 Aug 2024 11:30:15 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:68492 Mon 02 Oct 2023 14:23:56 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:57087 Fri 30 Sep 2022 06:09:09 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:75047 Fri 16 Aug 2024 09:32:38 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:74675 Fri 02 Aug 2024 15:38:30 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:74663 Fri 02 Aug 2024 11:44:34 SAST ]]>