caa a22 4500 463218728 CHVBK 20180405153205.0 cr unu---uuuuu 170326e20070601xx s 000 0 eng 10.1134/S1061934807060056 doi (NATIONALLICENCE)springer-10.1134/S1061934807060056 Pyrogallol azo derivatives as analytical reagents for determining nickel(II) [Elektronische Daten] [R. Alieva, V. Melikova, F. Chyragov] Reagents based on bis-(2,3,4-trihydroxyphenylazo)benzidine and 2,2′,3,4-tetrahydroxy-3′-sulfo-5′-nitroazobenzene were used for the spectrophotometric determination of nickel. The optimum complexation conditions were found and the stability constants of the nickel complexes were determined. The effect of foreign ions and masking substances on the complexation was studied. The procedure was used for the photometric determination of nickel in volcanogenic rocks. Pleiades Publishing, Ltd., 2007 Alieva R. Department of Chemistry, Baku State University, ul. Z. Khalilova 23, 1148, Baku, Azerbaijan aut Melikova V. Department of Chemistry, Baku State University, ul. Z. Khalilova 23, 1148, Baku, Azerbaijan aut Chyragov F. Department of Chemistry, Baku State University, ul. Z. Khalilova 23, 1148, Baku, Azerbaijan aut Journal of Analytical Chemistry Nauka/Interperiodica 62/6(2007-06-01), 526-529 1061-9348 62:6<526 2007 62 10809 https://doi.org/10.1134/S1061934807060056 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S1061934807060056 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Alieva R. Department of Chemistry, Baku State University, ul. Z. Khalilova 23, 1148, Baku, Azerbaijan aut NATIONALLICENCE 700 1- Melikova V. Department of Chemistry, Baku State University, ul. Z. Khalilova 23, 1148, Baku, Azerbaijan aut NATIONALLICENCE 700 1- Chyragov F. Department of Chemistry, Baku State University, ul. Z. Khalilova 23, 1148, Baku, Azerbaijan aut NATIONALLICENCE 773 0- Journal of Analytical Chemistry Nauka/Interperiodica 62/6(2007-06-01), 526-529 1061-9348 62:6<526 2007 62 10809 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer