caa a22 4500 463220560 CHVBK 20180405153210.0 cr unu---uuuuu 170326e20070201xx s 000 0 eng 10.1134/S1061934807020049 doi (NATIONALLICENCE)springer-10.1134/S1061934807020049 Ternary complex of molybdenum(VI) with 4-nitrocatechol and tetrazolium blue chloride and its application to extraction-spectrophotometric analysis of ferrous metallurgy products [Elektronische Daten] [A. Dimitrov, V. Lekova, K. Gavazov, B. Boyanov] The formation of a new tenary complex of molybdenum(VI) with 4-nitrocatechol (NC) and tetrazolium blue chloride (BTC), which is easily extractable from water into dichloroethane, is reported. The optimum extraction conditions (pH, concentration of the reagents, extraction time) and composition of the complex (Mo: NC: BTC = 1: 2: 1) were found. The spectrophotometric parameters of the extract were determined as well. Beer's law is obeyed for concentrations of Mo ranging from 0.2 to 6.7 μg/mL with the molar absorptivity λ445 = 2.38 × 104 L mol−1 cm. A precise, sensitive, and simple method for determination of Mo in steels and ferromolybdenum was developed. Pleiades Publishing, Ltd., 2007 Dimitrov A. Department of General and Inorganic Chemistry, Plovdiv University, Bulgaria aut Lekova V. Department of General and Inorganic Chemistry, Plovdiv University, Bulgaria aut Gavazov K. Department of General and Inorganic Chemistry, Plovdiv University, Bulgaria aut Boyanov B. Department of Chemical Technology Plovdiv University, 24 Tsar Assen St., 4000, Plovdiv, Bulgaria aut Journal of Analytical Chemistry Nauka/Interperiodica 62/2(2007-02-01), 122-125 1061-9348 62:2<122 2007 62 10809 https://doi.org/10.1134/S1061934807020049 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S1061934807020049 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dimitrov A. Department of General and Inorganic Chemistry, Plovdiv University, Bulgaria aut NATIONALLICENCE 700 1- Lekova V. Department of General and Inorganic Chemistry, Plovdiv University, Bulgaria aut NATIONALLICENCE 700 1- Gavazov K. Department of General and Inorganic Chemistry, Plovdiv University, Bulgaria aut NATIONALLICENCE 700 1- Boyanov B. Department of Chemical Technology Plovdiv University, 24 Tsar Assen St., 4000, Plovdiv, Bulgaria aut NATIONALLICENCE 773 0- Journal of Analytical Chemistry Nauka/Interperiodica 62/2(2007-02-01), 122-125 1061-9348 62:2<122 2007 62 10809 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer