Karakalpak Scientific Journal


The authors of the article suggest simple and express method of spectrophotometric determination of cobalt with the help of derivatives of gossypol. Optimal conditions of determining cobalt are found. Under optimal conditions there was created a graded graph, which is more linear in the range for cobalt concentration of 10.0 – 50.0 microgram/25 ml, contents and constants of cobalt complex with gossypol vinegar acid.

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1. Ziyaev Kh.L., Baram N.I., Khodzhaniyazov B., Kamaev F.G., Bektemirov L, Dzhurabekova A.I., Ismailov A.I., Gossipol, its derivatives and their complexes in solutions.// Chem. Nat. Compd. -1998. V. 1. –P.52.

2. Bingol Haluk, Atalay Tevfik. Issledovanie kinetiki reakcii kompleksoobrazovaniya dvuxvalentnogo kobal`ta s 2-benzoilpiridin-4-fenil-3-tiosemikarbazonom i kinetiko-spektrofotometricheskoe opredeleniya kobal`ta. Acta Ciem.Yndica Chem. 1988, V.42, № 4, p. 241-252. Cit. po RZhXim. 24G10, 2007.

3. U.K.Abdurahmanova, A.N.Abduganiev Determination of cobalt in natural objects Znanstvena misel 2018, №21, 53-56r.

4. Markman A.L., Rzhexin V.P. Gossipol i ego proizvodny`e. -M.: Pishh. prom-t`., -1965. – 250s.

5. Dechary J.M., Brown L.E. Subetituted arylimune derivaties of gossypol // J.Amer. Oil Chem. Soc. -1956. –Vol. 33. –P.76-78.

6. Alley P.W, Shirley D.A. Some new anil derivateis of gossypol // J.Org. chem, 1959 Vol 24 (10). –P.1534-1536.

7. Przybylski P., Brzezinski B. The Complexes Between Schiff Base of Gossypol with L-Phenylalanine Methyl Ester and Some Monovalent Cations Studied by 1H NMR, ESI MS, FT-IR as Well as PM5 Semi-empirical Methods // J. Mol. Struct. – 2003. -Vol.654.-P.167–176.

8. Przybylski, P., Schroeder G., Brzezinski B. // Complexes of Schiff Base of Gossypol with 5-Hydroxy-3-oxapentylamine and Ca2+, Ba2+ or Pb2+ Cations Studied by NMR, FT-IR, ESI MS as Well as PM5 Semiempirical Methods, Ibid. -2003. -Vol.658. -P.115–124.

9. Przybylski P., Schroeder G., Brzezinski B. // The Schiff Base of Gossypol with 2-(Aminomethyl)-18-crown-6 Complexes and H+, Li+, Na+, K+, Rb+, Cs+ Cations Studied by ESI MS, 1 H NMR, FT-IR and PM5 Semiempirical Methods, Ibid. -2004. Vol.699. –P.65–77.

10. Przybylski P., Schroeder G., Pankiewicz R., Brzezinski B., Bartl F. // Complexes of Schiff Base of Gossypol with nButylamine and Some Monovalent or Bivalent Cations Studied by ESI MS, NMR, FT-IR as Well as PM5 Semi empirical Methods, Ibid.. – 2003. Vol.658. –P.193–205.



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