Stability of pyro - and tripolyphosphate complexes with micronutrients and liquid fertilizers

• Autorzy: Grzmil B. , Kic B.

Warianty tytułu

PL

Trwałość piro- i trójpolifosforanowych kompleksów z mikroelementami a nawozy ciekłe

• Języki publikacji: EN

Abstrakty

EN

The conditional stability constants of tripolyphosphate, pyrophosphate and the citrate complexes with respectively Zn2+, Mn2+, Co2+, Cu2+, Fe2+ as a function of pH range (4.5 - 7.5) and the ionic strength of solution (0.1 - 3.0 mol/dm3) have been determined. It was found that the studied complexes at pH values of 6 and 7.5 have higher conditional stability constants than those complexes at pH value of 4.5. Higher conditional stability constants possessed complexes in a solution containing two different ligands - tripolyphosphate and citrate in comparison with pure tripolyphosphates and citrates. The possibilities of production of liquid fertilizers NPKMg with micronutrients (Zn, Cu, Co, Mo, B, Mn, Fe) stable during storage period have been determined. The solutions of tripolyphosphates with pH value of 4.5 - 7.5 and solution of citrates with pH values of 4.5 and 6.0 were stable over an extended time period. Whereas the precipitate was formed from solutions in which complexing ligand was pyrophosphate for the studied range of pH, and at pH 7.5 in the case of citrate.

Słowa kluczowe

EN

liquid fertilizers; polyphosphates; micronutrients

PL

nawozy sztuczne ciekłe; polifosforany; mikroelementy

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2000
• Tom: Vol. 2, nr 1
• Strony: 5--9
• Opis fizyczny: Bibliogr. 14 poz., tab., rys.

Twórcy

autor

Grzmil B.

• Institute of Chemical and Environmental Engineering, Technical University of Szczecin, ul. Pułaskiego 10, 70-322 Szczecin, Poland

autor

Kic B.

• Institute of Chemical and Environmental Engineering, Technical University of Szczecin, ul. Pułaskiego 10, 70-322 Szczecin, Poland

Bibliografia

• (1) Kabata - Pendias A., Pendias H., The Biochemistry of Trace Elements, PWN, Warszawa, 1993.
• (2) Czuba R., Mineral Fertilization of Cultivated Plants. Chemical Plant "Police", Police, 1996.
• (3) Górecki H., Novel Technologies and New Techniques of Fertilizers Application in the World, Chemik, 1994, 47, 48 - 58.
• (4) Kotula F., Faber A., Winiarski A., Liquid Multicomponent Fertilizers with Microelements in Foliar Fertilization, Przem. Chem., 1988, 67, 157 - 161.
• (5) Inczedy J., Complexation Equilibriums in Analytical Chemistry, PWN, Warszawa, 1979.
• (6) Ringbom A., Complexation in Analytical Chemistry, Interscience Publisher, New York, London, 1963.
• (7) Prodan F. A., Prodan L. J., Tripolyphosphates and their Application, Science and Technique, Mińsk, 1969.
• (8) Marczenko Z., Spectrophotometric Determination of Elements, Scientific Publishers NPS, Warszawa, 1979.
• (9) Orion Research, Instruction Manual Ammonia Electrode, Orion Research, Cambridge, U.K., 1979.
• (10) Orion Research, Instruction Manual Nitrate Flectrode, Orion Research, Cambridge, U.K., 1991.
• (11) Połuektov N. S., Analysis by Flame Photometry, Scientific - Technique Publisher, Warszawa, 1969.
• (12) Szczepaniak W., Instrumental Methods in Chemical Analysis, Scientific Publishers NPS, Warszawa, 1997.
• (13) Grzmil B., Kic B., Kałucki K., Liquid Fertilizer Concentrate for Onto - Leaf and Onto - Soil Fertilization, Patent Pending (6 - 9 - 00, 2000).
• (14) Czuba R., Spiak K., Sztuder H., Świerczewska M., Evaluation of Usefulness of Three Multicomponent Fertilizer Formulations in the Vase Experiments, Scientific - Research Center of Chemistry, Agricultural Chemistry and Environmental Protection, Wrocław, 1999 (unpublished report).