TY  - JOUR
AU  - Faiku, Fatmir 
AU  - Faiku, Haxhere 
AU  - Haziri, Arben 
AU  - Gashi, Fatbardh 
AU  - Troni, Naser 
AU  - Govori, Sevdije 
AU  - Maxhuni, Albert 
PY  - 2009
TI  - Determination of Precipitation Limit of Zn(II) Ion with (2S)-2-Aminobutanedioic Acid
JF  - American Journal of Biochemistry and Biotechnology
VL  - 5
IS  - 4
DO  - 10.3844/ajbbsp.2009.184.188
UR  - https://thescipub.com/abstract/ajbbsp.2009.184.188
AB  - Problem statement: In this study we examined the precipitation of Zn(II) ion in water solutions of ZnSO4.7H2O  (1.10-2 and 5.10-3 mol L-1) with (2S)-2-aminobutanedioic acid (1.10--1.10-3 mol L-1) in constant ionic strength of 0.6 mol L-1 NaCl. We have determined the concentration region where we have found the clear solution and solid phase. The solid phase is analyzed by IR spectroscopy. Approach: From precipitation diagrams of zinc with (2S)-2-aminobutanedioic acid in ionic force 0.6 mol L-1 NaCl, we have found that during decreasing the concentration (2S)-2-aminobutanedioic acid in case of constant concentration of Zn(II) the limit of precipitation is shifted to lower values of pH. Results: Also from precipitation diagrams we can see that when the concentration of zinc increases, in case of constant concentration of (2S)-2-aminobutanedioic acid the limit of precipitation will shift at lower values of pH. Conclusion: From the IR spectroscopic analysis we can conclude that Zn (II) ion has reacted with (2S)-2-aminobutanedioic acid.