TY  - JOUR
T1  - Potentiometric Studies of Nickel (II), Copper (II) and Cobalt (II) Binary Complexes with Glycine Amino Acid in Aqueous Solution
AU - Sadat Neiband, Marzieh 
JO  - Journal of Engineering and Applied Sciences
VL  - 11
IS  - 6
SP  - 1306
EP  - 1310
PY  - 2016
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2016.1306.1310
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2016.1306.1310
KW  - Potentiometric study
KW  -nickel (II)
KW  -copper (II)
KW  -cobalt (II)
KW  -glycine
KW  -complexe formation
AB  - The complexation equilibria of glycine with some transition metal ions such as Cu<SUP>2+</SUP>, Co<SUP>2+</SUP> and Ni<SUP>2+</SUP> were studied by potentiometric method in aqueous solution. All of the titration steps were carried out at 25.0&plusmn;0.1&deg;C and ionic strength (&mu;) of 0.1 M supported by NaNO<SUB>3</SUB>. The overall stability constants log&#946;&#146;s of respective species were evaluated by computer refinement of the corresponding potentiometric pH titration data using BEST computer program. The corresponding distribution diagrams were depicted as a function of pH by using SP and SPE programs. The most likely species were obtained from distribution diagrams. Complex stabilities follow the trend copper(II)&gt;nickel(II)&gt;cobalt(II) which is in agreement with the Irving-Williams series.
ER  -