TY  - JOUR
T1  - Extraction and Determination of Ni (II) Using Cryptand C222 and 8-Hydroxy
Quinoline from Basic Solutions via the Liquid Ion Exchange Method
AU - Jawad, Shawket Kadhim AU - Hussain, Maha Abbas 
JO  - Journal of Engineering and Applied Sciences
VL  - 13
IS  - 17
SP  - 7215
EP  - 7222
PY  - 2018
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2018.7215.7222
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2018.7215.7222
KW  - Liquid ion exchange
KW  -cryptand
KW  -8-hydroxy quinoline
KW  -nickel (II)
KW  -solvent extraction
KW  -determination
AB  - Liquid ion exchange was used as a sensitive method for extraction of Ni (II) as an ion pair association
complex using cryptand C222 and 8-hydroxy quinoline from aqueous basic solutions, the study looked at wave
length for maximum absorbance of extracted complexes which was 400 nm. The extraction experiments showed
optimum condition for extraction at higher efficiency 0.7 M KOH in presence of 100 &#956;g Ni<sup>+2</sup> after shaking the
two layers for 15 min, therefore, 0.25 M of 8-hydroxy quinoline is necessary to produce an ion pair association
complex, it is important to note that increasing the concentration of cryptand C222 creates a relatively straight
line which matches previous research studies about effective parameters for extraction efficiency. Undoubtedly,
this method can be used for determination of Ni (II) in different samples spectrophotometrically.
ER  -