Selective and sensitive spectrophotometric method for determination of sub-micro-molar amounts of aluminium ion.
A simple and accurate spectrophotometric method for determination of trace and ultra-trace amounts of Al3+ ion in tap and wastewater sample has been described. Using the eriochrome cyanine R (ECR) in the presence of N,N-dodecyltrimethylammonium bromide (DTAB) as cationic surfactant spectrophotometric determination of Al3+ ion has been carried out. The Beer's law is obeyed over the concentration range of 4-400 ng mL(-1) of Al3+ ion with the detection limits of 0.14 ng mL(-1), while the molar absorptivity of complexes is 1.19x10(5) L mol(-1) cm(-1). The influence of type and amount of surfactant, pH, and amount of ligand on sensitivity of spectrophotometric method were optimized. The method has been successfully applied for Al3+ ion determination in real sample.
Shokrollahi
A
A
Chemistry Department, Yasouj University, Yasouj 75914-353, Iran.
Ghaedi
M
M
Niband
M S
MS
Rajabi
H R
HR
D000535:Aluminum / Q000032:analysis* / Q000737:chemistry; D001557:Benzenesulfonates / Q000737:chemistry; D002138:Calibration; D002623:Chemistry Techniques, Analytical / Q000379:methods*; D004305:Dose-Response Relationship, Drug; D004563:Electrochemistry / Q000379:methods; D006863:Hydrogen-Ion Concentration; D007477:Ions; D008024:Ligands; D011199:Potentiometry / Q000379:methods; D000644:Quaternary Ammonium Compounds / Q000737:chemistry; D012680:Sensitivity and Specificity; D013053:Spectrophotometry / Q000379:methods*; D013056:Spectrophotometry, Ultraviolet
D001557:Benzenesulfonates; D007477:Ions; D008024:Ligands; D000644:Quaternary Ammonium Compounds; C013912:decyltrimethylammonium; C010332:solochrome cyanine R; D000535:Aluminum