Fiber Optic-linear Array Detection Spectrophotometry in Combination with Dispersive Liquid-Liquid Microextraction for Preconcentration and Determination of Copper

被引：25
作者：
Ezoddin, Maryam [1 ]
Shemirani, Farzaneh [1 ]
Jamali, Mohammad Reza [2 ]
机构：
[1] Univ Tehran, Univ Coll Sci, Sch Chem, Tehran, Iran
[2] Payame Noor Univ, Dept Chem, Behshahr, Iran
来源：
JOURNAL OF ANALYTICAL CHEMISTRY | 2010年 / 65卷 / 02期
关键词：
SOLID-PHASE EXTRACTION; ATOMIC-ABSORPTION-SPECTROMETRY; NATURAL-WATER SAMPLES; ACTIVATED CARBON; CADMIUM; METALS; SYSTEM; CU(II); FAAS;
D O I：
10.1134/S1061934810020097
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
In this research, simple, rapid and efficient method, dispersive liquid-liquid microextraction (DLLME) combined fiber optic-linear array detection spectrophotometry (FO-LADS) was developed using a cylindrical micro-cell for preconcentration and determination of Cu(II) in samples. DLLME and FO-LADS methods have good matching conditions for being combined since FO-LADS is a suitable method for the determination of analytes in low volume of the remained phase obtained after DLLME. Molar absorptivity of complex Cu with (4-benzylpiperidineditiocarbamate potassium salt) (BPDC) was determined as 2.75 x 10(4) L mol(-1) cm(-1) at lambda(max) = 436 nm. Under the optimum conditions the calibration graph was linear in the rage of 2-70 mu g L-1 with detection limit of 0.34 mu g L-1. The proposed procedure was successfully applied to the determination of Cu(II) in real water samples and human urine sample.
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页码：153 / 158
页数：6
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