Evaluation of Graphene as a Solid-Phase Extraction Sorbent for the Preconcentration and Determination of Trace Amounts of Nickel in Food Samples Prior to Flame Atomic Absorption Spectrometry

被引：9
|
作者：
Ebrahimi, Bahram [1 ]
Bahar, Soleiman [2 ]
Moedi, Seyde Elham [2 ]
机构：
[1] Islamic Azad Univ, Fac Sci, Dept Chem, Sanandaj Branch, Sanandaj, Iran
[2] Univ Kurdistan, Fac Sci, Dept Chem, Sanandaj, Iran
来源：
JOURNAL OF AOAC INTERNATIONAL | 2015年 / 98卷 / 03期
关键词：
CLOUD POINT EXTRACTION; SPECTROPHOTOMETRIC DETERMINATION; NATURAL-WATERS; METAL-IONS; ADSORPTION; SEPARATION; CADMIUM(II); ENRICHMENT; SILICA; COBALT;
D O I：
10.5740/jaoacint.14-190
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A sensitive and low cost SPE method for the extraction, preconcentration, and flame atomic absorption spectrometric determination of nickel at ng/mL levels is described. Parameters governing the extraction efficiency including pH of the solution, eluent type, sample volume, and matrix ions were investigated for optimization of the presented procedure. The enhancement factor was calculated as 96.5. The calibration curve was linear with R-2 of 0.999 in the concentration range from 2 to 200 ng/mL. The RSD was 5.35% (n = 7), the LOD was 0.588 ng/mL, and relative recoveries from vegetable samples ranged between 99 and 109.5%.
引用
收藏
页码：822 / 827
页数：6
相关论文
共 50 条
12345