Determination of cadmium and lead at sub-ppt level in soft drinks: An efficient combination between dispersive liquid-liquid microextraction and graphite furnace atomic absorption spectrometry

被引：58
作者：
Mandlate, Jaime S. [1 ,2 ,3 ]
Soares, Bruno M. [2 ]
Seeger, Tassia S. [1 ]
Vecchia, Paula Dalla [1 ]
Mello, Paola A. [1 ]
Flores, Erico M. M. [1 ]
Duarte, Fabio A. [1 ]
机构：
[1] Univ Fed Santa Maria, Dept Quim, BR-97105900 Santa Maria, RS, Brazil
[2] Univ Fed Rio Grande, Escola Quim & Alimentos, BR-96203900 Rio Grande, RS, Brazil
[3] Univ Eduardo Mondlane, Dept Quim, Maputo 257, Mozambique
来源：
FOOD CHEMISTRY | 2017年 / 221卷
关键词：
Cadmium determination; Dispersive liquid-liquid microextraction; Graphite furnace atomic absorption spectrometry; Lead determination; Soft drinks; SOLID-PHASE EXTRACTION; WATER SAMPLES; ULTRA-TRACE; PRECONCENTRATION; IRON; SPECIATION; PB; FEASIBILITY; COPPER; MS;
D O I：
10.1016/j.foodchem.2016.11.075
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
A DLLME method for extraction and preconcentration of Cd and Pb from soft drinks and further determination by GF AAS was developed. Important parameters of DLLME such as the type and volume of dispersive and extraction solvents, concentration of DDTC (complexing agent) and pH were evaluated. Better results were obtained using 500 mu L of acetone for Cd and 700 mu L of acetonitrile for Pb as dispersive solvents, 60 mu L of CCl4 as extraction solvent for both analytes and 500 mu L of 1.5% DDTC solution. Accuracy was evaluated by recovery assays and ranged from 91 to 113% for Cd and from 95 to 108% for Pb, with RSD below 10 and 7%, respectively. The LODs were 0.006 and 0.072 ng L (1) for Cd and Pb, respectively. The optimized method was applied for the determination of Cd and Pb in soft drinks with different brands and flavours. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：907 / 912
页数：6
相关论文
共 31 条
  • [1] Determination of iron in tap and waste water using liquid-liquid extraction in a flow-injection system
    Almendral, MJ
    Alonso, A
    Porras, MJ
    García, MA
    Curto, Y
    [J]. MICROCHIMICA ACTA, 2004, 147 (1-2) : 117 - 123
  • [2] Evaluation of liquid chromatography inductively coupled plasma mass spectrometry for arsenic speciation in water from industrial treatment of shale
    Duarte, Fabio Andrei
    Fagundes Pereira, Juliana Severo
    Mesko, Marcia Foster
    Goldschmidt, Fabiane
    de Moraes Flores, Erico Marlon
    Dressier, Valderi Luiz
    [J]. SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, 2007, 62 (09) : 978 - 984
  • [3] Dispersive liquid-liquid microextraction for chemical speciation and determination of ultra-trace concentrations of metal ions
    El-Shahawi, M. S.
    Al-Saidi, H. M.
    [J]. TRAC-TRENDS IN ANALYTICAL CHEMISTRY, 2013, 44 : 12 - 24
  • [4] Determination of pyrethroid pesticides residues in vegetable oils using liquid-liquid extraction and dispersive liquid-liquid microextraction followed by gas chromatography-flame ionization detection
    Farajzadeh, Mir Ali
    Khoshmaram, Leila
    Nabil, Ali Akbar Alizadeh
    [J]. JOURNAL OF FOOD COMPOSITION AND ANALYSIS, 2014, 34 (02) : 128 - 135
  • [5] Exploratory analysis and inductively coupled plasma optical emission spectrometry (ICP OES) applied in the determination of metals in soft drinks
    Froes, Roberta E. S.
    Neto, Waldomiro Borges
    Naveira, Rita L. P.
    Silva, Nilton C.
    Nascentes, Clesia C.
    da Silva, Jose B. B.
    [J]. MICROCHEMICAL JOURNAL, 2009, 92 (01) : 68 - 72
  • [6] Dispersive liquid-liquid microextraction combined with graphite furnace atomic absorption spectrometry - Ultra trace determination of cadmium in water samples
    Jahromi, Elham Zeini
    Bidari, Araz
    Assadi, Yaghoub
    Hosseini, Mohammad Reza Milani
    Jamali, Mohammad Reza
    [J]. ANALYTICA CHIMICA ACTA, 2007, 585 (02) : 305 - 311
  • [7] Dispersive liquid-liquid microextraction combined with flow injection inductively coupled plasma mass spectrometry for simultaneous determination of cadmium, lead and bismuth in water samples
    Jia, Xiaoyu
    Han, Yi
    Liu, Xinli
    Duan, Taicheng
    Chen, Hangting
    [J]. MICROCHIMICA ACTA, 2010, 171 (1-2) : 49 - 56
  • [8] Background Corrected Dispersive Liquid-Liquid Microextraction of Cadmium Combined with Flame Atomic Absorption Spectrometry
    Karim-Nezhad, Ghasem
    Ahmadi, Mohammad
    Zare-Dizajdizi, Behruz
    [J]. JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY, 2011, 22 (09) : 1816 - 1822
  • [9] PRECONCENTRATION, DETERMINATION AND SPECIATION OF IRON BY SOLID-PHASE EXTRACTION USING DIMETHYL (E)-2-[(Z)-1-ACETYL)-2-HYDROXY-1-PROPENYL]-2-BUTENEDIOATE
    Khayatian, Gholamreza
    Hassanpoor, Shahed
    Nasiri, Farough
    Zolali, Amin
    [J]. QUIMICA NOVA, 2012, 35 (03): : 535 - 540
  • [10] Dispersive liquid-liquid microextraction using diethyldithiocarbamate as a chelating agent and the dried-spot technique for the determination of Fe, Co, Ni, Cu, Zn, Se and Pb by energy-dispersive X-ray fluorescence spectrometry
    Kocot, Karina
    Zawisza, Beata
    Sitko, Rafal
    [J]. SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, 2012, 73 : 79 - 83
1234