References
- Al-Alawi , MM and Mandiwana , KL . 2007 . The use of Aleppo pine needles as a bio-monitor of heavy metals in the atmosphere . J Hazard Mater , 148 : 43 – 46 .
- Cesur , H and Aksu , C . 2006 . Determination of cadmium and zinc in fertilizer samples by FAAS after solid-phase extraction with freshly precipitated manganese diethyldithiocarbamate . Jpn Soc Anal Chem , 22 : 727 – 730 .
- Codex Alimentarius Commission. 1984. Contaminants. Vol. XVII. 1st ed. Joint FAO/WHO Food Standards Program. Rome (Italy): Codex Alimentarius Commission
- Compano , R , Ferrer , R , Guiteras , J and Dolors , M . 1994 . Spectrofluorimetric detection of zinc and cadmium with 8-(benzenesulfonamido)-quinoline immobilized on a polymeric matrix . Analyst , 119 : 1225 – 1228 .
- Daorattanachai , P , Unob , F and Imyim , A . 2005 . Multi-element preconcentration of heavy metal ions from aqueous solution by APDC impregnated activated carbon . Talanta , 67 : 59 – 64 .
- Fernandes , AP , Moraes , M and Neto , JAG . 2003 . Flow injection AAS determination of Cd, Cu, and Pb at trace levels in wine using solid phase extraction . Atom Spectrosc , 24 : 179 – 184 .
- Garg , BS , Bid , JS , Shama , RK and Bhojak , N . 1996 . Solid-phase extraction of metal ions and their estimation in vitamins, steel and milk using 3-hydroxy-2-methyl-1,4-naphthoquinone-immobilized silica gel . Talanta , 43 : 2093 – 2099 .
- Hong , MY , Hua , S and Ming , LC . 2011 . Dithizone immobilized silica gel on-line preconcentration of trace copper with detection by flame atomic absorption spectrometry . Talanta , 85 : 625 – 630 .
- Horwitz , W . 2000 . Official method of analysis , 17th , Gaithersburg (MD, USA) : Association of Analytical Chemists .
- Humaira , K , Mohammad , JA and Mohammad , IB . 2005 . A simple spectrophotometric determination of trace level mercury using 1,5-diphenylthiocarbazone solubilized in micelle . Anal Sci , 21 ( 5 ) : 507 – 512 .
- Latif , E , Aslihan , AK and Mustafa , S . 2008 . Solid phase extraction method for the determination of iron, lead and chromium by atomic absorption spectrometry using Amberlite XAD-2000 column in various water samples . J Hazard Mater , 153 : 454 – 461 .
- Liang , W , Xinshen , Z , Yichun , D , Jin , H , Yong-Hong , X and Kai , X . 2008 . Online preconcentration and determination of trace amounts of zinc in nature water . J Autom Method Manag , 2008 : 1 – 5 .
- Moawed , EA and El-Shahat , MF . 2006 . Preparation, characterization and application of polyurethane foam functionalized with α-naphthol for preconcentration and determination of trace amounts of nickel and copper in cast iron and granite . React Funct Polym , 66 : 720 – 727 .
- Mohsen , B , Nasrin , S and Sayed , MG . 2010 . Simultaneous preconcentration of lead and cadmium ions with methylioctylammonium chloride supported on microcrystalline naphthalene and determination by flame atomic absorption spectrometry . Eur J Chem , 1 ( 3 ) : 216 – 220 .
- Mustafa , S and Cay , RS . 2007 . Separation/preconcentration of silver(I) and lead(II) in environmental samples on cellulose nitrate membrane filter prior to their flame atomic absorption spectrometric determinations . J Hazard Mater , 146 : 142 – 147 .
- Mustafa , T , Mustafa , S and Latif , E . 2005 . Multi-element pre-concentration of heavy metal ions by solid phase extraction on Chromosorb 108 . Anal Chim Acta , 548 : 101 – 108 .
- Nezio , MSD , Palomeque , ME and Band , BSF . 2005 . Automated flow-injection method for cadmium determination with preconcentration and reagent preparation on-line . Quim Nova , 28 ( 1 ) : 145 – 148 .
- Oliva , A , Molinari , A , Zuniga , F and Ponce , P . 2002 . Studies on the liquid-liquid extraction of nickel(II), zinc(II), cadmium(II), mercury(II) and lead(II) with 1-phenyl-3-hydroxy-4-dodecyldithiocarboxylate-5-pyrazolone . Mikrochim Acta , 140 : 201 – 203 .
- Pourya , B and Mohammad , RH . 2007 . Cloud point extraction using NDTT reagent for preconcentration and determination of copper in some environmental water samples by flame atomic absorption spectroscopy . Acta Chim Slov , 54 : 805 – 810 .
- Rezaei , B , Sadeghi , E and Meghdadi , S . 2009 . Nano-level determination of copper with atomic absorption spectrometry after pre-concentration on N,N(4-methyl-1,2-phenylene)diquinoline-2-carboxamide-naphthalene . J Hazard Mater , 168 : 787 – 792 .
- Sastre , J , Sahuquillo , A , Vidal , M and Rauret , G . 2002 . Determination of Cd, Cu, Pb and Zn in environmental samples: microwave-assisted total digestion versus aqua regia and nitric acid extraction . Anal Chim Acta , 462 ( 1 ) : 59 – 72 .
- Shayessteh , D , Ali , MHS and Zahra , D . 2006 . Immobilized stearic acid as a new sorbent for online preconcentration and determination of lead by flow injection flame atomic absorption spectrometry . J Braz Chem Soc , 17 ( 3 ) : 548 – 554 .
- Tayyebeh , M , Abbas , A , Mohammad , AZ and Mohammad , S . 2006 . Separation, preconcentration and determination of silver ion from water samples using silica gel modified with 2,4,6-trimorpholino-1,3,5-triazin . J Hazard Mater , B128 : 67 – 72 .
- Vibha , G , Ajai , KS and Venkataramani , B . 2003 . Cellulose functionalized with 8-hydroxyquinoline: new method of synthesis and applications as a solid phase extractant in the determination of metal ions by flame atomic absorption spectrometry . Anal Chim Acta , 485 : 221 – 232 .
- Yang , G , Hu , Q , Yang , J , Huang , Z and Yin , J . 2003 . Solid phase extraction and spectrophotometric determination of silver with 2-(2-quinolylazo)-5-diethylaminophenol as chromogenic reagent . Anal Sci , 19 ( 2 ) : 299 – 302 .