Abstract.
A new method of direct single-drop microextraction combined with electrothermal atomic absorption spectrometry (ETAAS) is presented for the determination of trace Cd and Pb with dithizone (H2DZ) as chelating reagent. Factors influencing the microextraction efficiency and determination, such as pH, microdrop volume, stirring rate, extraction time were evaluated. Under the optimized experimental conditions, the detection limits of the method are 2 and 90 pg mL−1 for Cd and Pb, and the relative standards deviations for 0.5 ng mL−1 Cd and 10 ng mL−1 Pb are 11 and 12.8%. After 10 min of extraction, the enrichment factors for Cd and Pb are 118 and 90, respectively. The results for the determination of Cd and Pb in tap water, spring water, river water, pond water, lake water and spiked water samples demonstrate the accuracy, recovery and applicability of the method. An environmental water certified reference material (GSBZ 50009-88) was analyzed, and the determined values are in a good agreement with the certified values.
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References
C A Lucy F F Cantwell (1989) ArticleTitleKinetics of solvent extraction-flow injection analysis Anal Chem 61 101 Occurrence Handle10.1021/ac00177a005 Occurrence Handle1:CAS:528:DyaL1MXivFKitA%3D%3D
C A Lucy K K-C Yeung (1994) ArticleTitleSolvent extraction-flow injection without phase separation through the use of the differential flow velocities within the segmented flow Anal Chem 66 2220 Occurrence Handle10.1021/ac00086a004 Occurrence Handle1:CAS:528:DyaK2cXktFyitbg%3D
H G Liu P K Dasgupta (1996) ArticleTitleAnalytical chemistry in a drop. Solvent extraction in a microdrop Anal Chem 68 1817 Occurrence Handle10.1021/ac960145h Occurrence Handle1:CAS:528:DyaK28XisF2ktbY%3D
M A Jwannot F F Cantwell (1996) ArticleTitleSolvent microextraction into a single drop Anal Chem 68 2236 Occurrence Handle10.1021/ac960042z
M A Jwannot F F Cantwell (1997) ArticleTitleMass transfer characteristics of solvent extraction into a single drop at the tip of a syringe needle Anal Chem 69 235 Occurrence Handle10.1021/ac960814r
Y He H K Lee (1997) ArticleTitleLiquid-phase microextraction in a single drop of organic solvent by using a conventional microsyringe Anal Chem 69 4634 Occurrence Handle10.1021/ac970242q Occurrence Handle1:CAS:528:DyaK2sXnt1amt74%3D
S Pedersen-Bjergard K E Rasmussen (1999) ArticleTitleLiquid–Liquid–Liquid microextraction for sample preparation of biological fluids prior to capillary electrophoresis Anal Chem 71 2650 Occurrence Handle10.1021/ac990055n
E Psillakis N Kalogerakis (2001) ArticleTitleApplication of solvent microextraction to the analysis of nitroaromatic explosives in water samples J Chromatogr A 907 211 Occurrence Handle10.1016/S0021-9673(00)01017-7 Occurrence Handle1:CAS:528:DC%2BD3MXitlKjtA%3D%3D
M C López-Blanco S Blanco-Cid B Cancho-Grande J Simal-Gándara (2003) ArticleTitleApplication of single-drop microextraction and comparison with solid-phase microextraction and solid-phase extraction for the determination of a- and b-endosulfan in water samples by gas chromatography-electron-capture detection J Chromatogr A 984 245 Occurrence Handle10.1016/S0021-9673(02)01873-3
R Batlle C Neŕýn (2004) ArticleTitleApplication of single-drop microextraction to the determination of dialkyl phthalate esters in food simulants J Chromatogr A 1045 29 Occurrence Handle10.1016/j.chroma.2004.06.001 Occurrence Handle1:CAS:528:DC%2BD2cXmtVags78%3D
E Psillakis N Kalogerakis (2002) ArticleTitleDevelopments in single-drop microextraction Trends Anal Chem 21 53 Occurrence Handle10.1016/S0165-9936(01)00126-1 Occurrence Handle1:CAS:528:DC%2BD38XptlGiuw%3D%3D
E Psillakis N Kalogerakis (2003) ArticleTitleDevelopments in liquid-phase microextraction Trends Anal Chem 22 565 Occurrence Handle10.1016/S0165-9936(03)01007-0 Occurrence Handle1:CAS:528:DC%2BD3sXotVCmt70%3D
M Chamsaz M H Arbab-Zavar S Nazari (2003) ArticleTitleDetermination of arsenic by electrothermal atomic absorption spectrometry using headspace liquid phase microextraction after in situ hydride generation J Anal At Spectrom 18 1279 Occurrence Handle10.1039/b303169a Occurrence Handle1:CAS:528:DC%2BD3sXns1CmsLY%3D
S Fragueiro I Lavilla C Bendicho (2004) ArticleTitleHeadspace sequestration of arsine onto a Pd(II)-containing aqueous drop as a preconcentration method for electrothermal atomic absorption spectrometry Spectrochim Acta 59B 851 Occurrence Handle1:CAS:528:DC%2BD2cXkvVWlt7w%3D
S Gil S Fragueiro I Lavilla C Bendicho (2005) ArticleTitleDetermination of methylmercury by electrothermal atomic absorption spectrometry using headspace single-drop microextraction with in situ hydride generation Spectrochim Acta 60B 145 Occurrence Handle1:CAS:528:DC%2BD2MXktF2jtA%3D%3D
S Fragueiro I Lavilla C Bendicho (2006) ArticleTitleHydride generation-headspace single-drop microextraction-electrothermal atomic absorption spectrometry method for determination of selenium in waters after photoassisted prereduction Talanta 68 1096 Occurrence Handle10.1016/j.talanta.2005.07.011 Occurrence Handle1:CAS:528:DC%2BD28XotFGiuw%3D%3D
L Xia B Hu Z Jiang Y Wu Y Liang (2004) ArticleTitleSingle-drop microextraction combined with low-temperature electrothermal vaporization ICPMS for the determination of trace Be, Co, Pd, and Cd in biological samples Anal Chem 76 2910 Occurrence Handle10.1021/ac035437e Occurrence Handle1:CAS:528:DC%2BD2cXivVagtL8%3D
L Xia B Hu Z Jiang Y Wu L Li R Chen (2005) ArticleTitle8-Hydroxyquinoline-chloroform single drop microextraction and electrothermal vaporization ICP-MS for the fractionation of aluminium in natural waters and drinks J Anal At Spectrom 20 1 Occurrence Handle10.1039/b416938g
Y Sung S Huang (2003) ArticleTitleOn-line preconcentration system coupled to electrothermal atomic absorption spectrometry for the simultaneous determination of bismuth, cadmium, and lead in urine Anal Chim Acta 495 165 Occurrence Handle10.1016/j.aca.2003.07.009 Occurrence Handle1:CAS:528:DC%2BD3sXnvFGhu7w%3D
J Ruiz-Jiménez J L Luque-Garćýa M D Luque de Castro (2003) ArticleTitleDynamic ultrasound-assisted extraction of cadmium and lead from plants prior to electrothermal atomic absorption spectrometry Anal Chim Acta 480 231 Occurrence Handle10.1016/S0003-2670(02)01658-6
P C Aleixo D S Júnior A C Tomazelli I Rufini A H Berndt F J Kruga (2004) ArticleTitleCadmium and lead determination in foods by beam injection flame furnace atomic absorption spectrometry after ultrasound-assisted sample preparation Anal Chim Acta 512 329 Occurrence Handle10.1016/j.aca.2004.02.049 Occurrence Handle1:CAS:528:DC%2BD2cXjvVGhtLs%3D
N Tokman S Akman (2004) ArticleTitleDetermination of bismuth and cadmium after solid-phase extraction with chromosorb-107 in a syringe Anal Chim Acta 519 87 Occurrence Handle10.1016/j.aca.2004.05.082 Occurrence Handle1:CAS:528:DC%2BD2cXmt1KgsLg%3D
J Chen S Xiao X Wu K Fang W Liu (2005) ArticleTitleDetermination of lead in water samples by graphite furnace atomic absorption spectrometry after cloud point extraction Talanta 67 992 Occurrence Handle10.1016/j.talanta.2005.04.029 Occurrence Handle1:CAS:528:DC%2BD2MXhtVClu73I
X Su M Wang Y Zhang J Zhang H Zhang Q Jin (2003) ArticleTitleSemi-online preconcentration of Cd, Mn and Pb on activated carbon for GFASS Talanta 59 989 Occurrence Handle10.1016/S0039-9140(02)00582-9 Occurrence Handle1:CAS:528:DC%2BD3sXis1ejur0%3D
Dai S G (1999) Environmental chemistry. High Education Press, p 114
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Correspondence: Bin Hu, Department of Chemistry, Wuhan University, Wuhan 430072, P.R. China
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Jiang, H., Hu, B. Determination of trace Cd and Pb in natural waters by direct single drop microextraction combined with electrothermal atomic absorption spectrometry. Microchim Acta 161, 101–107 (2008). https://doi.org/10.1007/s00604-007-0785-0
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DOI: https://doi.org/10.1007/s00604-007-0785-0