Tishreen University Journal for Research and Scientific Studies - Basic Sciences Series Vol. ( ) No. ( ) *** pg/ abs M H SO ***
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1 Tishreen University Journal for Research and Scientific Studies - Basic Sciences Series Vol. ( ) No. ( ) ** * *** pg/ pg/ pg/ HNO H SO H SO * ** *** ٢١٩
2 Tishreen University Journal for Research and Scientific Studies - Basic Sciences Series Vol. ( ) No. ( ) Usage of two matrix modifiers (HNO, H SO ) in direct determination of trace cadmium element in seawater by atomic orption spectrometry with electrothermal atomization. Dr. Issam ohamad * Dr. ohammad Al Shahneh ** Nour Al deen Youssef *** (Received ١٨ / ٣ / ٢٠٠٨. Accepted ٢٥/٥/٢٠٠٨) ABSTRACT This study deals with the effect of a series concentrations of nitric acid and sulfuric acid on atomic orption signal of trace Cd-element in seawater medium in order to determine the optimal concentration of the two studied acids used as matrix modifiers. The thermal study is done in order to determine the optimal temperature of ashing and atomizing stages used in direct determination of trace Cd-element in sweater using standard additions method for GF and GF-PFT technique with deuterium corrector. The results shows a sensitivity of pg/.and pg/.in the presence of HNO and H SO respectively as matrix modifiers for GFtechnique, and pg/. in the presence of H SO as matrix modifier for GF-PFT technique. This method allows to determine trace Cd-element directly in natural seawater. Keywords: ETA-AAS - Seawater - Cadmium element - atrix modifiers (HNO, H SO ) -Deuterium Corrector * Professor, Department of chemistry, Faculty of science, Tishreen University, Lattakia, Syria. ** Professor, Department of chemistry, Faculty of science, Tishreen University, Lattakia, Syria. *** Postgraduate student, Department of chemistry, Faculty of science, Tishreen University, Lattakia, Syria. ٢٢٠
3 Tishreen University Journal. Bas. Sciences Series مجلة جامعة تشرین العلوم الا ساسیة المجلد (٣٠) العدد (٢) ٢٠٠٨ µg/l x µg/l x g/l [ - ] Solvent extraction Ion exchange Coprecipitation [ - ] [ ] ٢٢١
4 AA SHIADZU EYELA CA GFA-EX ASC SR( Self-Reversal ) (Hallow Cathode Lamp). nm nm HNO Cd NaCl,,,,,, NaCl Flow Rate of argon (l/min) Heat ode RAP Time(sec) PFT Coated Temp() PFT Coated RAP RAP STEP ٢٢٢
5 Tishreen University Journal. Bas. Sciences Series مجلة جامعة تشرین العلوم الا ساسیة المجلد (٣٠) العدد (٢) ٢٠٠٨ STEP STEP مولاریة حمض الازوت Cd Cd ٢٢٣
6 تغیرات درجة حرارة الترمید ) ( Cd HNO تغیرات درجة حرارة التذریر ) ( 1 Cd HNO ٢٢٤
7 Tishreen University Journal. Bas. Sciences Series مجلة جامعة تشرین العلوم الا ساسیة المجلد (٣٠) العدد (٢) ٢٠٠٨ NaCl ٢٢٥
8 Ammonium Pyrrolidine Dithio Carbamate APDC CHCl ETA-AAS APDC CHCl ml Cd ml HNO (,,,, ) μl ml Flow Rate of argon (l/min) Heat ode Time(sec) PFT Coated Temp() PFT Coated ٢٢٦
9 Tishreen University Journal. Bas. Sciences Series مجلة جامعة تشرین العلوم الا ساسیة المجلد (٣٠) العدد (٢) ٢٠٠٨ RAP RAP RAP STEP STEP STEP RSD% SD SD RSD% () ٢٢٧
10 ٢٢٨ R 2 = () () A ٠ ٠٣٨
11 Tishreen University Journal. Bas. Sciences Series مجلة جامعة تشرین العلوم الا ساسیة المجلد (٣٠) العدد (٢) ٢٠٠٨ SW SW SW SW SW NaCl,,, NaCl Flow Rate of argon (l/min) Heat ode Time(sec) PFT Coated Temp() PFT Coated ٢٢٩
12 RAP RAP RAP STEP STEP STEP مولاریة حمض الكبریت Cd. Cd ٢٣٠
13 Tishreen University Journal. Bas. Sciences Series مجلة جامعة تشرین العلوم الا ساسیة المجلد (٣٠) العدد (٢) ٢٠٠٨ تغیرات درجة حرارة طور الترمید 4 Cd H SO تغیرات درجة حرارة التذریر 9 Cd H SO - ٢٣١
14 NaCl,,,,, مولاریة حمض الكبریت كقالب تعدیل.3 Cd ٢٣٢
15 Tishreen University Journal. Bas. Sciences Series مجلة جامعة تشرین العلوم الا ساسیة المجلد (٣٠) العدد (٢) ٢٠٠٨ تغیرات درج ة حرارة الترمی د الامتصاص یة Cd H SO الامتصاص یة تغیرات درج ة حرارة الت ذریر Cd H SO ٢٣٣
16 ( ) ml (,,,,, ) ml ml μl Flow Rate of argon (l/min) Heat ode RAP Time(sec) PFT Coated Temp() PFT Coated RAP RAP STEP STEP STEP RSD% SD SD RSD% () ٢٣٤
17 Tishreen University Journal. Bas. Sciences Series مجلة جامعة تشرین العلوم الا ساسیة المجلد (٣٠) العدد (٢) ٢٠٠٨ ٢٣٥
18 Cd () A () R 2 = SW SW SW SW SW SW ٢٣٦
19 Tishreen University Journal. Bas. Sciences Series مجلة جامعة تشرین العلوم الا ساسیة المجلد (٣٠) العدد (٢) ٢٠٠٨ ml ml H SO RSD% SD SD RSD% () ٢٣٧
20 ٢٣٨ R 2 = () () Cd A
21 Tishreen University Journal. Bas. Sciences Series مجلة جامعة تشرین العلوم الا ساسیة المجلد (٣٠) العدد (٢) ٢٠٠٨ SW SW SW SW SW SW (APDC-CHCl ) ٢٣٩
22 (APDC- CHCl ) Platform H SO (APDC-CHCl ) Coated Coated HNO H SO (μg/l) Cd ** - ***(pg/ ) (μg/l) (APDC- CHCl ) (Characteristic ass) *** x x pg ٢٤٠
23 Tishreen University Journal. Bas. Sciences Series مجلة جامعة تشرین العلوم الا ساسیة المجلد (٣٠) العدد (٢) ٢٠٠٨ (Characteristic ass) x pg x HNO pg/ H SO pg/ H SO pg/ Hoenig pg/ Grotti pg/ pg/ pg/ pg/ Solid-phase extraction S, Cassiana pg/ K, Truus ٢٤١
24 HOENIG, ; PUSKARIC, E; CHOISY, P; WARTEL,. Direct determination of high-and mid-volatile elements (Cd, Pb, n) in seawater by electrothermal AAS, Analusis,,,. BOWEN, H. G.. Trace elements in Biochemistry, Academic Press, New York,. GROTTI, ; ABELOSCHI,.L; SOGGIA, F; FRACHE, R. Determination of trace metals in sea-water by electrothermal atomic orption spectrometry following solid-phase extraction: quantification and reduction of residual matrix effects, J.Anal. At. Spectrom,,,. KNOWLES,. ethods for the determination of Cadmium in seawater with zeeman background correction, Varian instruments at work,, AA. TRAN, T. N. Direct determination of As, Cu and Pb in Seawater by zeeman graphite furnace atomic orption spectrometry, Varian instruments at work,, AA. HOENIG, ; HOEYWEGHEN, P. V. Direct determination of g in seawater by ETA-AAS with deuterium background correction using a platform and platinum matrix modifier, Varian instruments at work,, AA. QUIGLEY,. N; VERNON, F. Determination of trace metal ion concentrations in seawater,,,,. HARAGUCHI, H; FUWA, K. arine analysis by atomic orption spectrometry, Atomic Absorption Spectrometry, J. E. Cantle, Elsevier Scientific Company- Amsterdam, Netherlands,,. FAREY, B. J; NELSON, L. A. Water and effluents, Atomic Absorption Spectrometry, J. E. Cantle, Elsevier Scientific Company-Amsterdam, Netherlands,,. EBDON, L. Fin, industrial and other chemicals, Atomic Absorption Spectrometry, J. E. Cantle, Elsevier Scientific Company-Amsterdam, Netherlands,,. GEORGE, C. Y; CHAN, W. T. Determination of lead in a chloride matrix by atomic orption spectrometry using electrothermal vaporization and capacitively coupled plasma atomization, Journal of Analytical Atomic Spectrometry, arch,,. TRUUS, K; VIITAK, A; VAHER, ; UINASAA, U; PAASRAND, K; TUVIKENE,R; LEVANDI,T. Comparative determination of microelements in Baltic seawater and brown algae samples by atomic orption spectrometric and inductively coupled plasma methods, Proc. Estonian Acad. Sci. Chem,,,,. QUIGLEY, N. ; VERNON, F. A matrix modification experiment for use in electrothermal atomic orption spectrometry, Journal of Chemical Education,,,,. ٢٤٢
25 Tishreen University Journal. Bas. Sciences Series مجلة جامعة تشرین العلوم الا ساسیة المجلد (٣٠) العدد (٢) ٢٠٠٨ CIADEVILLA, E. A; WROBEL, K; ALFREDO, S. Capabilities and limitations of different techniques in electrothermal atomic orption spectrometry for direct monitoring of arsenic, cadmium and lead contamination of sea-water, Journal of Analytical Atomic Spectrometry,, ( ),. ARECHAL-ABRA, N. Direct determination of Cd in seawater by graphite furnace-atomic orbance spectrometry with Zeeman-effect background correction, Geoscience Reports of Shizuoka University,,, VOLYNSKY, A. B; AKAN, S; DOGAN, C. E; KOKLU, U. Application of colloidal palladium modifier for the determination of As, Sb and Pb in a spiced sea water sample by electrothermal atomic orption spectrometry. Spectrochim. Acta, Part B,,,.. ; ; CASSIANA, S. N; PAULO, R.. C; PEDRO, V. O; ELISABETH, O. W+Rh as permanent chemical modifier in simultaneous atomic orption spectrometry: Interference studies on As, Cd, Pb and Se determination, J. Braz. Chem. Soc.,,,. ٢٤٣
26 ٢٤٤
Tishreen University Journal for Research and Scientific Studies - Basic Sciences Series Vol. ( ) No. ( ) ETA-AAS
Tishreen University Journal for Research and Scientific Studies - Basic Sciences Series Vol. ( ) No. ( ) ETA-AAS pg/ pg/ HNO HNO ١٠٧ ETA-AAS Tishreen University Journal for Research and Scientific Studies
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