Determination of vanadium (V) in drinking water by flow injection and pre-concentration in a knotted reactor by inductively coupled plasma optical emission spectrometry with ultrasonic nebulization

被引:41
作者
Wuilloud, RG [1 ]
Salonia, JA [1 ]
Olsina, RA [1 ]
Martinez, LD [1 ]
机构
[1] Natl Univ San Luis, Fac Chem Biochem & Pharm, Dept Analyt Chem, RA-5700 San Luis, Argentina
关键词
vanadium determination; drinking water; inductively coupled plasma optical emission spectrometry; ultrasonic nebulization; knotted reactor; 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol reagent;
D O I
10.1016/S0584-8547(00)00215-9
中图分类号
O433 [光谱学];
学科分类号
0703 ; 070302 ;
摘要
An on-line vanadium pre-concentration and determination system implemented with inductively coupled plasma optical emission spectrometry (ICP-OES) associated with a flow injection (FI) method with ultrasonic nebulization (USN) system was studied, The vanadium was retained as vanadium-2-(5-bromo-2-pyridylazo)-5-diethylaminophenol V(V)-(5-Br-PADAP) complex, at pH 3.2. The vanadium complex was removed from the knotted reactor (KR) with 30% v/v nitric acid, A sensitivity enhancement factor of 180 was obtained with respect to ICP-OES using pneumatic nebulization (15 for USN and 12 for KR). The value of detection limit for the pre-concentration of 10 mi of aqueous solution was 19 ng 1(-1). The precision for 10 replicate determinations at the 5 mu g 1(-1) V(V) level was 2.6% relative standard deviation (R.S.D.), calculated with the peak heights obtained. The calibration graph using the pre-concentration system for vanadium was linear with a correlation coefficient of 0.9995 at levels near the detection limits up to at least 100 mu g 1(-1). The method was successfully applied to the determination of vanadium in drinking water samples, (C) 2000 Elsevier Science B.V. All rights reserved.An on-line vanadium pre-concentration and determination system implemented with inductively coupled plasma optical emission spectrometry (ICP-OES) associated with a flow injection (FI) method with ultrasonic nebulization (USN) system was studied, The vanadium was retained as vanadium-2-(5-bromo-2-pyridylazo)-5-diet V(V)-(5-Br-PADAP) complex, at pH 3.2. The vanadium complex was removed from the knotted reactor (KR) with 30% v/v nitric acid, A sensitivity enhancement factor of 180 was obtained with respect to ICP-OES using pneumatic nebulization (15 for USN and 12 for KR). The value of detection limit for the pre-concentration of 10 mi of aqueous solution was 19 ng 1(-1). The precision for 10 replicate determinations at the 5 mu g 1(-1) V(V) level was 2.6% relative standard deviation (R.S.D.), calculated with the peak heights obtained. The calibration graph using the pre-concentration system for vanadium was linear with a correlation coefficient of 0.9995 at levels near the detection limits up to at least 100 mu g 1(-1). The method was successfully applied to the determination of vanadium in drinking water samples, (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:671 / 680
页数:10
相关论文
共 35 条
[1]   NON-EXTRACTIVE SPECTROPHOTOMETRIC DETERMINATION OF VANADIUM(V) IN ALLOYS AND ENVIRONMENTAL, BIOLOGICAL AND SOIL SAMPLES USING 5,7-DIBROMO-8-HYDROXYQUINOLINE [J].
AHMED, MJ ;
BANERJEE, AK .
ANALYST, 1995, 120 (07) :2019-2023
[2]   DETERMINATION OF VANADIUM IN WATER BY ELECTROTHERMAL ATOMIZATION ATOMIC-ABSORPTION SPECTROMETRY AFTER EXTRACTION WITH 8-HYDROXYQUINOLINE IN ISOBUTYL METHYL KETONE [J].
BERMEJOBARRERA, P ;
BECEIROGONZALEZ, E ;
BERMEJOBARRERA, A ;
BERMEJOMARTINEZ, F .
ANALYST, 1990, 115 (05) :545-547
[3]   DETERMINATION OF COPPER IN WATER AND RICE SAMPLES BY FLAME ATOMIC-ABSORPTION SPECTROMETRY WITH FLOW-INJECTION ONLINE ADSORPTION PRECONCENTRATION USING A KNOTTED REACTOR [J].
CHEN, HW ;
XU, SK ;
FANG, ZL .
ANALYTICA CHIMICA ACTA, 1994, 298 (02) :167-173
[4]   A KINETIC METHOD FOR DETERMINATION OF FREE VANADIUM(IV) AND VANADIUM(V) AT TRACE LEVEL CONCENTRATIONS [J].
CRANS, DC ;
GOTTLIEB, MS ;
TAWARA, J ;
BUNCH, RL ;
THEISEN, LA .
ANALYTICAL BIOCHEMISTRY, 1990, 188 (01) :53-64
[5]  
Fairman B, 1996, FRESEN J ANAL CHEM, V355, P757
[6]   FLAME ATOMIC-ABSORPTION SPECTROMETRIC DETERMINATION OF LEAD IN BIOLOGICAL SAMPLES USING A FLOW-INJECTION SYSTEM WITH ONLINE PRECONCENTRATION BY COPRECIPITATION WITHOUT FILTRATION [J].
FANG, ZL ;
SPERLING, M ;
WELZ, B .
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY, 1991, 6 (04) :301-306
[7]   CATALYTIC DETERMINATION OF VANADIUM IN WATER [J].
FISHMAN, MJ ;
SKOUGSTA.MW .
ANALYTICAL CHEMISTRY, 1964, 36 (08) :1643-&
[8]  
Fox M.R.S., 1988, Handbook on Toxicity of Inotganic Compounds, P345
[9]  
FUJIWARA K, 1986, BUNSEKI KAGAKU, V35, P361
[10]   ULTRASONIC NEBULIZATION IN INDUCTIVELY COUPLED PLASMA ATOMIC EMISSION-SPECTROMETRY [J].
GALLI, P ;
ODDO, N .
MICROCHEMICAL JOURNAL, 1992, 46 (03) :327-334