Simultaneous determination of cobalt, nickel and copper in seawater with a multi-element electrothermal atomic absorption spectrometer and microcolumn preconcentration

Lin, Pyeng-Huang; Danadurai, K. Suresh Kumar; Huang, Shang‐Da

doi:10.1039/b008510n

Cited by 38 publications

(21 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…So, it is very important and necessary to develop reliable, fast and sensitive methods for the determination of heavy metals in environmental and biological samples. Several techniques such as neutron activation analysis (Zecca et al 2001), energy dispersive X-ray fluorescence spectrometry (Eksperiandova et al 2002), inductively coupled plasmaatomic emission spectrometry (Rao et al 2002), atomic absorption spectrometry using either flame (Chen and Teo 2001) or electro thermal atomization (Lin et al 2001), chromatography (Ding et al 2000), electroanalytical techniques (Lu et al 2000) and UV-vis spectrophotometry (Li et al 2002), have been used for the multielement analysis in different matrices. Most of these methods necessitate using rather sophisticated and high cost operated instruments.…”

Section: Introductionmentioning

confidence: 99%

Determination trace amounts of copper, nickel, cobalt and manganese ions in water samples after simultaneous separation and preconcentration

Afzali¹,

Mohammadi

2009

Environ Chem Lett

View full text Add to dashboard Cite

In the present article, a simple, rapid, sensitive and economical method has been developed for the simultaneous separation and preconcentration of the trace amounts of copper, nickel, cobalt and manganese in water samples by using modified XAD-4 resins. The sorption was quantitative in the pH range 6.0-9.0, whereas quantitative desorption occurred instantaneously with 5.0 mL of 2 M HNO 3 , and selected elements have been determined by using flame atomic absorption spectrometry. Dynamic ranges were 0.04-3.5, 0.1-6.0, 0.04-4.5 and 0.04-4.0 lg/ mL for copper, nickel, cobalt and manganese, respectively. The detection limits were 9.2, 28.6, 12.3 and 5.7 ng/mL for Cu(II), Ni(II), Co(II) and Mn(II), respectively. The effects of the experimental parameters, including the sample pH, eluent type, interference ions and breakthrough volume, were studied for separation and preconcentration of Cu(II), Ni(II), Co(II) and Mn(II) ions. Determination of these ions in standard samples confirmed that the proposed method has good accuracy. The proposed method was used for the determination of these ions in water samples.

show abstract

Section: Introductionmentioning

confidence: 99%

Determination trace amounts of copper, nickel, cobalt and manganese ions in water samples after simultaneous separation and preconcentration

Afzali¹,

Mohammadi

2009

Environ Chem Lett

View full text Add to dashboard Cite

show abstract

“…So, it is very important and necessary to develop reliable, fast and sensitive methods for the determination of heavy metals in environmental and biological samples. Several techniques such as neutron activation analysis (NAA) [1], energy dispersive X-ray fluorescence (XRF) spectrometry [2,3], inductively coupled plasma-atomic emission spectrometry (ICP-AES) [4,5], atomic absorption spectrometry using either flame (FAAS) [6][7][8], or electrothermal atomization (ETAAS) [9][10][11], chromatography [12][13][14][15][16], electroanalytical techniques [17,18], UV-Vis spectrophotometry [19][20][21][22], have been used for the multielement analysis in different matrices. Also, inductively coupled plasma-mass spectrometry (ICP-MS) can be used as a very popular technique for trace element determination.…”

Section: Introductionmentioning

confidence: 99%

<b>SIMULTANEOUS SEPARATION AND PRECONCENTRATION OF TRACE AMOUNT OF COPPER, NICKEL, CADMIUM AND ZINC IONS ONTO MODIFIED AMBERLITE XAD-4 LOADED WITH 5-Br-PADAP</b>

Taher

Mostafavi

Mobarake

et al. 2006

Bull. Chem. Soc. Eth.

View full text Add to dashboard Cite

ABSTRACT. In this work, a simple, rapid, selective, sensitive and economical method has been developed for the simultaneous separation and preconcentration of trace amounts of copper, nickel, cadmium, and zinc in aqueous medium using XAD-4 resins that were modified with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (5-Br-PADAP) as an analytical reagent. The sorption is quantitative in the pH range 7.0-9.5, whereas quantitative desorption occurs instantaneously with 2 M HCl and selected trace elements have been determined using flame atomic absorption spectrometry. The linearity is maintained between 0.04-4.0 mg L -1 for copper, 0.1-4.0 mg L -1 for nickel, 0.02-1.3 mg L -1 for cadmium and 0.01-1.4 mg L -1 for zinc. The detection limits were 12 µg L -1 for Cu(II), 30 µg L -1 for Ni(II), 6 µg L -1 for Cd(II), and 4 µg L -1 for Zn(II) in the final solution. Various parameters such as the effect of pH, flow rate, breakthrough volume and interference of a large number of anions and cations have been studied and the proposed method was used for determination of these metal ions in water and standard samples. In order to compare the proposed method, the actual water samples were analyzed by direct FAAS (using standard addition method). Determination of these metal ions in standard samples confirmed that the proposed method has good accuracy.

show abstract

“…better reproducibility and accuracy, higher sample throughput, lower consumption of reagent, prevention of contamination and easily automated operation. [12][13][14][15] Therefore, it has a bright future for both laboratory and field usage. Whether TCF could be packed in the minicolumn and developed as an online column preconcentration technique is another area of research interest.…”

Section: Introductionmentioning

confidence: 99%

Preconcentration and Determination of Trace Metals in Seawater Using a Thiol Cotton Fiber Minicolumn Coupled with Inductively Coupled Plasma Mass Spectrometry

Zhang

Han

et al. 2005

ANAL. SCI.

View full text Add to dashboard Cite

Direct determination of trace metals in seawater is a difficult task, not only because the concentration of many trace metals is close to or below the detection limits of most of the analytical instruments, but also the seawater matrix may cause serious interference for determination. Preconcentration and separation can solve these problems. There are many preconcentration methods, which include ion exchange, precipitation, solvent extraction and solid phase extraction. Among them the most commonly used method is solid phase extraction, 1-7 which enables preconcentration of trace metals from larger volumes of sample, reduction and/or elimination of matrix interferences, prevention of contamination, in-situ or online coupling with various detectors.If one compares fibers with other solid phase extraction materials, fibers have higher specific surface areas, approximately two orders of magnitude larger than that of a gelstructure granular ion-exchanger or 5 -6 times that of a porous copolymer. 8 Fiber also differs from crosslinked granular polymers in the presence of linear or branched macromolecules, which might have swelling capacity. Thus fibrous ionexchangers have good kinetic and mechanical characteristics. 9 Thiol cotton fiber (TCF) is a well-characterized chelating ion exchange fiber.Previously, Nishi developed TCF to preconcentrate trace methyl mercury in water.10 Gómez et al. determined Au and Ag(I) in the aquatic environment at the µg l -1 levels by applying TCF. 11 Seawater contains relatively high dissolved salt content (typically about 3.5%) and very low concentrations of trace metals. Therefore, analysis of trace metals in seawater is always a challenge. What we are interested in is whether TCF could be used to separate and preconcentrate trace metals in seawater. On the other hand, online techniques offer more advantages than the conventional manual batch procedures, i.e. better reproducibility and accuracy, higher sample throughput, lower consumption of reagent, prevention of contamination and easily automated operation.12-15 Therefore, it has a bright future for both laboratory and field usage. Whether TCF could be packed in the minicolumn and developed as an online column preconcentration technique is another area of research interest.In this work, an online preconcentration system was developed by using a TCF minicolumn coupled with ICP-MS for preconcentration and determination of trace metals Cu, Pb, Zn and Cd in seawater. Preconcentration parameters, including seawater sample pH, flow rate, preconcentration volume, eluent flow rate, eluent concentration and eluent volume, were experimentally optimized. The precision and accuracy of the method was demonstrated by the analysis of seawater certified reference materials CASS-4 and NASS-5. Experimental Reagent and solutionStock solutions of Cu, Pb, Zn and Cd, 1000 mg l -1 were prepared by dissolving an appropriate amount of metal oxide (Specpure, Johnson Matthey Chemicals) in nitric acid (67%, 5.0 ml).Single and multi-element standard solutions of ...

show abstract

Simultaneous determination of cobalt, nickel and copper in seawater with a multi-element electrothermal atomic absorption spectrometer and microcolumn preconcentration

Cited by 38 publications

References 29 publications

Determination trace amounts of copper, nickel, cobalt and manganese ions in water samples after simultaneous separation and preconcentration

Determination trace amounts of copper, nickel, cobalt and manganese ions in water samples after simultaneous separation and preconcentration

<b>SIMULTANEOUS SEPARATION AND PRECONCENTRATION OF TRACE AMOUNT OF COPPER, NICKEL, CADMIUM AND ZINC IONS ONTO MODIFIED AMBERLITE XAD-4 LOADED WITH 5-Br-PADAP</b>

Preconcentration and Determination of Trace Metals in Seawater Using a Thiol Cotton Fiber Minicolumn Coupled with Inductively Coupled Plasma Mass Spectrometry

Contact Info

Product

Resources

About