On-line Preconcentration and Determination of Traces of Lead in River-water and Seawater by Flow Injection-Flame Atomic Absorption Spectrometry and ICP-Mass Spectrometry

Seki, Toshio; Hirano, Yoshihiro; Oguma, Koichi

doi:10.2116/analsci.18.351

Cited by 23 publications

(16 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Urine analysis is often used for monitoring environmental and occupational exposure to trace elements because urine is the most readily available biological fluid, and most trace elements are mainly extracted via urine. 2 Several analytical techniques, such as atomic absorption spectrometry (AAS), [4][5][6][7] inductively coupled plasma-atomic emission spectrometry (ICP-AES) 8 and inductively coupled plasma-mass spectrometry (ICP-MS) 9 are available for the determination of trace metals with sufficient sensitivity for most applications. However, the determination of trace metal ions in urine samples is difficult due to various factors, particularly their low concentrations and matrix effects.…”

Section: Introductionmentioning

confidence: 99%

Sensitive and Simple Cloud-point Preconcentration Atomic Absorption Spectrometry: Application to the Determination of Cobalt in Urine Samples

Manzoori

Karim‐Nezhad

2003

ANAL. SCI.

View full text Add to dashboard Cite

A new approach for developing a cloud-point extraction-flame atomic absorption spectrometric method has been described and used for the determination of cobalt. In this approach, water was removed from the final diluted surfactant rich phase obtained in cloud-point extraction procedure. The results indicated that removing water from this phase increased the enhancement factor by 4-fold. 1-(2-Pyridylazo)-2-naphthol (PAN) and octylphenoxypolyethoxyethanol (Triton X-114) were used as a hydrophobic ligand and a nonionic surfactant, respectively. The chemical variables affecting the preconcentration step were optimized. The effect of the water concentration in the final diluted methanolic surfactant solution on the analytical signal was investigated. The results showed that the analytical signal decreased by 30% and 52% in 15% and 25% water concentrations in methanol, respectively. An enhancement factor of 115 was obtained for cobalt extracted from only 10 ml of a sample. The detection limit obtained under the optimal condition was 0.38 µg l -1 . The proposed procedure was applied to the determination of cobalt in urine samples.

show abstract

Section: Introductionmentioning

confidence: 99%

Sensitive and Simple Cloud-point Preconcentration Atomic Absorption Spectrometry: Application to the Determination of Cobalt in Urine Samples

Manzoori

Karim‐Nezhad

2003

ANAL. SCI.

View full text Add to dashboard Cite

show abstract

“…This characteristic of the resin has proven advantageous for the determination of trace lead in iron and steel [18], and the resin's high capacity for lead has been exploited for matrix removal for multielement determinations [19]. Recently, the procedure used for the analysis of iron and steel has been adapted [20] for the preconcentration and determination of lead in river and seawater materials by FI-FAAS and FI-ICP-MS.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Pb-Spec® for flow-injection solid-phase extraction preconcentration for the determination of trace lead in water and wine by flame atomic absorption spectrometry

Bakırcıoğlu

Segade

Yourd

et al. 2003

Analytica Chimica Acta

View full text Add to dashboard Cite

Two manifold designs were evaluated. Water samples and wine digests in 10% nitric acid were pumped through a column containing a commercially available resin (Pb-Spec ® ), an immobilized crown ether with a cavity size selective for Pb 2+ . The column was rinsed with 2% HNO 3 and the eluent, 0.1 mol l −1 ammonium oxalate was injected via a six-port rotary valve. The eluted lead was delivered to the flame atomic absorption spectrometer at 4.0 ml min −1 . The following flow-injection (FI) parameters were optimized: sample acidity and volume, loading and elution flow rates, and eluent composition and volume.The detection limit for the water samples, estimated from the noise on the signal obtained for 250 ml of 10 g l −1 loaded at 19.1 ml min −1 was 1 g l −1 . For 50 ml of wine digest loaded at 4 ml min −1 , the value was 3 g l −1 . The roles of loading flow rate and sample volume were investigated in detail. The variation in retention efficiency with loading flow rate showed that the amount of lead retained (during a fixed loading time) increased with flow rate until the upper performance limit of the peristaltic pump was reached. The variation of detection limit with sample volume followed the expected hyperbolic relationship and showed that only small improvements in LOD were obtained for volumes greater than 50 ml. The method was evaluated through spike recovery for both water and wine. The lead contents of tap (0.24 g l −1 ), pond (0.40 g l −1 ), and river waters (not detected) were determined. The concentrations of lead in three Port wine samples ranged from not detected to 190 g l −1 . No significant matrix suppression effects were observed.

show abstract

“…Mean values with ± standard deviations for 5 measurements. 2 The samples were taken on March 1, 2006 3 Sample volume: 10 ml 4 Sample volume: 5 ml Sample: 5 ng ml -1 Pb 2+ ( 5 ml), other conditions are the same as in Table 1 and Table 2 1000 Table 1 and Table 2 …”

Section: Resultsmentioning

confidence: 99%

“…[4] The preconcentration procedures, which employ solid phase extraction (SPE), provide dual advantages: an increase in analyte concentrations to measurable levels and the removal of potentially interfering matrices.…”

Section: Introductionmentioning

confidence: 99%

“…Most of the methods employed SPE as an on-line preconcentration step, prior to appropriate detection methods, such as atomic absorption spectrometry (AAS) [5][6][7] , electrothermal atomic absorption spectrometry ETAAS [8][9] , flame atomic absorption spectrometry (FAAS) [10][11][12][13][14][15] , inductively coupled plasma-mass spectrometry (ICP-MS) [4] , and inductively coupled plasma-atomic emission spectrometry (ICP-AES) [16][17][18] . Recently, Wang et.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Automated Online Preconcentration System for the Determination of Trace Amounts of Lead Using Pb‐Selective Resin and Inductively Coupled Plasma–Atomic Emission Spectrometry

Sabarudin

Lenghor

et al. 2006

Spectroscopy Letters

View full text Add to dashboard Cite

An automated sequential-injection on-line preconcentration system was developed for the determination of lead by inductively coupled plasma-atomic emission spectrometry (ICP-AES). The preconcentration of lead was performed with a mini-column containing a lead-selective resin, Analig® Pb-01, which was installed between a selection and a switching valve. In an acidic condition (pH 1), lead could be adsorbed on the resin. The concentrated lead was afterward eluted with 25 μl of 0.06M nitrilotriacetic acid (NTA) solution (pH 9), and was subsequently transported into the nebulizer of ICP-AES for quantification. The selectivity of the resin toward lead was examined using a solution containing a mixture of 61 elements. When a sample volume of 5 ml was used, the quantitative collection of lead (≥ 97%) was achieved, along with an enrichment factor of 19, a sampling frequency of 12 samples h -1 , a detection limit of 70 pg ml -1 , and a lowest quantification limit of 100 pg ml -1 .The linear dynamic range was 0.1 to 5 ng ml -1 , and the relative standard deviation (n = 9) was 1 0.5% at a 5 ng ml -1 Pb level. The detection limit of 30 pg ml -1 and lowest quantification limit of 50 pg ml -1 could be achieved when 10 ml of sample volume was used. The accuracy of the proposed method was validated by determining lead in the standard reference material of river water (SLRS-4), and its applicability to the determination of lead in environmental river water samples was demonstrated.

show abstract

On-line Preconcentration and Determination of Traces of Lead in River-water and Seawater by Flow Injection-Flame Atomic Absorption Spectrometry and ICP-Mass Spectrometry

Abstract: Lead is well known as one of the most toxic metals and noted in the field of environmental chemistry.

Cited by 23 publications

References 10 publications

Sensitive and Simple Cloud-point Preconcentration Atomic Absorption Spectrometry: Application to the Determination of Cobalt in Urine Samples

Sensitive and Simple Cloud-point Preconcentration Atomic Absorption Spectrometry: Application to the Determination of Cobalt in Urine Samples

Evaluation of Pb-Spec® for flow-injection solid-phase extraction preconcentration for the determination of trace lead in water and wine by flame atomic absorption spectrometry

Automated Online Preconcentration System for the Determination of Trace Amounts of Lead Using Pb‐Selective Resin and Inductively Coupled Plasma–Atomic Emission Spectrometry

Contact Info

Product

Resources

About