Study of the influence of ordered media on the determination of lead by hydride generation inductively coupled plasma atomic emission spectrometry

Temprano, M. C. Valdés-Hevia y; Fernández, Beatriz; Campa, M.R. Fernández de la; Sanz‐Medel, Alfredo

doi:10.1016/0003-2670(93)85220-e

Cited by 30 publications

(7 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Likewise electrothermal atomic absorption spectrometry (ETAAS) is a very attractive option for the determination of trace amounts of lead in water samples [10]. Hydride generation coupled with inductively coupled plasma atomic emission spectrometry (ICP-AES) has been used for the determination of trace amounts of lead by Valdés-Hevia et al [11]. Unfortunately, the method presents problems derived from the well-known characteristics of PbH 4 (instability at room temperature, slow kinetics and relatively poor generation efficiency) [12].…”

Section: Introductionmentioning

confidence: 99%

Automatic on line preconcentration and determination of lead in water by ICP-AES using a TS-microcolumn

Zougagh

Torres

Alonso

et al. 2004

Talanta

View full text Add to dashboard Cite

A simple, sensitive, low-cost and rapid, flow injection system for the on-line preconcentration of lead by sorption on a microcolumn packed with silica gel funtionalized with methylthiosalicylate (TS-gel) was developped. The metal is directly retained on the sorbent column and subsequently then eluted from it by EDTA. Five variables (sample flow rate, eluent flow rate, eluent concentration, pH and buffer concentration) were considered as factors in the optimization process. Interactions between analytical factors and their optimal levels were investigated using two level factorial and Box-Behnken designs. The optimum conditions established were applied to the determination of lead by flow injection inductively coupled plasma atomic emission spectrometry (FI-ICP-AES). The proposed method has a linear calibration range from 10 to at least 500 ng ml −1 of lead. At a sample frequency of 24 h −1 and a 120 s preconcentration time, the enrichment factor was 41, the detection limit was 15.3 ng ml −1 (S/N = 3) and the precision, expressed as relative standard deviation, was 0.9% (at 100 ng ml −1 ). Validation of the developed method was carried out against electrothermal atomic absorption spectrometry analysis without statistically significant differences between the proposed method and the atomic absorption method.

show abstract

Section: Introductionmentioning

confidence: 99%

Automatic on line preconcentration and determination of lead in water by ICP-AES using a TS-microcolumn

Zougagh

Torres

Alonso

et al. 2004

Talanta

View full text Add to dashboard Cite

show abstract

“…4, curve C shows the observed effect of citric acid using a different PbH4 generation system, namely, ammonium persulfate-nitric acid-cetyltrimethylammonium bromide (CTAB). 26 It can be seen that the effect of citric on Pb signals is much less in this latter PbH4 generation medium.…”

Section: Effect Of the Nature Of The Acid Used For Pbh4 Generationmentioning

confidence: 84%

“…23 The generation of plumbane has also been achieved from organic medial6-** and from 'ordered media' (micelles and vesicles). 26 Madrid et aL7 compared different systems and methodologies for plumbane generation by AAS techniques. They concluded that to their knowledge the best oxidant system was potassium dichromate-lactic acid.7…”

mentioning

confidence: 99%

Sensitive method for determination of lead by potassium dichromate–lactic acid hydride generation inductively coupled plasma atomic emission spectrometry

Temprano¹,

Campa²,

Sanz‐Medel³

1993

J. Anal. At. Spectrom.

View full text Add to dashboard Cite

“…It has been claimed in recent reports [1][2][3][4][5][6][7] that in the determination of hydride forming elements by atomic spectrometry, an improvement in sensitivity may be achieved by the addition of surfactants. Several of these studies also report an increased tolerance to potential interferences in the presence of the surfactants and in some cases the presence of the surfactant is said to be "essential for the efficient formation of the volatile species in the reaction vessel" [6].…”

Section: Introductionmentioning

confidence: 99%

“…Several of these studies also report an increased tolerance to potential interferences in the presence of the surfactants and in some cases the presence of the surfactant is said to be "essential for the efficient formation of the volatile species in the reaction vessel" [6]. These phenomena have been investigated for several elements including arsenic [3], lead [1,2], and cadmium [4][5][6]. A similar effect has been reported in the determination of mercury by "cold vapor" procedures [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Use of a surfactant in the determination of arsenic by flow injection hydride generation atomic absorption spectrometry

Ellis

Tyson

1996

Spectrochimica Acta Part B: Atomic Spectroscopy

View full text Add to dashboard Cite

The possible benefits of the addition of an anionic surfactant, didodecyldimethylammonium bromide, in the determination of arsenic, by flow injection hydride generation atomic absorption spectrometry using a flame-heated quartz tube atomizer, were studied in the light of previous reports concerning the effects of surfactants on chemical vapor generation procedures. Con centrations of arsenic between 5 and 30 µg 1-1 were used. Calibrations in the presence and absence of the surfactant in the sample solution were not significantly different, either for the case where vesicles were formed in the presence of the analyte or where they were preformed in the surfactant solution and then added to the analyte. The surfactant had no effect on recoveries in the presence of copper, nickel or bismuth. The addition of the surfactant to the acid carrier and/or borohydride streams had no effect. It is proposed that there may be a greater role for surfactants in the improvement of the processes by which the hydride is transferred to the bulk gas phase than has been attributed in previous reports on this subject.

show abstract

Study of the influence of ordered media on the determination of lead by hydride generation inductively coupled plasma atomic emission spectrometry

Cited by 30 publications

References 18 publications

Automatic on line preconcentration and determination of lead in water by ICP-AES using a TS-microcolumn

Automatic on line preconcentration and determination of lead in water by ICP-AES using a TS-microcolumn

Sensitive method for determination of lead by potassium dichromate–lactic acid hydride generation inductively coupled plasma atomic emission spectrometry

Use of a surfactant in the determination of arsenic by flow injection hydride generation atomic absorption spectrometry

Contact Info

Product

Resources

About