Developments and trends in flow injection atomic absorption spectrometry

Fang, Zheng; Xu, Shukun; Tao, Guanhong

doi:10.1039/ja9961100001

Cited by 61 publications

(38 citation statements)

References 397 publications

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“…The in-atomizer trapping procedure, which concentrates the element of interest in the atomizer prior to atomization [14], has a greater relative sensitivity than that of direct introduction of the sample solution into the furnace, as a much larger volume of sample may be processed. HG procedures may be readily automated by the use of flow injection (FI) methodology which, in addition to improved precision and throughput, also has the benefits of decreased reagent consumption and decreased interferences through kinetic masking [15]. However, detection limits for FI-HG procedures are constrained by reagent blank values, and there may be little to be gained from sample volumes of more than 500-1000 ml [16].…”

Section: Introductionmentioning

confidence: 99%

Flow injection hydride generation electrothermal atomic absorption spectrometry with in-atomizer trapping for the determination of lead in calcium supplements

Tyson

Ellis

Carnrick

et al. 2000

Talanta

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Lead hydride was generated from acid solution, containing potassium ferricyanide as an oxidizing agent, by the reaction with alkaline borohydride solution. The effects of reaction conditions (hydrochloric acid, ferricyanide and borohydride concentrations), and the lengths of reaction and stripping coils were studied. The effects of trapping temperature and argon flow rate were also investigated. Under the conditions giving the best peak area sensitivity, the detection limit (concentration giving a signal equal to three S.D. of the blank signal) was 0.12 mgl − 1 for a 1000 ml injection volume. The detection limit was improved to 0.03 mgl − 1 when the ferricyanide was purified b y passage through a cation-exchange resin. Two calcium supplement materials were analyzed by the flow i njection ( , respectively.

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Section: Introductionmentioning

confidence: 99%

Flow injection hydride generation electrothermal atomic absorption spectrometry with in-atomizer trapping for the determination of lead in calcium supplements

Tyson

Ellis

Carnrick

et al. 2000

Talanta

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“…In this sense, online separation techniques have received considerable attention in flow injection (FI) coupled with atomic absorption spectrometry for selectivity and sensitivity enhancement. 2 In contrast with off-line pretreatment procedures, which are timeconsuming, tedious to operate and involve complex procedures with high contamination risk, this automation of the sample pretreatment has increased the sample throughput and decreased the potential for sample contamination, which is critical in trace analysis.…”

Section: Introductionmentioning

confidence: 99%

Minicolumn Field Sampling-Preconcentration of Trace Zinc from Seawater and Its Laboratory Detection by Flow Injection Flame Atomic Absorption Spectrometry

Yebra-Biurrun

Cespón-Romero

2006

ANAL. SCI.

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A simple field sampling-preconcentration method for zinc determination in seawater is described. Seawater was collected in situ by pumping it through a minicolumn packed with a chelating resin (Chelite P) connected to a field flow preconcentration system (FFPS). These packed minicolumns retain the dissolved zinc, and once are loaded with the analyte, they are returned to the laboratory where they are sequentially inserted into a flow injection system for on-line zinc elution with diluted hydrochloric acid and flame atomic absorption spectrometric detection. A factorial design has been used to optimize the FFPS and the flow injection elution process. The proposed method has a linear calibration range from 0.07 to at least 9.4 µg L -1 of zinc, with a detection limit of 0.02 µg L -1 and a throughput of 26 samples h -1 . Validation was carried out against certified reference water samples. This procedure has been successfully applied to the determination of Zn in seawater samples from Galicia (Spain).

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“…Many of the systems were devoted to rationalization or automation of traditional calibration procedures. [1][2][3] An area when rationalization of calibration stage can be exploited directly is proposed by R/žibka et al: flow injection gradient titration. 4 In this kind of titration, usually a small volume of sample is injected into a flowing stream of titrant and transported to a detector through a system, assuring achievement of high values of dilution factors.…”

Section: Introductionmentioning

confidence: 99%

Application of Flow Injection Gradient Titration Based on the Standard Addition and Dilution Procedure to the Determination of Total Acidity in Vinegars and Soft Drinks

et al. 2008

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Developments and trends in flow injection atomic absorption spectrometry

Cited by 61 publications

References 397 publications

Flow injection hydride generation electrothermal atomic absorption spectrometry with in-atomizer trapping for the determination of lead in calcium supplements

Flow injection hydride generation electrothermal atomic absorption spectrometry with in-atomizer trapping for the determination of lead in calcium supplements

Minicolumn Field Sampling-Preconcentration of Trace Zinc from Seawater and Its Laboratory Detection by Flow Injection Flame Atomic Absorption Spectrometry

Application of Flow Injection Gradient Titration Based on the Standard Addition and Dilution Procedure to the Determination of Total Acidity in Vinegars and Soft Drinks

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