Ultra-trace determination of cadmium by vapour generation atomic fluorescence spectrometry

Ebdon, Les; Goodall, Phillip; Hill, Steve J.; Stockwell, Peter; Thompson, K. Clive

doi:10.1039/ja9930800723

Cited by 39 publications

(20 citation statements)

References 9 publications

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“…Methods for the HG determination of Cd by AFS [22], and ICP-MS [23], have also been reported, as have several procedures in which the volatile ethyl derivative was produced by reaction with tetraethyl borate [24,25].…”

Section: Cesar Vargas-razo · Julian F Tysonmentioning

confidence: 99%

Determination of cadmium by flow injection-chemical vapor generation-atomic absorption spectrometry

Vargas-Razo¹,

Tyson²

2000

Fresenius' Journal of Analytical Chemistry

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A method was developed for the generation of a "cold vapor" of cadmium by means of flow injectionchemical vapor generation from aqueous samples, the determination being conducted with an atomic absorption spectrometer (Pyrex glass T-cell). Several gas-liquid separator designs, atomizer designs, and the effect of several reagents previously reported as sensitivity enhancers (including cobalt, nickel, thiourea and didodecyl-dimethylammonium bromide) were investigated. The limit of detection, calculated as the concentration giving a signal equal to three times the standard deviation of the blank, was 16 ng L -1 , and the relative standard deviation was 1.4% for a concentration of 2 µg L -1 and 3.8% for 0.1 µg L -1 . The addition of nickel and thiourea to the samples provided improved tolerance to the interference of coexisting ions. Two NIST certified reference materials, Montana Soil and Apple Leaves (respectively containing 41.7 ± 0.25 mg kg -1 Cd and 0.013 ± 0.002 mg kg -1 Cd) were accurately analyzed. The interference of lead was overcome by coprecipitation with barium sulfate, and the experimental values obtained were 41 ± 1 mg kg -1 Cd and 0.013 ± 0.002 mg kg -1 Cd, respectively.

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Section: Cesar Vargas-razo · Julian F Tysonmentioning

confidence: 99%

Determination of cadmium by flow injection-chemical vapor generation-atomic absorption spectrometry

Vargas-Razo¹,

Tyson²

2000

Fresenius' Journal of Analytical Chemistry

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“…Fortunately, in recent years, determination of Cd by vapor generation has become feasible. [3][4][5][6][7][8][9][10][11][12][13] Derivatization with sodium tetraethylborate to yield volatile metal alkyls has been shown to be a viable vapor generation technique for Cd. [3][4][5] Batch methods, coupled with AAS, 3 or interfaced with AFS, 4 and continuous-flow generation coupled with ICP-AES 5 have been studied.…”

mentioning

confidence: 99%

“…[3][4][5][6][7][8][9][10][11][12][13] Derivatization with sodium tetraethylborate to yield volatile metal alkyls has been shown to be a viable vapor generation technique for Cd. [3][4][5] Batch methods, coupled with AAS, 3 or interfaced with AFS, 4 and continuous-flow generation coupled with ICP-AES 5 have been studied. Using NaBH 4 as the reducing agent, others have reported the generation of a volatile Cd species in organized media, [6][7][8]13 and its determination by AAS, 6 ICP-AES 7 and cold vapor (CV)AAS.…”

mentioning

confidence: 99%

Determination of Cadmium in Environmental Samples by Hydride Generation with In Situ Concentration and Atomic Absorption Detection

Matusiewicz

Kopras²,

Sturgeon³

1997

Analyst

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A volatile Cd species (presumed to be the hydride) was generated from aqueous solutions by merging sample and tetrahydroborate reductant in a continuous-flow system. The gaseous analyte was transferred onto the inner wall of a graphite tube furnace for in situ preconcentration at 200 degrees C. Calibration was achieved via the method of standard additions. An absolute detection limit (3 sigma blank) of 10 pg was obtained using KBH4 as reductant. The precision of the determination was 12% (RSD) for a Cd concentration of 0.2 ng ml-1 using KBH4. The method was successfully applied to the determination of Cd in several certified environmental reference materials (soil, sediment, sea-water, biological samples) following pressure digestion of the samples by microwave heating in a mixture of acids.

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“…[217][218][219][220][221][222][223][224][225][226][227][228][229][230][231][232][233][234] Hasan and Kumar 227 studied the interference due to calcium and magnesium in the flameless atomic absorption spectrometric determination of cadmium in groundwater. A matrix-modifying reagent consisting of ammonium nitrate and orthophosphoric acid was used to suppress this interference.…”

Section: Atomic Absorption Spectrometrymentioning

confidence: 99%

Metals in River Water

Crompton

2015

Determination of Metals in Natural Waters, Sediments and Soils

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Ultra-trace determination of cadmium by vapour generation atomic fluorescence spectrometry

Cited by 39 publications

References 9 publications

Determination of cadmium by flow injection-chemical vapor generation-atomic absorption spectrometry

Determination of cadmium by flow injection-chemical vapor generation-atomic absorption spectrometry

Determination of Cadmium in Environmental Samples by Hydride Generation with In Situ Concentration and Atomic Absorption Detection

Metals in River Water

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