Comparison of conventional and fast thermal programme approaches for determination of total and extractable Cd in sediments by electrothermal atomic absorption spectrometry following sequential extraction

Filgueiras, Ana Virginia; Lavilla, Isela; Bendicho, Carlos

doi:10.1016/s0003-2670(02)00593-7

Cited by 6 publications

(4 citation statements)

References 9 publications

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“…Fast furnace programs were found to be suitable for the simultaneous determination of the four elements in aqua regia digests of soils and sediments. Filgueiras et al 156 compared the conventional and fast thermal programme approaches for the determination of total and extractable Cd in sediments by EAAS following the BCR sequential extraction scheme. Quantitative Cd recoveries could be attained when hot injection and omission of the pyrolysis stage were implemented even in the absence of a Pd matrix modifier.…”

Section: Atomic Absorption Spectrometrymentioning

confidence: 99%

“…The processes involved in the preparation and validation of RMs certified for their extractable trace element content are described, together with an overview of the latest developments in CRM production. Various modifications of the original BCR and later ST&M three-step extraction schemes have been reported for specific applications, 114,125,126,136,156,296,297 mainly with the aim of reducing the extraction times. However, they only serve to emphasise the importance of the BCR CRMs in the validation of any proposed alternative methodology.…”

Section: Sample Dissolutionmentioning

confidence: 99%

“…Using a transversely heated graphite atomiser and longitudinal Zeeman-effect background correction, Myohanen et al 155 developed a heating programme that required no pyrolysis stage or chemical modifier for the determination of As, Cd, Cr and Pb in aqua regia digests of soils and sediments. Filgueiras et al 156 have compared conventional and fast thermal programmes approaches for the determination of total and extractable Cd in sediments. Quantitative recoveries of Cd were achieved by injecting samples onto a preheated platform and omitting the pyrolysis stage, even in the absence of a palladium modifier.…”

Section: Instrumental Analysismentioning

confidence: 99%

See 2 more Smart Citations

Atomic spectrometry update. Environmental analysis

Hill

Arowolo

Butler

et al. 2004

J. Anal. At. Spectrom.

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Section: Atomic Absorption Spectrometrymentioning

confidence: 99%

Section: Sample Dissolutionmentioning

confidence: 99%

Section: Instrumental Analysismentioning

confidence: 99%

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Atomic spectrometry update. Environmental analysis

Hill

Arowolo

Butler

et al. 2004

J. Anal. At. Spectrom.

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“…17,18 The choice of matrix modifier depended not only on the matrix composition, but also on the specific characteristics of a particular element in ETAAS determinations. 16,[19][20][21][22][23][24][25][26] . In the analysis of samples with complex matrices, mixed and composite modifiers rather than individual ones are often preferred.…”

Section: Introductionmentioning

confidence: 99%

Determination of Cd, Pb and As in sediments of the Sava river by electrothermal atomic absorption spectrometry

Murko

Milačić

Veber

et al. 2010

JSCS

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The applicability of nitric acid, palladium nitrate and a mixture of palladium and magnesium nitrate as matrix modifiers was estimated for the accurate and reproducible determination of cadmium (Cd), lead (Pb) and arsenic (As) in sediments of the Sava River by electrothermal atomic absorption spectrometry, ETAAS. Decomposition of the samples was done in a closed vessel microwave-assisted digestion system using nitric, hydrochloric and hydrofluoric acids, followed by the addition of boric acid to convert the fluorides into soluble complexes. The parameters for the determination of Cd, Pb and As in sediments were optimised for each individual element and for each matrix modifier. In addition, two sediment reference materials were also analysed. In determination of Cd and Pb, nitric acid was found to be the most appropriate matrix modifier. The accurate and reliable determination of Cd and Pb in sediments was possible also in the presence of boric acid. The use of a mixture of palladium and magnesium nitrate efficiently compensated for matrix effects and enabled the accurate and reliable determination of As in the sediments. Quantification of Cd and As was performed by calibration using acid matched standard solutions, while the standard addition method was applied for the quantification of Pb. The repeatability of the analytical procedure for the determination of Cd, Pb and As in sediments was ±5 % for Cd, ±4 % for Pb and ±2 % for As. The LOD values of the analytical procedure were found to be 0.05 mg/kg for Cd and 0.25 mg/kg for Pb and As, while the LOQ values were 0.16 mg/kg for Cd and 0.83 mg/kg for Pb and As. Finally, Cd, Pb and As were successfully determined in sediments of the Sava River in Slovenia.

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