Review of procedures involving separation and preconcentration for the determination of cadmium using spectrometric techniques

Ferreira, Sérgio L.C.; Andrade, Jailson B. de; Korn, Maria das Graças Andrade; Pereira, Madson de Godói; Lemos, Valfredo Azevedo; Santos, Walter Nei Lopes dos; Rodrigues, Frederico de Medeiros; Souza, Anderson Santos; Ferreira, Hadla S.; Silva, Erik G. P. da

doi:10.1016/j.jhazmat.2007.03.077

Cited by 106 publications

(27 citation statements)

References 92 publications

(27 reference statements)

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“…Different analytical methods for the determination of Cd (II) ions have been reviewed several times (Sneddon and Vincent 2008;Ferreira et al 2007;Pyrzynska 2007;Davis et al 2006). Among them is stripping voltammetric determination of cadmium using mercury-based electrodes which is one of the very sensitive analytical methods available.…”

Section: Introductionmentioning

confidence: 99%

Trace determination of cadmium in water using anodic stripping voltammetry at a carbon paste electrode modified with coconut shell powder

2014

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Section: Introductionmentioning

confidence: 99%

Trace determination of cadmium in water using anodic stripping voltammetry at a carbon paste electrode modified with coconut shell powder

2014

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“…SPE is a commonly used preparation and preconcentration technique to increase the accuracy and reproducibility in elemental analysis of groundwater samples (Sah and Brown 1997;Ferreira et al 2007). It is interesting to note the significant loss of accuracy in analyte response in Fraction 2.…”

Section: Resultsmentioning

confidence: 99%

Varying matrix effects for elemental analysis identified from groundwater in the Barnett Shale

Carlton

Fontenot

Hildenbrand

et al. 2015

Int. J. Environ. Sci. Technol.

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The quality of analytical measurements can be influenced by the matrix of the sample of interest. The knowledge of the sample matrix allows for appropriate sample preparation, instrumental parameters, and quantification methods in an effort to achieve accurate results. Matrix matching can be difficult when sampling across various water sources with the possible introduction of unknown endogenous contaminants due to various degrees of land use, urbanization, and energy exploration, likely playing a factor. The degree of matrix effects in inductively coupled plasma-optical emission spectroscopy for nineteen metals from twenty groundwater samples across North Texas was assessed using a standard addition method. Matrix effects were characterized in collected groundwater samples (a) with no pretreatment, (b) after reversed-phase solid-phase extraction of possible organic contaminants, and (c) for a matrix of organic material retained on the reversed-phase sorbent. It was found that without any extraction treatment, only 54 % of all measurements experienced no matrix effect. After extracting unknown organic sample constituents, an increase to 74 % of measurements showing no matrix effect was recorded. Reconstituting the extracted organic sample matrix found this fraction to be a significant source of the deviated results with only 13 % experiencing no matrix effect. Results for the metals investigated are also discussed, along with correlations to water quality parameters such as turbidity, total dissolved solids, and salinity.

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“…Micelles formed from surfactant molecules act as organic solvents in liquid-liquid extraction and the analytes are partitioned between the micellar and aqueous phases [19]. In the micellar structure, there are numerous hydrophilic groupings responsible for a very efficient extraction of metallic species.…”

Section: Cloud Point Extractionmentioning

confidence: 99%

Strategies to increase selectivity of analytical methods for As, Cr and Se speciation in biological samples: A review

Carvalho¹,

Coelho²,

Coelho³

et al. 2014

Sample Preparation

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Abstract:This review provides an overview and discusses different analytical strategies that minimize or eliminate the preparation of samples for speciation of organic and inorganic species of As, Cr and Se in samples of biological interest. These metals are important for the human body and the presence of various chemical forms of metals determines its essentiality and toxicity, thus speciation comes as an important tool for the study of biological samples. However, speciation requires a reduction in the steps of sample preparation, allowing a sample investigation in its most native form in order to reduce the changes in chemical species. The strategies proposed for speciation of these metals include: solid phase extraction, point cloud extraction, suspension and direct analysis. Selected methods proposed for the speciation of organic and inorganic species of As, Cr and Se were reviewed including their main figures of merit, advantages and disadvantages.

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Review of procedures involving separation and preconcentration for the determination of cadmium using spectrometric techniques

Cited by 106 publications

References 92 publications

Trace determination of cadmium in water using anodic stripping voltammetry at a carbon paste electrode modified with coconut shell powder

Trace determination of cadmium in water using anodic stripping voltammetry at a carbon paste electrode modified with coconut shell powder

Varying matrix effects for elemental analysis identified from groundwater in the Barnett Shale

Strategies to increase selectivity of analytical methods for As, Cr and Se speciation in biological samples: A review

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