Application of Cold Vapor-Atomic Absorption (CVAAS) Spectrophotometry and Inductively Coupled Plasma-Atomic Emission Spectrometry methods for cadmium, mercury and lead analyses of fish samples. Validation of the method of CVAAS

Fernández, Zahily Herrero; Rojas, Lino Angel Valcárcel; Alvárez, A.; Álvarez, Juan Reynaldo Estevez; Santos, José Araújo dos; González, Iván Pupo; González, Maydel Rodríguez; Macías, Nancy Alberro; Sánchez, Diana López; Torres, Débora Hernández

doi:10.1016/j.foodcont.2014.05.056

Cited by 54 publications

(13 citation statements)

References 9 publications

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“…12 At present, the conventional analysis methods for Hg 2+ ions with responsive sensitivity include absorption spectrometry, inductively coupled plasma-mass spectrometry and so on. [13][14][15] However, these methods suffer from their own disadvantages, such as complicated sample treatment, and requiring trained personnel, expensive equipment and off-site analysis.…”

Section: Introductionmentioning

confidence: 99%

Poly(adenine)-mediated DNA-functionalized gold nanoparticles for sensitive detection of mercury ions in aqueous media

et al. 2019

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Section: Introductionmentioning

confidence: 99%

Poly(adenine)-mediated DNA-functionalized gold nanoparticles for sensitive detection of mercury ions in aqueous media

et al. 2019

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“…The main performance parameters such as selectivity, working and linear ranges, LoD and LoQ, precision, accuracy, and measurement uncertainty were evaluated for validation of the method for determination of Cd and Pb in zeolite samples [33][34][35]. The targets imposed for these parameters considered the quality standards for analytical methods provided by Commission of the European Communities in Regulation No.…”

Section: Performance Parametersmentioning

confidence: 99%

Development and Validation of a Spectrometric Method for Cd and Pb Determination in Zeolites and Safety Evaluation

Șenilă

Cadar

Miu³

2020

Molecules

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An analytical method based on microwave-assisted acid digestion and atomic absorption spectrometry with graphite furnace as atomization source was developed and validated for determining trace elements (Cd and Pb) in zeolites used as dietary supplements, for their characterization and safety evaluation. The method was checked for the main performance parameters according to the legislation requirements in the field of dietary supplements. In all cases, the obtained performance parameters were satisfactory. The selectivity study showed no significant non-spectral matrix effect. The linearity study was conducted for the calibration curves in the range of 0–10 ng mL−1 for Cd and 0–30 ng mL−1 for Pb. The obtained limits of detection (LoDs) and the limits of quantification (LoQs) were sufficiently low in order to allow Pb and Cd determination in dietary supplements. For the internal quality control, certified reference materials were analysed and good recoveries were obtained. The precision study was performed in terms of repeatability and reproducibility, considering the requirements imposed by the Commission Decision (2007/333/EC) and the method fulfilled these performance parameters. Expanded measurement uncertainties were estimated to 11% for Cd and 10% for Pb. Cd and Pb content were measured in real zeolite samples and, using these data, a safety evaluation was carried out.

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“…Traditional techniques for Hg 2+ quantification rely mainly on instrumental analytical techniques, such as atomic absorption/emission spectroscopy, cold vapor atomic absorption spectroscopy, gas chromatography, and inductively coupled plasma mass spectroscopy (ICP‐MS) . These methods, however, have either limitation with respect to complicated sample preparation, expensive instrumentation, highly trained personnel, and tedious maintenance.…”

Section: Introductionmentioning

confidence: 99%

Colorimetric Detection of Hg²⁺ Based on the Growth of Aptamer‐Coated AuNPs: The Effect of Prolonging Aptamer Strands

Tan

Chen

Zhang

et al. 2017

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Herein, a versatile and sensitive colorimetric sensor for Hg based on aptamer-target specific binding and target-mediated growth of AuNPs is reported. The 15 T bases are first designed to detect Hg through T-Hg -T coordination. Aptamer-target binding results in the desorption of the aptamer from AuNP surface, the remaining aptamers adsorbed on AuNP surface trigger the growth of AuNPs with morphologically varied nanostructures, and then different colored solutions are formed. On this occasion, the limit of detection (LOD) of 9.6 × 10 m is obtained. The other two aptamer strands (25- and 59-mer) are designed by increasing A bases on either side and both sides of 15 T, respectively. The interaction of the binding domain and Hg makes desorption of 15 T from AuNP surface, whereas excess bases not committed to the binding domain still adsorbed on AuNP surface. These excess bases control the growth of AuNPs, and enhance the sensitivity. The LODs are 4.05 and 3 × 10 m for 25- and 59-mer aptamers, respectively. In addition, the 59-mer aptamer system is applied to identify Hg in real river samples, the LOD of 6.2 × 10 m is obtained.

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Application of Cold Vapor-Atomic Absorption (CVAAS) Spectrophotometry and Inductively Coupled Plasma-Atomic Emission Spectrometry methods for cadmium, mercury and lead analyses of fish samples. Validation of the method of CVAAS

Cited by 54 publications

References 9 publications

Poly(adenine)-mediated DNA-functionalized gold nanoparticles for sensitive detection of mercury ions in aqueous media

Poly(adenine)-mediated DNA-functionalized gold nanoparticles for sensitive detection of mercury ions in aqueous media

Development and Validation of a Spectrometric Method for Cd and Pb Determination in Zeolites and Safety Evaluation

Colorimetric Detection of Hg²⁺ Based on the Growth of Aptamer‐Coated AuNPs: The Effect of Prolonging Aptamer Strands

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Application of Cold Vapor-Atomic Absorption (CVAAS) Spectrophotometry and Inductively Coupled Plasma-Atomic Emission Spectrometry methods for cadmium, mercury and lead analyses of fish samples. Validation of the method of CVAAS

Cited by 54 publications

References 9 publications

Poly(adenine)-mediated DNA-functionalized gold nanoparticles for sensitive detection of mercury ions in aqueous media

Poly(adenine)-mediated DNA-functionalized gold nanoparticles for sensitive detection of mercury ions in aqueous media

Development and Validation of a Spectrometric Method for Cd and Pb Determination in Zeolites and Safety Evaluation

Colorimetric Detection of Hg2+ Based on the Growth of Aptamer‐Coated AuNPs: The Effect of Prolonging Aptamer Strands

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Product

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Colorimetric Detection of Hg²⁺ Based on the Growth of Aptamer‐Coated AuNPs: The Effect of Prolonging Aptamer Strands