In-House Validation of Methyltestosterone Determination in Natural Waters by Voltammetry Using Hanging Mercury Drop Electrode

Miranda, Luciane; Felsner, Maria Lurdes; Torres, Yohandra Reyes; Hoss, Ivonete; Galli, Andressa; Quináia, Sueli Pércio

doi:10.5935/0100-4042.20150014

Cited by 2 publications

(1 citation statement)

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“…For the accuracy tests of this work the calculated recovery percentage is expected to be within the range of 70 to 110% stipulated by the AOAC (Association of Official Analytical Chemistry) 28 . The representations of recovery percentages calculated at low (0.001 mg.L -1 ), mean (0.004 mg.L -1 ) and high (0.007 mg.L -1 ) concentration presented a satisfactory recovery percentage, once which fit within expected range (Table 6 and 7).…”

Section: Validation Of Voltammetric Methodologymentioning

confidence: 95%

Determination of Copper and Iron in Real Sample of Water and Ethanol Using Square Wave Voltammetry with a Micro/Nano Boron-Doped Diamond Electrode

2022

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Currently, the search for a more economical alternative with adequate selectivity, sensitivity and reproducibility in the determination of metallic ions is important for the development of reliable methodologies for the determination of these contaminants. This work investigates a boron-doped micro/nano diamond electrode, with different morphology and structure compared to those discussed in the literature, for the detection of copper and iron in aqueous and ethanolic environments. Internal validation of the Square Wave Voltammetry was applied. The methodology was submitted to validation by: selectivity, linearity, precision (interday test), accuracy (percentage of recovery) and detection and quantification limits. The results indicated that this type of electrode showed good response to determinations in aqueous and ethanolic environments, with good selectivity, linearity, accuracy (recovery between 70% and 110%) and precision, presenting the best detection and quantification limits for the aqueous. The methodology using a boron-doped diamond micro/nano electrode was suitable for the determination of copper and iron metals in both matrices.

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Section: Validation Of Voltammetric Methodologymentioning

confidence: 95%