Determination of toxic metals in leather by wavelength dispersive X-ray fluorescence (WDXRF) and inductively coupled plasma optical emission spectrometry (ICP OES) with emphasis on chromium

Neiva, Ariane Maciel; Sperança, Marco Aurélio; Costa, Vinícius Câmara; Jacinto, M. A. C.; Pereira-Filho, Edenir Rodrigues

doi:10.1007/s10661-018-6990-y

Cited by 10 publications

(9 citation statements)

References 41 publications

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“…1.2.4 Other components. Inorganic compounds and elements can become part of the nal composition of leather due to natural bioprocesses, 29 or because they become ingrained during leather manufacture 30 or aer burial in soil. 31,32 This paper explores the relationship between leather structural composition and burial environment using FTIR-ATR.…”

Section: Ftir and Leathermentioning

confidence: 99%

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Rapid deterioration in buried leather: archaeological implications

H. H.,

R.,

E. M.

et al. 2024

RSC Adv.

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Section: Ftir and Leathermentioning

confidence: 99%

“…Inorganic compounds and elements can become part of the final composition of leather due to natural bioprocesses, 29 or because they become ingrained during leather manufacture 30 or after burial in soil. 31,32…”

Section: Introductionmentioning

confidence: 99%

Rapid deterioration in buried leather: archaeological implications

H. H.,

R.,

E. M.

et al. 2024

RSC Adv.

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“…Normalmente, o primeiro passo para interpretação dos dados LIBS para um grande conjunto de amostras é a aplicação da PCA. [94][95][96][97][98][99][100] Outra abordagem quimiométrica muito empregada em análise por LIBS é o uso da calibração multivariada. Dentre as principais ferramentas de calibração multivariada aplicadas estão a partial least squares (PLS), 101 multiple linear regression (MLR), 65 artificial neural networks (ANN) 102 entre outras.…”

Section: Libs E Quimiometriaunclassified

Laser Induced-Breakdown Spectroscopy (Libs): Histórico, Fundamentos, Aplicações E Potencialidades

Costa¹,

Augusto²,

Castro³

et al. 2019

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This review attempts to present a broad view of the technique laser-induced breakdown spectroscopy (LIBS), since its origin, fundamentals, sample preparation strategies, use of chemometric tools for data processing, the advantages and limitations with regard to qualitative and quantitative analysis, aplications and future trends as an analytical technique that is in consolidation in analytical chemistry. LIBS is a rapid and versatile, which is able of providing qualitative and quantitative analytical information for practically any sample, in a virtually non-destructive way, without any substantial sample preparation. The instrumentation is simple, robust, compact, and enables remote analysis. The advancement of the LIBS applications in the areas of agriculture, environmental, food, biological/pharmaceutical, forensic, metallurgy and electronic waste were discussed in detail in this review. We consider that this review will be an important tool concerning dissemination of the LIBS, mainly for audience of undergraduate courses, and disciplines related to instrumental analysis.

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“…Normally, leather tanning involves the use of Cr(III). However, there have been many reports that Cr(VI) has been abnormally detected in some leather samples, but this has been widely debated 16 . In time, the chemicals used in production and other environmental factors, such as heat and light, may cause changes and deformations in leather products, e.g., oxidation of Cr(III) to Cr(VI), a decrease in shrinkage temperature, fading or yellowing color, a loss of physical resistance, and odor problems due to oxidation of fat liquors or formaldehyde release.…”

Section: Table 3 Determination Of Total Cr By Icp Oes and Cr(vi) In mentioning

confidence: 99%

Chromium speciation in leather samples: an experiment using digital images, mobile phone and environmental concepts

Costa¹,

Neiva²,

Pereira-Filho

2019

Eclet. Quim. J.

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This study proposes a new and simple method for Cr speciation and Cr(VI) determination in leather samples using digital images. The experiments were performed using a mobile phone and a free app called PhotoMetrix that was used to obtain and process data. The results obtained from PhotoMetrix were compared to reference methods using UV−Vis spectroscopy. A statistical evaluation between both proposed and the reference methods using two-sample t-test did not show a significant difference at a 95% confidence level. Bovine leather samples (4 samples) tanned with Cr salts and ovine leather samples (3 samples) tanned with vegetable tannin were analyzed. The proposed method presented limits of detection (LOD) and quantification (LOQ) of 0.6 and 2 mg/kg, respectively. In addition, the proposed method using PhotoMetrix and digital images can provide undergraduate students an opportunity to learn topics such as quantitative analyses, environmental chemistry, speciation chemistry, image processing and treatment of statistical data. The results demonstrated that the proposed method can be applied to routine analyses and in experimental analytical chemistry courses.

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Determination of toxic metals in leather by wavelength dispersive X-ray fluorescence (WDXRF) and inductively coupled plasma optical emission spectrometry (ICP OES) with emphasis on chromium

Cited by 10 publications

References 41 publications

Rapid deterioration in buried leather: archaeological implications

Rapid deterioration in buried leather: archaeological implications

Laser Induced-Breakdown Spectroscopy (Libs): Histórico, Fundamentos, Aplicações E Potencialidades

Chromium speciation in leather samples: an experiment using digital images, mobile phone and environmental concepts

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