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

Autor(es)

Neiva, Ariane Maciel ^{[1, 2]} ; Speranca, Marco Aurelio ^[2] ; Costa, Vinicius Camara ^[2] ; Chagas Jacinto, Manuel Antonio ^[1] ; Pereira-Filho, Edenir Rodrigues ^[2]

Afiliação do(s) autor(es)

^[1] Embrapa Pecuaria Sudeste, BR-13560970 Sao Carlos, SP - Brazil

^[2] Univ Fed Sao Carlos, Dept Quim, GAIA, BR-13565905 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ENVIRONMENTAL MONITORING AND ASSESSMENT; v. 190, n. 10 OCT 2018.
• Citações Web of Science: 1

Resumo

The tanning industry is one of the largest environmental polluters due to high generation waste in all production processes, but the tanning is particularly worrisome due to the use of significant amounts of chromium. Cr is an element potentially toxic to both health and the environment, depending on the concentration and the oxidation state. Cr(VI) can come in contact with human skin when using leather goods, which can cause allergies and dermatitis, besides being carcinogenic. Considering that approximately 90% of the world production of leather is performed with Cr salts, the determination of this element in leather is necessary to avoid exposure to the risks that the element can provide. The main goal of this study was the development of an alternative analytical method for the determination of Cr in leathers (ovine and bovine leather tanned with Cr and vegetable tannin) using wavelength dispersive X-ray fluorescence (WDXRF) for direct solid analysis. Besides performing analysis of the chemical composition and determination of Al, As, Ba, Ca, Cd, Cr, Cu, Fe, Mg, Ni, Pb, Sb, Sr, Ti, and Zn in leather by inductively coupled plasma optical emission spectrometry (ICP OES). Principal component analysis (PCA) was also used in the evaluation of the WDXRF and ICP OES data sets. WDXRF calibration models for Cr presented satisfactory figures of merit and the analysis of the leathers revealed an alarming concentration of total Cr in the samples reaching 21,353 mg kg(-1). (AU)

• Processo FAPESP: 16/01513-0 - Combinação de LIBS (Laser-Induced Breakdown Spectroscopy) e ICP OES (Inductively Coupled Plasma Optical Emission Spectrometry) na análise de amostras de resíduo eletrônico (circuito eletrônico e polímeros), alimentos e líquidas de difícil preparação
• Beneficiário: Edenir Rodrigues Pereira Filho
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 11/51564-6 - Estratégias de cruzamento e de manejo para otimizar o desempenho materno e reprodutivo de ovelhas de corte, para a produção de carne e de couro ovinos de qualidade, na região sudeste
• Beneficiário: Maurício Mello de Alencar
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 15/14488-0 - Desenvolvimento de métodos analíticos para a determinação da qualidade de fertilizantes e resíduos de curtumes
• Beneficiário: Ana Rita de Araujo Nogueira
• Modalidade de apoio: Auxílio à Pesquisa - Regular