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Your search keyword '"Squissato, André L."' showing total 24 results
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24 results on '"Squissato, André L."'

10. Contributors

Author

Barros, Maria Teresa, primary, Cardoso, Rafael M., additional, Carrier, Andrew James, additional, Crucho, Carina I.C., additional, Deák, Andrea, additional, Ebralidze, Iraklii I., additional, Faccio, Greta, additional, Gaspari, Franco, additional, Haick, Hossam, additional, Huynh, Tan-Phat, additional, Iatsunskyi, Igor, additional, Laschuk, Nadia O., additional, MacQuarrie, Stephanie, additional, Mugo, Samuel M., additional, Munoz, Rodrigo A.A., additional, Poisson, Jade, additional, Quaranta, Simone, additional, Rocha, Diego P., additional, Squissato, André L., additional, Tormin, Thiago F., additional, Viter, Roman, additional, Zenkina, Olena V., additional, and Zhang, Qiang, additional

Published
2019
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12. DETERMINATION OF TOTAL AND BIOACCESSIBLE ELEMENTS IN TEMPORARY ADHESIVE TATTOOS USED BY CHILDREN AND ADULTS

Author

Squissato, André L., Claro, Augusto T. S. del, Lourenço, Riad D., Fioroto, Alexandre M., Nascimento, Angerson N., and Muñoz, Rodrigo A. A.

Subjects
ICP-MS, toys, temporary adhesive tattoos, heavy metal, bioaccessibility
Abstract

The presence of bioaccessible potentially-toxic elements in five different brands of temporary tattoos (packaged with bubble gums) aimed at children and three product brands used by young and adult audiences were analyzed in accordance with the Brazilian Organization of Technical Standards (ABNT) and International Organization for Standardization (ISO) for toy’s safety standards. Bioaccessible barium, copper and strontium were found in the concentration range between 1.78-11.1 μg g-1, 0.0364-0.875 μg g-1, 0.155-9.9 μg g-1, respectively. Bioaccessible lead (2.6 ± 0.1 μg g-1 - 4.36 ± 0.06 μg g-1) and boron (2.14 ± 0.07 - 3.54 ± 0.07 μg g-1) were found in two samples whereas chromium (0.403 ± 0.004 μg g-1) in one sample aimed at children. Bioaccessible aluminum was found in six samples, mostly at products used by children. Other elements whose bioaccessibility was evaluated were Mo (< LOD), Cd (< LOD), V (0.148 ± 0.003 μg g-1) and Co (0.003 - 1.756 μg g-1). All samples met the upper limits permitted by the national toy safety standard, however, chromium, lead, cobalt and barium presented higher bioaccessibility levels than the allowed values by cosmetic regulation that controls products applied directly to the skin.

Published
2022

24. Stripping Voltammetric Determination of Mercury in Fish Oil Capsules Using a Screen‐printed Gold Electrode.

Author

Squissato, André L., Rocha, Diego P., Almeida, Eduardo S., Richter, Eduardo M., and Munoz, Rodrigo A. A.

Subjects
*MERCURY electrodes, *VOLTAMMETRY, *FISH oils, *GOLD electrodes, *TEMPERATURE effect, *OXIDATION
Abstract

Abstract: This work presents a simple electrochemical method for Hg determination in fish oil capsules using anodic stripping voltammetry (ASV) on a screen‐printed gold electrode (SPGE). Samples were treated in an ultrasonic bath for 15 min in the presence of a 1 : 1 (v/v) concentrated HCl/H2O2 mixture at room temperature. The limit of detection (LOD) was estimated as 0.25 μg L−1 (corresponding to 7.6 μg kg−1 of oil) with a linear range between 5 and 400 μg L−1 (90 s of deposition time). The analyzed fish oil samples presented Hg concentration below the LOD value. Recovery values for samples spiked with oil standard containing Hg ranged from 95 to 105 %. The method is precise (inter‐day and intra‐day RSD<4 % for n=3) as well as the SPGE sensors (RSD=4.3 %, n=3), which were used continuously (around 100 analyses without replacement) under such oxidation media. The proposed method is feasible to be applied for on‐site determinations due to the portability of sensing and sample treatment approaches. [ABSTRACT FROM AUTHOR]

Published
2018
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