دورية أكاديمية
Zinc detection in oil-polluted marine environment by stripping voltammetry with mercury-free nanoporous gold electrode
| العنوان: | Zinc detection in oil-polluted marine environment by stripping voltammetry with mercury-free nanoporous gold electrode |
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| المؤلفون: | M.-C. Clochard, O. Oral, T. L. Wade, O. Cavani, M. Castellino, L. Medina Ligiero, T. Elan |
| المصدر: | Scientific Reports, Vol 12, Iss 1, Pp 1-11 (2022) |
| بيانات النشر: | Nature Portfolio, 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Medicine LCC:Science |
| مصطلحات موضوعية: | Medicine, Science |
| الوصف: | Abstract Detection of Zn(II) in oil-polluted seawater via square-wave anodic stripping voltammetry (SW-ASV) utilizing thin gold electrodes sputtered onto nanoporous poly(acrylic acid)-grafted-poly(vinylidene difluoride) (PAA-g-PVDF) membrane is herein reported. Prior to SW-ASV, PAA grafted nanopores demonstrated to efficiently trap Zn(II) ions at open circuit. This passive adsorption followed a Langmuir law. An affinity constant of 1.41 L $$\upmu $$ μ mol $$^{-1}$$ - 1 and a maximum Zn(II) adsorbed mass q $$_{max}$$ max of 1.21 $$\upmu $$ μ mol g $$^{-1}$$ - 1 were found. Applied SW-ASV protocol implied an accumulation step (− 1.2 V for 120 s) followed by a stripping step (− 1.2 to 1 V; 25 Hz; step: 4 mV; amplitude: 25 mV; acetate buffer (pH 5.5)). It revealed a Zn redox potential at − 0.8 V (Ag/AgCl pseudo-reference). Multiple measurements in synthetic waters close to the composition of production waters exhibited a decreasing precision with the number of readings R (1.65 $$\%$$ % (R = 2) and 6.56 $$\%$$ % (R = 3)). These membrane-electrodes should be used as disposable. The intra-batch mean precision was 14 $$\%$$ % (n = 3) while inter-batches precision was 20 $$\%$$ % (n = 15). Linear and linear-log calibrations allow exploitation of Zn(II) concentrations ranging from 10 to 500 $$\upmu $$ μ g L $$^{-1}$$ - 1 and 100 to 1000 $$\upmu $$ μ g L $$^{-1}$$ - 1 respectively. The LOD was 4.2 $$\upmu $$ μ g L $$^{-1}$$ - 1 (3S/N). Thanks to obtained calibration, a detected Zn(II) content of 1 ppm in a raw production water from North Sea oil platform was determined. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2045-2322 |
| Relation: | https://doaj.org/toc/2045-2322 |
| DOI: | 10.1038/s41598-022-20067-0 |
| URL الوصول: | https://doaj.org/article/05deb9f7cc9d4bbfb011f693ccab0cdf |
| رقم الأكسشن: | edsdoj.05deb9f7cc9d4bbfb011f693ccab0cdf |
| قاعدة البيانات: | Directory of Open Access Journals |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 20452322 |
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| DOI: | 10.1038/s41598-022-20067-0 |