Academic Journal
How suitable is the gold-labelling method for the quantification of nanoplastics in natural water?
| العنوان: | How suitable is the gold-labelling method for the quantification of nanoplastics in natural water? |
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| المؤلفون: | Pirade, F., Lompe, K. M., Jiménez-Lamana, J., Bandyopadhyay, S., Zürbes, K., Bali, N., Materić, D., Foppen, J. W. |
| المصدر: | Aqua Water Infrastructure, Ecosystems and Society ; 72 ; 12 |
| بيانات النشر: | IWA; |
| سنة النشر: | 2023 |
| المجموعة: | UNESCO-IHE Institute for Water Education: Water Management Publications |
| مصطلحات موضوعية: | microplastics, tracers, gold-labelling, pollution, water quality |
| الوصف: | Nanoplastics are detected in surface water, yet accurately quantifying their particle number concentrations remains a significant challenge. In this study, we tested the applicability of a gold-labelling method to quantify nanoplastics in natural organic matter (NOM) containing water matrices. Gelatin-coated gold nanoparticles (Au-gel NPs) form conjugates with nanoplastics via electrostatic interaction which produces peak signals which can be translated into particle number concentration using single-particle inductively coupled plasma–mass spectrometry (SP-ICP-MS). We used water samples with various NOM concentrations, with and without the addition of 1 × 107 particle–1 nanoplastics. Our results indicate that nanoplastics in low NOM samples (<1 mg·C L−1) could be successfully quantified. However, in high NOM samples (>15 mg·C L−1), only 13–19% of added nanoplastics were successfully quantified. Further digestion to remove NOM yielded only 10% of spiked nanoplastics. This discrepancy in high NOM samples could likely be attributed to the competition between nanoplastics and NOM existing in the water sample to bind with Au-gel NPs. Our study highlights the suitability of the Au-gel labelling method for quantifying nanoplastics in low NOM water samples. Nevertheless, further optimization, including pre-digestion steps, is essential to apply this method for high NOM water samples effectively. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| Relation: | http://cdm21063.contentdm.oclc.org/cdm/ref/collection/p21063coll3/id/19959 |
| DOI: | 10.2166/aqua.2023.278 |
| الاتاحة: | https://doi.org/10.2166/aqua.2023.278 http://cdm21063.contentdm.oclc.org/cdm/ref/collection/p21063coll3/id/19959 |
| Rights: | CC BY 4.0 https://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: | edsbas.3DA67E18 |
| قاعدة البيانات: | BASE |
| DOI: | 10.2166/aqua.2023.278 |
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