Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.2166/aqua.2023.278 |
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| Title (Primary) | How suitable is the gold-labelling method for the quantification of nanoplastics in natural water? |
| Author | Pirade, F.; Lompe, K.M.; Jiménez-Lamana, J.; Bandyopadhyay, S.; Zürbes, K.; Bali, N.; Materić, D.; Foppen, J.W. |
| Source Titel | AQUA - Water Infrastructure, Ecosystems and Society |
| Year | 2023 |
| Department | ANA |
| Volume | 72 |
| Issue | 12 |
| Page From | 2347 |
| Page To | 2357 |
| Language | englisch |
| Topic | T9 Healthy Planet |
| Supplements | Supplement 1 |
| Keywords | ICP-MS; metal labelling; nanoplastics quantification; NOM interference |
| Abstract | 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. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=28424 |
| Pirade, F., Lompe, K.M., Jiménez-Lamana, J., Bandyopadhyay, S., Zürbes, K., Bali, N., Materić, D., Foppen, J.W. (2023): How suitable is the gold-labelling method for the quantification of nanoplastics in natural water? AQUA 72 (12), 2347 - 2357 10.2166/aqua.2023.278 |
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