Leibniz Institute for Baltic Sea Research Warnemünde (IOW), Rostock, 18119, Germany.
Lanxess Deutschland GmbH, Dormagen, 41538, Germany.
Sci Rep. 2019 Feb 14;9(1):2120. doi: 10.1038/s41598-019-38685-6.
Plastic degradation rates in the marine environment are essential to understand. This study demonstrates that in plastic-microbial interaction experiments, residual monomeric and oligomeric content of PA6 significantly influences the development of dissolved organic carbon. While it is well recognized that additives in plastics should be considered during the inception of plastic-exposure experiments, residual monomers have yet to be prominently considered in the same light. As such, in degradation studies where residual contents of monomers and/or oligomers are not considered, degradation of synthetic polymers could be significantly overestimated. The substantial conversion of these monomeric and oligomeric leachates also has implications for plastic-biofilm development studies and microplastic-biota-based ingestion experiments.
了解塑料在海洋环境中的降解速率至关重要。本研究表明，在塑料-微生物相互作用实验中，PA6 的残留单体和低聚物含量显著影响溶解有机碳的产生。虽然人们已经认识到在进行塑料暴露实验时应该考虑塑料中的添加剂，但残留单体尚未得到同样的重视。因此，在降解研究中，如果不考虑单体和/或低聚物的残留含量，合成聚合物的降解可能会被严重高估。这些单体和低聚物浸出物的大量转化也对塑料-生物膜发展研究和基于微塑料-生物群的摄食实验产生影响。
