一种从包括生物固体,堆肥和土壤在内的固体生物废物中提取微塑料的方法,通过μ-FTIR进行分析
Helena Ruffell1, Olga Pantos2, Brett Robinson1
1School of Physical and Chemical Sciences, University of Canterbury, Christchurch, New Zealand.
MethodsX
|June 7, 2024
概括
一种新方法有效地从生物废物 (如堆肥和土壤) 中提取微塑料. 这种技术确保了微塑料分析的高回收率,使用微里埃变换红外光谱法 (μ-FTIR).
科学领域:
- 环境科学 环境科学
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
背景情况:
- 从复杂的有机基质中提取微塑料的方法有限.
- 准确量化生物废物中微塑料的含量对于环境风险评估至关重要.
研究的目的:
- 开发和验证一种从固体生物废物中提取微塑料的方法.
- 为了使微塑料的光谱分析使用微里叶变换红外光谱学 (μ-FTIR).
主要方法:
- 固体生物废物经过了用铁 (II) 和过氧化进行湿过氧化 (WPO) 的消化.
- 使用超纯水和化 (NaI) 溶液在沉积物-微塑料隔离 (SMI) 装置中进行了序列密度分离.
- 该方法避免了磨削等破坏性过程,以保持微塑料的完整性.
主要成果:
- 微塑料的平均回收率为堆肥的92%,生物固体的95%,土壤的98%.
- 在WPO消化过程中,生物废物聚合物被有效地分解,释放被捕获的微塑料.
- 在SMI单元中的密度分离有助于有效地隔离微塑料.
结论:
- 开发的方法从各种固体生物废物中提供了高微塑料回收.
- 最少的加工步骤减少了提取过程中的污染和颗粒损失.
- 这种经过验证的方法适用于环境样本中的微塑料分析.
相关概念视频
01:27Bioplastics
67
Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
67
01:28Microbial Bioremediation of Plastics
123
Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...
123