相关实验视频

Updated: Jun 29, 2026

Protocol for Microplastics Sampling on the Sea Surface and Sample Analysis

Protocol for Microplastics Sampling on the Sea Surface and Sample Analysis

Published on: December 16, 2016

在植物组织中追踪微塑料及其相关化学添加剂:一种热解GC-MS方法来识别,定量和转移机制

Sarah A Alotaibi¹, Gaddi B Eshun¹, Omowunmi A Sadik¹

¹Department of Chemistry and Environmental Science, New Jersey Institute of Technology, University Heights, 161 Warren Street, Tiernan Hall, Newark, New Jersey 07102, United States.

|March 9, 2026

概括

这项研究提出了一种新方法来检测和量化微塑料 (MPs) 和它们的添加剂在玄米植物. 开发的技术准确地测量了聚乙烯MPs,提供了关于它们在食用植物中的吸收和转移的见解.

科学领域:

环境科学环境科学
分析化学分析化学
植物生物学植物生物学

背景情况:

微塑料 (MP) 和它们的化学添加剂在食用植物中积累,造成重大风险.
由于污染物度和转移,在植物中量化MPs在分析上具有挑战性.
需要可靠的方法来识别植物组织中的MP和添加剂.

研究的目的:

开发和验证在玄米植物中的聚乙烯 (PS) MPs和添加剂的样品制备和量化技术.
调查MPs从根到上空植物组织的转移机制.
在复杂的植物矩阵中建立MP分析的标准化协议.

主要方法:

从玄米植物样本中提取PS MP的酸消化.
多射击热解气体染色学-质谱学 (Py-GC-MS) 用于MP和添加分析.
扫描电子显微镜 (SEM) 用于MP表征和Agilent/NIST库用于识别.

主要成果:

通过使用特征性 pyrolytic 峰值 (styrene trimer, m/z 91-312),成功检测和量化了 PS MP.
在不同玄米组织 (根,芽,叶) 中实现了低检测极限 (LOD) 和量化极限 (LOQ).
证明了高的MP恢复率 (64.8-96.0%) 与良好的方法精度 (RSD <6.9%).

结论:

开发的Py-GC-MS方法对于量化白植物中的PS MP是有效的.
从根到芽的MP转移可能是由通过度梯度的被动运输驱动的.
这项研究有助于在食用植物中进行MP分析的标准化协议.

更多相关视频

Extraction of Organochlorine Pesticides from Plastic Pellets and Plastic Type Analysis

Extraction of Organochlorine Pesticides from Plastic Pellets and Plastic Type Analysis

Published on: July 1, 2017

Sampling and Identification of Microplastics in Groundwater

Sampling and Identification of Microplastics in Groundwater

Published on: November 7, 2025

相关概念视频

Gas Chromatography–Mass Spectrometry (GC–MS)

Gas Chromatography–Mass Spectrometry (GC–MS)

Gas chromatography–mass spectrometry (GC–MS) is the combination of analytical techniques of gas chromatography and mass spectrometry in a single instrument for analyzing a mixture of compounds. The gas chromatograph separates the compounds in the mixture, and the mass spectrometer analyzes each compound separately to determine the molecular masses and molecular structures.
A gas chromatograph consists of a long, narrow capillary column with a polysiloxane coating on the inner wall. The coating...

Microbial Bioremediation of Plastics

Microbial Bioremediation of Plastics

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...