EDS result of ID7.

Nanoparticles, increasingly recognized by regulators and the public, have become potential pollutants in various media, including water. Water security, a pressing global issue, is exacerbated by industrialization, with industrial wastewater being a significant contributor to water pollution. This study collected nanoparticles from groundwater samples in residential areas surrounding the Mingzhu Industrial Park in Guangdong Province, China. To understand their characteristics as potential pollutants in wastewater and the information they provide, field emission transmission electron microscopy (TEM) was used to analyze the composition, elemental content, morphology, and crystal structure of the nanoparticles. The nanoparticles originated from three sources: factories, water pipes, and the natural environment. They aggregate and oxidize during transport, ensuring their stability in water. This study elucidates the characteristics and transport patterns of particulate pollutants in groundwater near industrial parks, a prerequisite for assessing the hazards of nano-pollutants in natural environments. Additionally, it provides valuable insights for future discussions on their ecological impacts and advancements in water detection and treatment technologies.纳米颗粒（Nanoparticles）日益受到监管机构与公众的重视，现已成为包括水体在内的各类环境介质中的潜在污染物。水安全作为一项紧迫的全球性议题，因工业化进程而愈发严峻，工业废水正是水体污染的重要诱因之一。本研究从中国广东省明珠工业园周边居民区的地下水样本中采集了纳米颗粒。为明确其作为废水潜在污染物的特性与相关信息，研究采用场发射透射电子显微镜（field emission transmission electron microscopy, TEM）对纳米颗粒的组成、元素含量、形貌及晶体结构进行了分析。本次采集的纳米颗粒共有三个来源：工厂、供水管道及自然环境。此类纳米颗粒在运移过程中会发生聚集与氧化作用，从而维持其在水体中的稳定性。本研究阐明了工业园周边地下水中颗粒污染物的特性与运移规律，这是评估自然环境中纳米污染物危害的必要前提。此外，本研究还为后续探讨纳米颗粒的生态影响以及水体检测与处理技术的研发进展提供了重要参考。