Publications by authors named "Hangchen Zhao"
In order to achieve rapid, sensitive, and high-throughput determination of typical semi-volatile organic compounds (SVOCs) in soil samples, a method for the rapid determination of 63 SVOCs in soil was developed by optimizing and improving the QuEChERS (Quick, Easy, Cheap, Effective, Rugged, and Safe) extraction technique in conjunction with gas chromatography-mass spectrometry (GC-MS) analysis. A small amount of soil sample (5.0 g) was vortexed with 10 mL of a mixture of acetone and -hexane (V/V = 1 : 1) for 2 min, followed by rapid vortex purification and centrifugation using a mixture of copper powder and octadecylsilane (C18) dispersant.
View Article and Find Full Text PDFPollutant-removal and DOM characteristics in an urban stormwater wetland.
Environ Technol
January 2023
Stormwater wetlands play a crucial role in the urban environment, providing many ecosystem services. In this work, a stormwater wetland was developed to study the effects on the removal of pollutants and the characteristics of dissolved organic matter (DOM) under different operating conditions, such as hydraulic retention time (HRT) and water depth. The results showed that the stormwater wetland exhibited excellent pollutant-removal performance, such as NHN, TN, TP, COD, and suspended solids (SS).
View Article and Find Full Text PDFArticle Synopsis
- The study analyzed the levels and sources of polycyclic aromatic hydrocarbons (PAHs) in Jiaxing's river network using GC-MS, revealing significant differences between wet and dry seasons.
- In the dry season, 10 types of PAHs were detected with higher average mass concentrations (143.83 ng/L) compared to the wet season, which had 16 types and lower concentrations (73.47 ng/L).
- Although PAH pollution is at a low level compared to other regions, certain PAHs, particularly naphthalene and phenanthrene, pose moderate ecological risks in both seasons, indicating a need for improved pollution control measures.