Publications by authors named "Niannian Cao"

Article Synopsis
  • Carbofuran, a common insecticide, contaminates water sources, but a new high-performance adsorbent made from biochar (WAB4) can significantly remove it, achieving an adsorption capacity of 113.7 mg/g.
  • The adsorption process follows established models, indicating effective binding, while studies on rats show that the biochar-carbofuran complex is less toxic than carbofuran alone, causing less harm to vital organs.
  • Additionally, when biochar is present, the concentration and bioavailability of carbofuran are reduced by 64% and 68%, making biochar a promising, eco-friendly solution for cleaning water contaminated by this pesticide.
View Article and Find Full Text PDF

A widely applied pesticide of azoxystrobin, is increasingly detected in the water environment. Concern has been raised against its potential detriment to aquatic ecosystems. It has been shown that exposure to azoxystrobin interfere with the locomotor behavior of zebrafish larvae.

View Article and Find Full Text PDF

Soman has been shown to be highly neurotoxic and can be easily degraded to produce pinacolyl methylphosphonate acid (PMPA). Thus, the perniciousness of PMPA deserved serious attention after soman was exposed to the environment. However, the toxicity of PMPA was not clearly elucidated to date.

View Article and Find Full Text PDF
Article Synopsis
  • Biochar materials are effective for pollutant adsorption, and this study focuses on a specially prepared porous biochar (AC) that adsorbs neonicotinoids, a type of pesticide.
  • The adsorption process is spontaneous and involves electrostatic and hydrophobic interactions, achieving a high capacity of 227.8 mg/g for acetamiprid.
  • AC was found to reduce the toxicity of neonicotinoids to aquatic organisms (D. magna) by lowering the bioavailability of acetamiprid and enhancing detoxification processes, highlighting both its safety and potential for environmental remediation.
View Article and Find Full Text PDF

Tricyclazole, propiconazole, imidacloprid, and thiamethoxam are commonly used pesticides in paddy fields. It is necessary and practical to remove pesticides from the water environment because the low utilization rate of pesticides will produce residues in the water environment. It is known that there are few studies on the preparation of biochar adsorption pesticides by the walnut shell and few studies on the removal of tricyclazole and propiconazole.

View Article and Find Full Text PDF

Azoxystrobin, a strobilurin widely used to control rice diseases, has raised concerns about possible adverse effects on aquatic ecosystems. At present, very little is known about the effects of azoxystrobin on courtship and aggressive behavior and the potential underlying mechanisms. In the present study, after exposing adult male and female zebrafish to worst-case scenario concentrations of azoxystrobin (0, 2 μg/L, 20 μg/L, and 200 μg/L) for 42 d, we observed a decrease in courtship behavior and an increase in aggressive behavior in both male and female zebrafish.

View Article and Find Full Text PDF

Given the inevitable exposure of Eriocheir sinensis (E. sinensis) to fungicides in rice-crab co-culture systems, understanding the potential effect of fungisides is important for practical application. Molting is a crucial development process of E.

View Article and Find Full Text PDF

Rice crab co-culture is a new integrated farming model in China. The application of triazole plant growth regulators (PRGs) is often used as an advantageous option to combat rice lodging. However, there is still a gap regarding the toxicity of these PRGs on the growth and development of the Chinese mitten crab (Eriocheir sinensis, E.

View Article and Find Full Text PDF

Tricyclazole is used as a common fungicide to control rice blast. However, studies on the toxicity of tricyclazole to crabs in the rice-crab co-culture system are still extremely rare. Here, the environmental dissipation of tricyclazole was monitored in this model, and the potential toxicity of tricyclazole to E.

View Article and Find Full Text PDF

The typical tire manufacturing additive 6PPD, its metabolites 6PPDQ and 4-Hydroxy should be monitored because of their ubiquitous presence in the environment and the high toxicity of 6PPDQ to coho salmon. The toxic effect of 6PPD and its metabolites have been revealed superficially, especially on behavioral characteristics. However, the behavioral indicators explored so far are relatively simple and the toxic causes are poorly understood.

View Article and Find Full Text PDF