Publications by authors named "Xiao-Na Zhao"

Phenolic compounds usually produce coupling phenols during the upstream oxidation treatment of water, but the disinfection by-products (DBPs) of coupling phenols in the subsequent disinfection process have been overlooked. Herein, we demonstrated the generation and higher toxicity of these DBPs. In Songhua River water, 0.

View Article and Find Full Text PDF

In this study, vacuum ultraviolet (VUV) was first proposed to activate ferrate (Fe(VI)) for degrading micropollutants (e.g., carbamazepine (CBZ)).

View Article and Find Full Text PDF
Article Synopsis
  • Scientists have found that a common method for measuring a chemical called Fe(VI) can be messed up by other substances, making it hard to get accurate results.
  • When certain organic compounds are present, they can interfere with the tests, causing big errors in measurements.
  • A new method using Mn(II) and a different chemical called TMB helps to make measurements of Fe(VI) more accurate and faster, even in tricky conditions like dirty water.
View Article and Find Full Text PDF

The secondary metabolites of marine fungi with rich chemical diversity and biological activity are an important and exciting target for natural product research. This study aimed to investigate the fungal community in Quanzhou Bay, Fujian, and identified 28 strains of marine fungi. A total of 28 strains of marine fungi were screened for small-scale fermentation by the OSMAC (One Strain-Many Compounds) strategy, and 77 EtOAc crude extracts were obtained and assayed for cancer cell inhibition rate.

View Article and Find Full Text PDF
Article Synopsis
  • Manganese ion (Mn(II)) in natural waters enhances the oxidation of various compounds like bisphenol A (BPA) when combined with iron species (Fe(VI)), achieving higher oxidation rates compared to using Fe(VI) alone.
  • At specific molar ratios of Mn(II) to Fe(VI), different reactive species of iron and manganese play distinct roles in the oxidation process, particularly increasing the effectiveness of BPA degradation.
  • Further analysis showed that as the ratio of Mn(II) to Fe(VI) increased, the contribution of reactive manganese species (Mn(VII) and Mn(III)) to the oxidation of BPA became more significant, indicating a shift in the oxidation mechanism.
View Article and Find Full Text PDF
Article Synopsis
  • The study examines how ferrate self-decomposition affects the oxidation of methyl phenyl sulfoxide (PMSO), focusing on intermediate iron species (Fe(V)/Fe(IV)) at pH 7.0.
  • Results indicate that increasing ferrate dosage enhances the reaction rate with PMSO, but this effect is reduced when PMSO is in excess or when a strong complexing ligand is present, showing the significance of Fe(V) from ferrate decomposition in PMSO oxidation.
  • A mechanistic model reveals that up to 99% of PMSO oxidation comes from Fe(V) generated by ferrate self-decomposition, highlighting its role in activating the process and demonstrating similar effects in the oxidation of
View Article and Find Full Text PDF

In the title compound, [Co(CHO)(CHN)] , the divalent Co atom is six-coordinated to three N atoms from two symmetrical 5-(pyridin-4-yl)-1,2'-3,3'-bi[1,2,4-triazole] (Hpyttz) ligands and three O atoms from three symmetrical 3-carb-oxy-benzoate (Hbdic) ligands, leading to a distorted {CoNO} octa-hedral coordination environment. Two Co cations are linked by four bridging carboxyl-ate groups to generate a dinuclear [Co(CO)] unit. The dinuclear units are further connected into a chain along [010] the Hbdic ligands.

View Article and Find Full Text PDF
Article Synopsis
  • The compound [Co(CHNOP)(CHN)]·CHN features a cobalt cation coordinated by a chelating ligand and two 1-benzo[1,2,3]triazole molecules, creating a slightly distorted octahedral structure.
  • The crystal structure is stabilized by classical hydrogen bonds (O-H⋯O and N-H⋯O) and weak C-H⋯N interactions, resulting in a three-dimensional network.
  • Additionally, π-π stacking interactions occur between the triazole and benzene rings, enhancing the overall stability of the crystalline arrangement.
View Article and Find Full Text PDF

In order to explore the relationship between the taxonomic diversity of plant communities' and environmental factors in Pangquangou Nature Reserve, Shanxi Province, 33 stands of the plant communities and environmental information were investigated, respectively. Moreover, the taxonomic variability index (delta+) and the average taxonomic differences index (delta+) of the communities were analyzed as well as the relationships between delta+ and delta+ with environmental factors were discussed. The results showed that the average values of delta+ and delta+ were 270 and 76.

View Article and Find Full Text PDF

This study aims to investigate the oxidative stress and hepatocellular injury induced by Cr(3+) in chicken. Different doses of CrCl3 solutions (50% LD50 , 25% LD50 , and 12.5% LD50) and equivalent water were orally administered to chicken.

View Article and Find Full Text PDF

Objective: To optimize the preparation conditions of Epimedium polysaccharide liposome (EPSL).

Methods: EPSL was prepared by membrane distribution-supersound method. In preparation of EPSL test, an orthogonal L9 (3(4)) test was used to optimize the preparation conditions, with four factors of ratio of drug to lipid, ratio of lecithin to cholesterol, ultrasonic time and water bath temperature and two indexes of encapsulation efficiency and drug-loading rate.

View Article and Find Full Text PDF