Preparation of a New Active Component 1,10-B10H8(S(C18H37)2)2 for Potentiometric Membranes for the Determination of Terbinafine Hydrochloride DOI Creative Commons
Е. С. Турышев, А. V. Golubev, A. Yu. Bykov

et al.

Inorganics, Journal Year: 2025, Volume and Issue: 13(2), P. 35 - 35

Published: Jan. 24, 2025

This paper presents a methodology for the preparation of new active component ion-selective membranes, based on di-substituted sulfonium derivative closo-decaborate anion at apical vertices with octadecylalkyl substituents 1,10-B10H8(S(C18H37)2)2. approach is characterized by physicochemical methods analysis (11B, 1H, 13C NMR spectroscopy, IR spectroscopy and elemental analysis). The compound obtained used as an PVC membrane selective to terbinafine hydrochloride. sensor developed highly drug be detected, has linearity range 4.0 × 10−8–1.0 10−2 detection limit 1.0 10−8, can detect hydrochloride in pH 3 6.

Language: Английский

The Utilization of Dissolved Organic Matter Spectral and Molecular Properties in Freshwater Eutrophication Studies: A Mini Review DOI Open Access

Yan Wen-gang,

Jun Xing,

Chunzhao Chen

et al.

Water, Journal Year: 2025, Volume and Issue: 17(2), P. 151 - 151

Published: Jan. 8, 2025

Eutrophication is a major environmental issue affecting freshwater ecosystems worldwide. While its impact on the composition of dissolved organic matter (DOM) well recognized, relationships between DOM’s optical and molecular properties across eutrophication gradients remain underexplored. This review synthesizes recent research (derived from UV-Vis absorption fluorescence spectroscopy) characteristics (analyzed using Fourier-transform ion cyclotron resonance mass spectrometry, FT-ICR MS) in systems varying trophic states. Generalized additive model (GAM) analysis was used to assess correlations state index (TSI). The carbon (DOC), a254, SUVA254, SR, HIX, BIX, FI averaged 11.44 ± 11.97 mg/L, 23.23 16.95 m−1. 2.98 0.99 L·mg−1·m−1, 1.42 0.38, 2.38 1.31, 1.08 0.16, 2.11 0.44, respectively, mesotrophic middle-eutrophic sites. GAM results revealed significant linear correlation DOC properties, including FI, with TSI, suggesting that DOM accumulation intensifies eutrophication. such as O/C H/C ratios, double bond equivalents (DBEs), CHOS% content, exhibited nonlinear TSI. These trends imply shift sources terrestrial macrophyte-derived inputs those dominated by algal- sediment-derived progresses. We concluded indices alone may not serve reliable indicator states; future studies should focus integrating both offer more comprehensive assessment Given limited number variables examined this study, work only offers preliminary investigation into relationship changes More systematic focusing molecular-level analyses states broader geographic scale are needed.

Language: Английский

Citations

0
Driving Factors and Variability of Cyanobacterial Blooms in Qionghai Lake, Yunnan–Guizhou Plateau, China DOI Open Access

Yanzhen Dong,

Zebin Tian,

Xiaoyan Li

et al.

Water, Journal Year: 2025, Volume and Issue: 17(2), P. 169 - 169

Published: Jan. 10, 2025

Qionghai Lake is an important freshwater source in the Yunnan–Guizhou Plateau. However, cyanobacterial blooms have been observed recently Lake, but their formation mechanism and control management are not well understood. Herein, phytoplankton, zooplankton, eutrophication, nutrients, biochemical indices were measured from May 2022 to April 2023. The results showed that predominated Anabaena sp. with a density of 1.11 × 107–18.87 107 cells/L. started northwestern area November then expanded entire lake until it peaked subsided February Protozoa dominated zooplankton while having no significant relationship Lake. trophic level index chlorophyll similar spatiotemporal trends density, water quality northwest was worse than other parts. Total nitrogen (TN) total phosphorus (TP) 0.41–0.54 0.021–0.045 mg/L TN TP positively correlated most environmental factor affecting bloom These findings might provide essential information for improving remediation

Language: Английский

Citations

0
Evolution patterns, driving mechanisms, and ecological indicative effects of 730 lakes water color in the Yangtze River Basin (1984–2023) DOI
Qi Chen, Zhijing Li,

Zhongwu Jin

et al.

Journal of Hydrology, Journal Year: 2025, Volume and Issue: unknown, P. 132695 - 132695

Published: Jan. 1, 2025

Language: Английский

Citations

0
Effect of nutrient enrichment and climate change on historical changes of the cyanobacterial community in a shallow north temperate lake in China DOI

Danmin Li,

Yichao Si, Xiaomeng Yan

et al.

Anthropocene, Journal Year: 2025, Volume and Issue: unknown, P. 100460 - 100460

Published: Jan. 1, 2025

Language: Английский

Citations

0
Preparation of a New Active Component 1,10-B10H8(S(C18H37)2)2 for Potentiometric Membranes for the Determination of Terbinafine Hydrochloride DOI Creative Commons
Е. С. Турышев, А. V. Golubev, A. Yu. Bykov

et al.

Inorganics, Journal Year: 2025, Volume and Issue: 13(2), P. 35 - 35

Published: Jan. 24, 2025

This paper presents a methodology for the preparation of new active component ion-selective membranes, based on di-substituted sulfonium derivative closo-decaborate anion at apical vertices with octadecylalkyl substituents 1,10-B10H8(S(C18H37)2)2. approach is characterized by physicochemical methods analysis (11B, 1H, 13C NMR spectroscopy, IR spectroscopy and elemental analysis). The compound obtained used as an PVC membrane selective to terbinafine hydrochloride. sensor developed highly drug be detected, has linearity range 4.0 × 10−8–1.0 10−2 detection limit 1.0 10−8, can detect hydrochloride in pH 3 6.

Language: Английский

Citations

0