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Guest Editorial: Frontiers of Separation Analysis
Anal Sci. 2024 Apr 5. doi: 10.1007/s44211-024-00563-1. Online ahead of print.NO ABSTRACTPMID:38578574 | DOI:10.1007/s44211-024-00563-1 (Source: Anal Sci)
Source: Anal Sci - April 5, 2024 Category: Chemistry Authors: Toshio Takayanagi Kenichiro Todoroki Takuya Kubo Ikuo Ueta Source Type: research

Sandwich-type electrochemical immunosensing of CA125 by using nanoribbon-like Ti 3 C 2 T x MXenes and toluidine blue/UIO-66-NH 2 
Anal Sci. 2024 Apr 5. doi: 10.1007/s44211-024-00528-4. Online ahead of print.ABSTRACTCA125 (carbohydrate antigen 125) is an important biomarker of ovarian cancer, so developing effective method for its detection is of great significance. In the present work, a novel sandwich-like electrochemical immunosensor (STEM) of CA125 was constructed by preparing nanoribbon-like Ti3C2Tx MXenes (Ti3C2TxNR) to immobilize primary antibody (PAb) of CA125 and UIO-66-NH2 MOFs structure to immobilize second antibody (SAb) and electroactive toluidine blue (Tb) probe. In this designed STEM assay, the as-prepared Ti3C2TxNR nanohybrid offers th...
Source: Anal Sci - April 5, 2024 Category: Chemistry Authors: Xuqiao Mei Zhenhua Zeng Wenxin Xu Huicong Yang Yuanhai Zheng Haimin Gao Chuncai Wu Yanping Zheng Qiaoli Xu Guowei Wang Yuhuang Xu Ayang Wu Source Type: research

Structure and complexation mechanism of aqueous Zn(II)-acetate complex studied by XAFS and Raman spectroscopies
Anal Sci. 2024 Apr 5. doi: 10.1007/s44211-024-00549-z. Online ahead of print.ABSTRACTIn this work, the structure of Zn acetate has been determined by a combination of X-ray absorption fine structure and Raman spectroscopy. We have analyzed the local atomic environment and the main vibrational bands of the acetate and Zn acetate at different pH. The results suggest that Zn acetate complex acquires a bidentate structure that modifies its first coordination shell. Meanwhile, the coordination shell of the hydrated Zn cation is formed by 6 hydroxides at a mean distance of 2.06 Å, the coordination shell of the Zn cation in the ...
Source: Anal Sci - April 5, 2024 Category: Chemistry Authors: Alvaro Munoz-Noval Kazuhiro Fukami Takuya Kuruma Shinjiro Hayakawa Source Type: research

Determination of phosphorus in commercially available milk using ion chromatography with perchloric acid deproteinization
Anal Sci. 2024 Apr 4. doi: 10.1007/s44211-024-00552-4. Online ahead of print.ABSTRACTSuppressed ion chromatography with perchloric acid deproteinization was developed for the determination of phosphorus in commercially available milk. Although the perchloric acid deproteinization method is widely used in the medical field, it sees limited application in the food industry. Herein, the concentration of perchloric acid and hydrolysis conditions were examined, specifically regarding perchloric acid deproteinization, which was used as a deproteinization method in this study. The calibration curve constructed from the peak area ...
Source: Anal Sci - April 4, 2024 Category: Chemistry Authors: Kenji Yoshikawa Futa Kogure Kohei Tsukada Takeshi Toyama Akio Sakuragawa Hisomu Nagashima Source Type: research

A novel tryptanthrin-based "on-off-on" probe for sequential sensing Cu 2+ /S 2- in water samples
Anal Sci. 2024 Apr 4. doi: 10.1007/s44211-024-00559-x. Online ahead of print.ABSTRACTCopper ions (Cu2+) and sulfide (S2-) play essential roles in many physiologies and pathologic processes. Herein, a new "on-off-on" tryptanthrin-based probe TR-1 (TR-1) has been designed and synthesized in a facile and economical way. TR-1 exhibited highly selective and sensitive response to Cu2+ without any interference over 14 competitive metal ions and the detection limit downs to 24 nM, which is far below the Chinese standard of fishery water quality (157 nM). The 'in situ' prepared complex TR-1 + Cu2+ could also be applied to detect S2...
Source: Anal Sci - April 4, 2024 Category: Chemistry Authors: Cuiling Wang Ying Zhou RongRong Liu Dongyuan Shang Kangrui Jin Jinrui Wang Jianli Liu Bao-Long Hou Source Type: research

Pulpwood holocellulose model transfer based on screening with consistent and stable signals algorithm
In this study, in order to realize the sharing of the near-infrared analysis model of holocellulose between three spectral instruments of the same type, 84 pulp samples and their content of holocellulose were taken as the research objects. The effects of 10 pre-processing methods, such as 1st derivative (D1st), 2nd derivative (D2nd), multiplicative scatter correction (MSC), standard normal variable transformation (SNV), autoscaling, normalization, mean centering and pairwise combination, on the transfer effect of the stable wavelength selected by screening wavelengths with consistent and stable signals (SWCSS) were discuss...
Source: Anal Sci - April 4, 2024 Category: Chemistry Authors: Wang Honghong Li Penghui Xiong Zhixin Liang Long Source Type: research

Facile synthesis of amino-modified magnetic covalent organic framework for the efficient extraction and determination of anionic azo dyes in carbonated beverages
Anal Sci. 2024 Apr 4. doi: 10.1007/s44211-024-00561-3. Online ahead of print.ABSTRACTIn this work, a novel magnetic covalent organic framework (COF (TpPa-NH2) @ Fe3O4) was prepared via two step by simple solvent method for the extraction of anionic azo dye residues in food. The as-prepared COF (TpPa-NH2) @ Fe3O4 nanocomposite was characterised by scanning electron microscope, transmission electron microscope, Fourier transform-infrared spectroscopy, X-ray diffraction and vibrating sample magnetometer. Before high-performance liquid chromatography with ultraviolet detection (HPLC-UV) determination, it was used as magnetic a...
Source: Anal Sci - April 4, 2024 Category: Chemistry Authors: Shuping Guan Hao Wu Wanming Lin Yaxin Chen Zhuliang Wang Source Type: research

Rapid visual dual-mode detection of Zr(IV) based on L-histidine functionalized gold nanoparticles
Anal Sci. 2024 Apr 4. doi: 10.1007/s44211-024-00557-z. Online ahead of print.ABSTRACTHeavy metal pollution has always been a great threat to human health and safety. Compared with other heavy metals, although zirconium ion (Zr(IV)) is equally harmful, due to the lack of research on Zr(IV) in the biological systems and environment, its detection does not seem to have received the attention it deserves. Herein, a rapid visual dual-mode detection (colorimetric and chrominance method) of Zr(IV) based on L-histidine functionalized gold nanoparticles (HIS-AuNPs) has been reported. AuNPs and HIS-AuNPs before and after adding Zr(I...
Source: Anal Sci - April 4, 2024 Category: Chemistry Authors: Zhili Liu Yumei Yan Jing Li Wenfeng Zhou Haixiang Gao Runhua Lu Source Type: research