Analytical Sciences : the international journal of the Japan Society for Analytical Chemistry This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

Pesticide residue detection technology for herbal medicine: current status, challenges, and prospects
Anal Sci. 2024 Feb 17. doi: 10.1007/s44211-024-00515-9. Online ahead of print.ABSTRACTThe domains of cancer therapy, disease prevention, and health care greatly benefit from the use of herbal medicine. Herbal medicine has become the mainstay of developing characteristic agriculture in the planting area increasing year by year. One of the most significant factors in affecting the quality of herbal medicines is the pesticide residue problem caused by pesticide abuse during the cultivation of herbal medicines. It is urgent to solve the problem of detecting pesticide residues in herbal medicines efficiently and rapidly. In thi...
Source: Analytical Sciences : the international journal of the Japan Society for Analytical Chemistry - February 17, 2024 Category: Chemistry Authors: Bin Peng Yueliang Xie Qingfu Lai Wen Liu Xuelan Ye Li Yin Wanxin Zhang Suqin Xiong Heng Wang Hui Chen Source Type: research

Development of an on-site therapeutic drug monitoring method using a portable spectrometer
We report on the development of an on-site therapeutic drug monitoring (TDM) method for vancomycin (VCM) utilizing a portable spectrometer and commercially available immunoturbidimetric assay reagents designed for automated clinical chemistry analyzers. The method enables the quantification of VCM in plasma samples within 10 min, with a good correlation between the measured values and the theoretical values (r2 = 0.995). The intra and inter-day precisions were found to be below 12.5% and 17.7%, respectively. Moreover, we established a correlation between the quantitative values using this method and those measured through ...
Source: Analytical Sciences : the international journal of the Japan Society for Analytical Chemistry - February 15, 2024 Category: Chemistry Authors: Kenichiro Todoroki Nan Fukudo Yuto Kudoh Hajime Mizuno Jun Zhe Min Shimako Tanaka Shinya Uchida Noriyuki Namiki Toshimasa Toyo'oka Source Type: research

A new ratiometric fluorescent probe for rapid and highly selective detection of Cysteine in bovine serum
Anal Sci. 2024 Feb 15. doi: 10.1007/s44211-024-00516-8. Online ahead of print.ABSTRACTAs one of the most fundamental thiol compounds in the human body, cysteine (Cys) is involved in maintaining redox balance. Abnormal Cys levels can lead to various diseases. In this work, we successfully synthesized a fluorescent probe (CTBA) that can specifically detect Cys using acrylate as the reaction site, and CTBA has met the selectivity and anti-interference for Cys detection under optimized conditions. The linear range for Cys detection is between 0.05 and 100 μM and the detection limit is 0.0381 μM. Finally, this probe is used t...
Source: Analytical Sciences : the international journal of the Japan Society for Analytical Chemistry - February 15, 2024 Category: Chemistry Authors: Changjian Li Peng Ji Xin Liu Guodong Feng Zhiguang Song Yupeng Guo Source Type: research

Electrochemical determination of riboflavin in pharmaceuticals using unmodified screen printed carbon electrodes
In this study, we have devised an efficient and rapid approach to detect riboflavin (also known as Vitamin B2 or VB2) utilizing an unaltered screen-printed carbon electrode (SPCE). The unmodified screen-printed electrodes are created within the laboratory, where carbon ink is applied to a ceramic substrate. All experiments pertaining to the investigation of electrochemical behavior and the fine-tuning of crucial experimental parameters were conducted through cyclic voltammetry (CV). For quantitative assessments, square wave voltammetry (SWV) was employed. The findings indicate that unaltered SPCEs exhibit robust current si...
Source: Analytical Sciences : the international journal of the Japan Society for Analytical Chemistry - February 12, 2024 Category: Chemistry Authors: Skender Radoniqi Q ëndresa Spahiu Eda Mehmeti Kurt Kalcher Shpend Dragusha Source Type: research

PLA/CS-ZnO bionanocomposite for rapid catalytic reduction of nitrophenol compounds as a heterogeneous nanocatalyst
Anal Sci. 2024 Feb 7. doi: 10.1007/s44211-024-00510-0. Online ahead of print.ABSTRACTIn this research, a high efficiency and environmentally friendly method to reduce nitrophenol compounds such as 4-nitrophenol (4-NP), 2,4,6-trinitrophenol (2,4,6-TNP) and 2,4-dinitrophenol (2,4-DNP) was used in the presence of poly(lactic acid)/chitosan-ZnO ( PLA/CS-ZnO) bionanocomposite. Using FT-IR, SEM, XRD and UV-Vis techniques, PLA/CS-ZnO bionanocomposite was identified after synthesis. Also, the mechanical properties of the bionanocomposite were investigated using the stress-strain curve. The mentioned bionanocomposite showed a very ...
Source: Analytical Sciences : the international journal of the Japan Society for Analytical Chemistry - February 7, 2024 Category: Chemistry Authors: Ali Roostaie Reza Haddad Mehdi Haji Abdolrasouli Source Type: research

Improvement of limit of detection in primer extension-based multiplexed mutation assay using capillary electrophoresis
Anal Sci. 2024 Feb 6. doi: 10.1007/s44211-024-00508-8. Online ahead of print.ABSTRACTOne of the challenges in liquid biopsy for early cancer detection is ascribed to the fact that mutation DNA often represents an extremely small ratio of less than 1% compared to wild-type genes in blood. However, in conventional fragment analysis with capillary electrophoresis (CE), the detectable allele frequency could be about 5%. In this work, we developed an original reagent-based fragment analysis with single base extension (SBE) reactions for cancer-associated mutation assay using a commercially available CE device, and investigated ...
Source: Analytical Sciences : the international journal of the Japan Society for Analytical Chemistry - February 6, 2024 Category: Chemistry Authors: Takahiro Ando Takahide Yokoi Chihiro Manri Takashi Anazawa Takeshi Ishida Source Type: research

Determination of the total antioxidant capacity of the Chinese tea based on a novel "peroxidase/zirconium phosphonate"composite electrochemical sensor
Anal Sci. 2024 Feb 5. doi: 10.1007/s44211-023-00502-6. Online ahead of print.ABSTRACTIn this work, a novel zirconium phosphonate (ZrPR1R2) was prepared by decorating both the aminoethoxy- group (R1) and the carboxypropyl- group (R2) on the zirconium phosphate layers in order to manipulate further the immobilization of the peroxidase (POD), and an antioxidant biosensor with higher sensitivity was constructed by dropping the POD/ZrPR1R2 composite onto the glassy carbon electrode surface. The activity of the POD/ZrPR1R2 composite was detected by Uv-vis spectra. The direct electrochemical behavior, the electrocatalytic respons...
Source: Analytical Sciences : the international journal of the Japan Society for Analytical Chemistry - February 5, 2024 Category: Chemistry Authors: Li-Min Liu Xin-Jian Liang Fei Deng Ling-Feng Xu Lin-Li Hou De-Yong He Zhi-Jun Wang Chun-Fang Huang Source Type: research

Adsorption enrichment integrated with paper-based devices for detection of trace levels of hexavalent chromium in water samples
Anal Sci. 2024 Feb 6. doi: 10.1007/s44211-023-00504-4. Online ahead of print.ABSTRACTIn the present study, a sensitive microfluidic paper-based analytical device (μ-PADs) integrated with adsorption enrichment procedure was developed to analyze Cr(VI) in water samples. The affecting factors, including pH and amounts of reagents were optimized. The limit of detection of 0.0015 mg L-1 and linear range of 0.005-2 mg L-1 were achieved with good intra- and inter-day precision of 5.1 and 7.6% RSD, respectively. The results obtained by the proposed method were validated by inductively coupled plasma-optical emission spectrometry ...
Source: Analytical Sciences : the international journal of the Japan Society for Analytical Chemistry - February 5, 2024 Category: Chemistry Authors: Abdellah Muhammed Ahmed Hussen Takashi Kaneta Source Type: research

Analytical evaluation of food quality
Anal Sci. 2024 Feb;40(2):225-226. doi: 10.1007/s44211-023-00494-3.NO ABSTRACTPMID:38311663 | DOI:10.1007/s44211-023-00494-3 (Source: Analytical Sciences : the international journal of the Japan Society for Analytical Chemistry)
Source: Analytical Sciences : the international journal of the Japan Society for Analytical Chemistry - February 4, 2024 Category: Chemistry Authors: Mitsuru Tanaka Source Type: research

Nitrogen K-edge X-ray adsorption near-edge structure spectroscopy of chemically adsorbed ammonia gas on clay minerals and the < sup > 15 < /sup > N/ < sup > 14 < /sup > N-nitrogen isotopic fractionation
In this study, adsorption experiments were conducted using gaseous NH3 and representative clay minerals. The strongly adsorbed NH3 was 15N-enriched in a state of chemical equilibrium between the adsorption and desorption on the siliceous host surface. The nitrogen K-edge X-ray adsorption near-edge structure spectroscopy study revealed that these initial ammonia gases were chemically adsorbed as ammonium ions (NH4+) on clay minerals.PMID:38311696 | DOI:10.1007/s44211-023-00503-5 (Source: Analytical Sciences : the international journal of the Japan Society for Analytical Chemistry)
Source: Analytical Sciences : the international journal of the Japan Society for Analytical Chemistry - February 4, 2024 Category: Chemistry Authors: Haruna Sugahara Toshihiro Yoshimura Yusuke Tamenori Yoshinori Takano Nanako O Ogawa Yoshito Chikaraishi Naohiko Ohkouchi Source Type: research