{"title":"Rapid and Sensitive Detection of Lead Ions Based on Backward Light Scattering Technique","authors":"Rui Yuan, Huachun Li, Kejun Tan, Qiuju Zhou, Fei Wu, Zhen Cheng","doi":"10.3103/S1063455X25020092","DOIUrl":null,"url":null,"abstract":"<p>This work presents a novel analytical method for detecting lead ions (Pb(II)) based on backward light scattering (BLS). The BLS intensity was significantly enhanced by the formation of ion-association complexes between ciprofloxacin (CIP), Congo Red (CR), and Pb(II) through electrostatic attraction and hydrophobic interaction in a Britton−Robinson (BR) buffer solution at pH 4.56. The maximum BLS peak was observed at 399 nm. The BLS intensity showed a linear relationship with Pb(II) concentrations ranging from 0.5 to 60.0 μM, with a limit of detection (LOD) of 50 nM. Studies on the BLS spectrum, absorption characteristics, and reaction mechanism were conducted, and optimal reaction conditions as well as the impact of interfering substances were investigated. This method was successfully applied to the determination of Pb(II) in environmental water samples, achieving recoveries between 91 and 104%, with a relative standard deviation (RSD) ≤ 4.7%. The proposed BLS method offers rapid analysis, high sensitivity, environmental friendliness, and good stability, providing a theoretical basis for real-time, online monitoring of lead ions using BLS technology.</p>","PeriodicalId":680,"journal":{"name":"Journal of Water Chemistry and Technology","volume":"47 2","pages":"159 - 166"},"PeriodicalIF":0.5000,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Water Chemistry and Technology","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.3103/S1063455X25020092","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
引用次数: 0
Abstract
This work presents a novel analytical method for detecting lead ions (Pb(II)) based on backward light scattering (BLS). The BLS intensity was significantly enhanced by the formation of ion-association complexes between ciprofloxacin (CIP), Congo Red (CR), and Pb(II) through electrostatic attraction and hydrophobic interaction in a Britton−Robinson (BR) buffer solution at pH 4.56. The maximum BLS peak was observed at 399 nm. The BLS intensity showed a linear relationship with Pb(II) concentrations ranging from 0.5 to 60.0 μM, with a limit of detection (LOD) of 50 nM. Studies on the BLS spectrum, absorption characteristics, and reaction mechanism were conducted, and optimal reaction conditions as well as the impact of interfering substances were investigated. This method was successfully applied to the determination of Pb(II) in environmental water samples, achieving recoveries between 91 and 104%, with a relative standard deviation (RSD) ≤ 4.7%. The proposed BLS method offers rapid analysis, high sensitivity, environmental friendliness, and good stability, providing a theoretical basis for real-time, online monitoring of lead ions using BLS technology.
期刊介绍:
Journal of Water Chemistry and Technology focuses on water and wastewater treatment, water pollution monitoring, water purification, and similar topics. The journal publishes original scientific theoretical and experimental articles in the following sections: new developments in the science of water; theoretical principles of water treatment and technology; physical chemistry of water treatment processes; analytical water chemistry; analysis of natural and waste waters; water treatment technology and demineralization of water; biological methods of water treatment; and also solicited critical reviews summarizing the latest findings. The journal welcomes manuscripts from all countries in the English or Ukrainian language. All manuscripts are peer-reviewed.