Quantitative analysis of component contents in AS/PDM composite coagulant by infrared spectroscopy

IF 2.7 3区化学 Q2 CHEMISTRY, ANALYTICAL

Vibrational Spectroscopy Pub Date : 2025-03-16 DOI:10.1016/j.vibspec.2025.103789

Hao Wang, Yuhang Jiang, Xinjie Li, Yuejun Zhang

{"title":"Quantitative analysis of component contents in AS/PDM composite coagulant by infrared spectroscopy","authors":"Hao Wang, Yuhang Jiang, Xinjie Li, Yuejun Zhang","doi":"10.1016/j.vibspec.2025.103789","DOIUrl":null,"url":null,"abstract":"<div><div>In order to establish a quantitative analysis method for the components in the composite coagulant aluminum sulfate/poly dimethyl diallyl ammonium chloride (AS/PDM), this study first compared different sample preparation methods for infrared spectroscopy analysis. The electric hot plate drying method was selected due to its rapid sample preparation time and low moisture content. Based on the linear relationship between the mass ratio values of organic and inorganic components and the relative peak area ratio values of their characteristic infrared spectra, the mass ratio values were divided into four segments by order of magnitude. Samples were prepared for each segment, and their infrared spectra and corresponding relative peak area ratios were obtained. Different peak area calculation methods were compared, and four standard curves were constructed, with precision and recovery rates validated. Based on the measured mass ratio relationships between the components, the inorganic component Al<sub>2</sub>O<sub>3</sub> content was determined using the EDTA back-titration method, completing the development of the quantitative analysis method for both components. Finally, verification using samples from four different mass ratio value segments demonstrated that when a linear lower bound for integration was used to calculate peak areas, the maximum relative error within the selected mass ratio value range was less than 5 %, which was significantly better than the results obtained using a curve as the lower bound for integration. Therefore, this method provides experimental evidence for the quantitative analysis of AS/PDM components and supports the establishment of quality standards for the product.</div></div>","PeriodicalId":23656,"journal":{"name":"Vibrational Spectroscopy","volume":"138 ","pages":"Article 103789"},"PeriodicalIF":2.7000,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Vibrational Spectroscopy","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0924203125000232","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}

引用次数: 0

Abstract

In order to establish a quantitative analysis method for the components in the composite coagulant aluminum sulfate/poly dimethyl diallyl ammonium chloride (AS/PDM), this study first compared different sample preparation methods for infrared spectroscopy analysis. The electric hot plate drying method was selected due to its rapid sample preparation time and low moisture content. Based on the linear relationship between the mass ratio values of organic and inorganic components and the relative peak area ratio values of their characteristic infrared spectra, the mass ratio values were divided into four segments by order of magnitude. Samples were prepared for each segment, and their infrared spectra and corresponding relative peak area ratios were obtained. Different peak area calculation methods were compared, and four standard curves were constructed, with precision and recovery rates validated. Based on the measured mass ratio relationships between the components, the inorganic component Al₂O₃ content was determined using the EDTA back-titration method, completing the development of the quantitative analysis method for both components. Finally, verification using samples from four different mass ratio value segments demonstrated that when a linear lower bound for integration was used to calculate peak areas, the maximum relative error within the selected mass ratio value range was less than 5 %, which was significantly better than the results obtained using a curve as the lower bound for integration. Therefore, this method provides experimental evidence for the quantitative analysis of AS/PDM components and supports the establishment of quality standards for the product.

查看原文本刊更多论文

红外光谱法定量分析AS/PDM复合混凝剂中组分含量

为了建立复合混凝剂硫酸铝/聚二甲基二烯丙基氯化铵（AS/PDM）中组分的定量分析方法，本研究首先比较了不同样品制备方法进行红外光谱分析。选用电热板干燥法制备样品时间快、含水率低。根据有机和无机组分的质量比值与其特征红外光谱的相对峰面积比值之间的线性关系，将质量比值按数量级划分为4段。对每个片段制备样品，得到其红外光谱和相应的相对峰面积比。对比了不同峰面积计算方法，构建了4条标准曲线，并对其精密度和回收率进行了验证。根据测定的组分之间的质量比关系，采用EDTA反滴定法测定了无机组分Al2O3的含量，完成了两组分定量分析方法的建立。最后，对4个不同质量比值段的样品进行验证，结果表明，采用线性积分下界计算峰面积时，所选质量比值范围内的最大相对误差小于5 %，明显优于采用曲线作为积分下界的结果。因此，该方法为AS/PDM组分的定量分析提供了实验依据，为产品质量标准的制定提供了依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Vibrational Spectroscopy 化学-分析化学

CiteScore

4.70

自引率

4.00%

发文量

103

审稿时长

52 days

期刊介绍： Vibrational Spectroscopy provides a vehicle for the publication of original research that focuses on vibrational spectroscopy. This covers infrared, near-infrared and Raman spectroscopies and publishes papers dealing with developments in applications, theory, techniques and instrumentation. The topics covered by the journal include: Sampling techniques, Vibrational spectroscopy coupled with separation techniques, Instrumentation (Fourier transform, conventional and laser based), Data manipulation, Spectra-structure correlation and group frequencies. The application areas covered include: Analytical chemistry, Bio-organic and bio-inorganic chemistry, Organic chemistry, Inorganic chemistry, Catalysis, Environmental science, Industrial chemistry, Materials science, Physical chemistry, Polymer science, Process control, Specialized problem solving.