根据导电性定位确定石和水泥基材料中的硫酸盐含量
Dafu Wang1,2, Jieming Zhang1, Jingting Zhou1
1School of Architecture and Planning, Yunnan University, Kunming 650050, China.
Materials (Basel, Switzerland)
|August 28, 2025
概括
一个新的物联网导电计量定位系统准确地测量石和水泥材料中的低硫酸盐度. 这种方法克服了传统的局限性,为材料分析和耐久性评估提供了更高的精度.
科学领域:
- 材料科学与工程
- 分析化学
- 土木工程
背景情况:
- 精确的硫酸盐 (SO42-) 确定对于了解基于水泥的材料腐蚀和耐用性至关重要.
- 传统的方法 (重力测量,EDTA定位) 与石 (PG) 和水泥中的低硫酸盐度作斗争.
- 现有的方法缺乏可靠材料分析所需的精度和自动化.
研究的目的:
- 开发一个基于物联网的导电计量定位系统,用于精确的硫酸盐量化.
- 克服传统方法在PG和水泥中分析低SO2水平的局限性.
- 提供复杂材料中硫酸盐检测的标准化和自动化协议.
主要方法:
- 使用酸 (Ba(NO3) 2) 作为标称剂的物联网启用导电计量标称系统的开发.
- 使用Ag2O和CO2消除H,Cl和Ca2+离子干扰的方法.
- 优化滴定参数,包括速率,样品体积 (最佳5mL) 和滴定剂度.
主要成果:
- 在15个试验中,该系统的准确性高,标准偏差为0.013和变化系数为0.52%.
- 恢复率在103.2%至103.9%之间,表明硫酸盐的测量可靠.
- 该方法有效量化了PG和基于水泥的材料中的SO4−,证明了其实际适用性.
结论:
- 基于物联网的导电计量定位系统提供了精确,自动化和标准化的硫酸盐检测方法.
- 该方法为复杂的工业和学术环境中的硫酸盐快速分析提供了重要的理论和技术支持.
- 该系统加强了工业质量控制,并支持土木工程和材料科学领域的进一步研究.
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