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Accuracy, Precision, Cost, and Acceptability of Silver Testing Methods in Ceramic Filter Manufacturing Facilities.

机译:陶瓷过滤器制造设施中银测试方法的准确性,准确性,成本和可接受性。

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摘要

Locally-manufactured ceramic water filters are one effective technology for household drinking water treatment. During manufacturing, silver nanoparticles or silver nitrate are applied to increase bacterial inactivation. There is currently no recommended method to test silver application or residual concentrations during manufacturing. We identified six commercially-available silver test strips, kits, and meters, and evaluated them by: 1) measuring in quintuplicate 6 samples from 100-1,000 mg/L (application range) and 6 samples from 0.0-1.0 mg/L (residual range) of silver nanoparticles and silver nitrate to determine accuracy and precision; 2) conducting volunteer testing to assess ease-of-use; and, 3) comparing costs. We found no method was appropriate for testing silver nanoparticles. For silver nitrate, accuracy ranged from 3-100% error, most methods were precise, volunteers found test strip methods easiest but meters most reliable, and cost for 100 tests were 36-1,600 USD. No currently available method met criteria for recommending to filter manufacturers. We recommend development of field-appropriate methods that can measure application and residual concentrations and test silver nanoparticles.
机译:本地制造的陶瓷滤水器是一种用于家庭饮用水处理的有效技术。在制造过程中,应用银纳米颗粒或硝酸银以增加细菌灭活作用。当前尚无推荐的方法来测试制造过程中的银含量或残留浓度。我们确定了六个市售的银质测试条,试剂盒和仪表,并通过以下方法对其进行了评估:1)一式五份测量100-1,000 mg / L(应用范围)中的6个样品和0.0-1.0mg / L(残留物)中的6个样品范围)的银纳米颗粒和硝酸银,以确定准确性和精密度; 2)进行志愿者测试以评估易用性; 3)比较成本。我们发现没有适合测试银纳米颗粒的方法。对于硝酸银,准确性范围为3-100%,大多数方法都是精确的,志愿者发现试纸条方法最简单,但仪表最可靠,而100次测试的费用为36-1,600美元。当前没有可用的方法符合推荐过滤器制造商的标准。我们建议开发适合现场使用的方法,该方法可以测量应用和残留浓度并测试银纳米颗粒。

著录项

  • 作者

    Meade, Rhiana Davida.;

  • 作者单位

    Tufts University.;

  • 授予单位 Tufts University.;
  • 学科 Environmental engineering.;Environmental health.
  • 学位 M.S.
  • 年度 2016
  • 页码 72 p.
  • 总页数 72
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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