相关实验视频
Updated: May 25, 2025

07:28
A Small Volume Procedure for Viral Concentration from Water
Published on: February 3, 2015
10.0K
优化氧化吸附-沉,以改善废水中的病毒检测
Karla Farmer-Diaz1, Makeda Matthew-Bernard1, Sonia Cheetham2
1Department of Microbiology, Immunology, and Pharmacology, School of Medicine, St. George's University, St George P.O Box 7, Grenada.
International journal of environmental research and public health
|February 26, 2025
概括
这项研究开发了一种基于废水的流行病学标准化化 (AlCl3) flokulation 方法. 这种具有成本效益的协议可以有效地恢复包裹和非包裹病毒,用于社区病原体监测.
科学领域:
- 环境微生物学环境微生物学
- 公共卫生监督是对公共卫生的监督.
- 病毒学 病毒学
背景情况:
- 基于废水的流行病学 (WBE) 对社区病原体监测至关重要.
- 目前的WBE方法主要检测非外病毒,限制了全面的监测.
- 需要标准化的方法来检测包裹和非包裹病毒.
研究的目的:
- 评估氧化吸附沉技术,同时从废水中恢复包裹和非包裹病毒.
- 为了优化病毒恢复的条件,使用化 (AlCl3) flokulation.
- 为WBE建立一个成本效益高,标准化的协议.
主要方法:
- 测试了四种氧化吸附沉技术.
- 废水样本中添加了包裹式 (Φ6菌) 和非包裹式 (MS2菌) 病毒替代物.
- 使用逆转录定量PCR (RT-qPCR) 量化病毒恢复.
主要成果:
- 对于包裹病毒和非包裹病毒,最佳恢复条件各不相同.
- 最高的包裹病毒恢复:在pH值3.5的AlCl3,15分钟的花化,3%的化.
- 最高的非包膜病毒恢复率:pH值为6.0的AlCl3,没有花化,10%的化.
- 一个标准化的协议 (pH值为6.0的AlCl3,15分钟的化,3%的化) 有效地恢复了这两种病毒类型.
结论:
- 标准化的AlCl3花可以有效地从废水中恢复包裹和非包裹的病毒.
- 这种方法为全面的WBE和疫情监测提供了一种具有成本效益的方法.
- 优化的协议增强了WBE在公共卫生监测中的实用性.
相关概念视频
Precipitation and Co-precipitation
1.6K
Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
1.6K
Colloidal precipitates
481
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
481
Washing, Drying, and Ignition of Precipitates
823
After filtration, the precipitate is washed to remove coprecipitated impurities and any remaining mother liquor. Colloidal precipitates, such as silver chloride, are washed with an electrolyte (such as dilute nitric acid) to prevent the peptization of the precipitate. In the case of slightly soluble precipitates, the wash solution contains a common ion to reduce solubility. Lead sulfate, which is slightly soluble in water, is washed with dilute sulfuric acid. Similarly, wash solutions may be...
823

