从饮用水源中的基消毒剂残留物中产生的消毒副产品的表征
Dongmei Yang1, Jiale Huang1, Fenli Min2
1College of Resource and Environmental Science, Hubei University, Wuhan 430062, China.
Toxics
|November 26, 2024
概括
由于残留,三甲和三酸等消毒副产品 (DBPs) 在饮用水中形成. 诸如pH值,氨和氧化物质等因素影响它们的产生,有助于控制策略.
科学领域:
- 环境化学环境化学
- 分析水质 分析水质
- 公共卫生 公共卫生
背景情况:
- 基于的消毒对于安全的饮用水至关重要.
- 消毒副产品 (DBPs) 可以从剩余的中形成.
- 了解DBP形成对于水安全至关重要.
研究的目的:
- 描述饮用水源中DBP的形成.
- 确定影响DBP生成的关键因素.
- 为DBP预防和控制提供理论基础.
主要方法:
- 从长江,汉江和梁子湖收集了水样.
- 分析了消毒副产品,包括三甲 (TCM) 和三酸 (TCAA).
- 进行了直角实验,以评估各种参数 (如pH,氨,化物,温度,NaClO度,反应时间) 对DBP形成的影响.
主要成果:
- 三甲 (TCM) 和三酸 (TCAA) 被确定为主要的DBPs.
- DBP生成与氧化物质,芳香化合物,pH和氨 (NH3-N) 有显著的正相关性.
- 随着反应时间和NaClO度增加,TCAA度增加到一定程度,而TCM形成受到化物,NH3-N和pH的影响,TCAA受汉河温度的影响.
结论:
- 氧化物质,芳香化合物,pH值和氨等因素对饮用水源中的DBP形成产生重大影响.
- 化物,NH3-N,pH和温度等特定参数在TCM和TCAA的生成中起着不同的作用.
- 这项研究为开发有效的预防和控制饮用水中DBP的战略提供了关键的见解.
更多相关视频
07:07Controlled-release of Chlorine Dioxide in a Perforated Packaging System to Extend the Storage Life and Improve the Safety of Grape Tomatoes
Published on: April 7, 2017
11.0K
11:47Evaluation of the Efficacy of Organic Peroxyacids for Eradicating Dairy Biofilms Using an Approach Combining Static and Dynamic Methods
Published on: December 9, 2022
1.6K
相关概念视频
01:27Chemical Agents for Microbial Control
2
Chemicals play important roles in controlling microbial growth by targeting microbial structures and functions as sanitizers, antiseptics, disinfectants, and sterilants.Alcohols are commonly used sanitizers, effectively disrupting lipid membranes, which compromises cell integrity. They are also used as antiseptics and disinfectants due to their rapid action and versatility.Phenols and their derivatives phenolics , known for denaturing proteins and disrupting cell membranes, are particularly...
2
04:01Factors Affecting Solubility
33.1K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:
33.1K
01:30Cleaning, Sterilization, and Disinfection
6.6K
Cleaning, disinfection, and sterilization are the methods that help to break the infection chain and prevent disease.
Cleaning
The cleaning process usually involves using water with detergents or enzymatic cleaner and removing foreign material from objects and surfaces, including organic material such as body fluids or inorganic material like soil. Cleaning is performed before high-level disinfection and sterilization because foreign materials on the cover of the devices interfere with process...
Cleaning
The cleaning process usually involves using water with detergents or enzymatic cleaner and removing foreign material from objects and surfaces, including organic material such as body fluids or inorganic material like soil. Cleaning is performed before high-level disinfection and sterilization because foreign materials on the cover of the devices interfere with process...
6.6K
01:18Titration of Polyprotic Base with a Strong Acid
765
The titration of a polyprotic base such as sodium carbonate with a strong acid such as hydrochloric acid results in two equivalence points on the titration curve. At the first equivalence point, the carbonate ions in the base are completely converted to bicarbonate ions. The second equivalence point corresponds to the complete conversion of bicarbonate ions to carbonic acid, which dissociates into carbon dioxide and water. The region before the first equivalence point corresponds to the...
765
01:18Carboxylic Acids to Acid Chlorides
6.8K
Carboxylic acids react with SOCl2 or PCl5 to form acid chlorides. Amongst the carboxylic acid derivatives, acid chlorides are the most reactive and synthetically important derivatives. They are useful reagents for Friedel–Crafts acylation of some aromatic compounds.
6.8K
01:10Hydrolysis of Chlorobenzene to Phenol: Dow Process
2.6K
Simple aryl halides do not react with nucleophiles under normal conditions. However, the reaction can proceed under drastic conditions involving high temperatures and high pressure to give the substituted products. For example, chlorobenzene is converted to phenol using aqueous sodium hydroxide at 350 °C under high pressure by the Dow process. The reaction follows an elimination-addition mechanism involving a benzyne intermediate. Here, the chloride ion is...
2.6K