Determination of Tropospheric Chlorine and Hypochlorous Acid Using Immobilized Sulfonamide Collectors

使用固定式磺酰胺捕收器测定对流层氯和次氯酸

• 批准号: 9505436
• 负责人: Brian Johnson
• 金额: $ 10.96万
• 依托单位: University of Nevada Las Vegas
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-08-01 至 1999-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9505436&HistoricalAwards=false
• 关键词: Determination; Tropospheric; Chlorine; Hypochlorous; Acid

9505436 Johnson A sulfonamide-based collection system for tropospheric active chlorine will be developed. Measurements of active chlorine species (predominantly hypochlorous acid and mmlecular chlorine) is a recent concern, as these species may have a significant impact on marine boundary layer chemistry. Advantages of the proposed collection technique over current methods include the potential for enhanced sensitivity, the possibility of speciation of active chlorine compounds, and the possibility of detecting active bromine. The proposed work includes laboratory testing of experimental implementations of sulfonamide-bonded media to evaluate: 1) collection efficiency for chlorine and hypochlorous acid, 2) ability to discriminate between the various chlorine and bromine species collected (including possible artifacts), and 3) possible interferences from other atmospheric species. The final stage of the proposed work will be preliminary field measurements at a remote marine site in California.

9505436 Johnson 将开发基于磺酰胺的对流层活性氯收集系统。 活性氯物质（主要是次氯酸和分子氯）的测量最近受到关注，因为这些物质可能对海洋边界层化学产生重大影响。 与现有方法相比，所提出的收集技术的优点包括提高灵敏度的潜力、活性氯化合物形态形成的可能性以及检测活性溴的可能性。 拟议的工作包括对磺酰胺键合介质的实验实施进行实验室测试，以评估：1）氯和次氯酸的收集效率，2）区分收集的各种氯和溴物种的能力（包括可能的伪影），以及3）可能的来自其他大气物种的干扰。 拟议工作的最后阶段将在加利福尼亚州的一个偏远海洋地点进行初步现场测量。