在溶液中分析痕迹重金属使用液体阴极发光放电光谱学
Duixiong Sun1, Xinrong Ma1, Jiawei Chang1
1Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China.
Sensors (Basel, Switzerland)
|December 17, 2024
概括
这项研究提出了一种改进的气压发光放电原子发射光谱仪 (APGD-AES),用于检测水中的和铜等重金属. 便携式APGD-AES可提供灵敏,具有成本效益的环境污染物的现场监测.
科学领域:
- 分析化学 分析化学
- 环境科学 环境科学
- 频谱学是一种光谱学.
背景情况:
- (Cd) 和铜 (Cu) 造成的重金属污染引发了严重的环境和健康问题.
- 现有的检测方法可能缺乏实时监控的效率,可移植性或灵敏性.
- 需要先进的分析技术来快速量化各种水矩阵中的重金属.
研究的目的:
- 开发和优化一种改进的大气压发光放电原子辐射谱法 (APGD-AES) 技术.
- 建立一种灵敏,便携且具有成本效益的方法来量化水样中的Cd和Cu.
- 为了评估APGD-AES方法的性能,与已建立的技术比如石墨炉原子吸收光谱学 (GFAAS) 相比.
主要方法:
- 优化APGD-AES参数,包括放电电压 (550V用于Cd,570V用于Cu),流速 (3.6毫升/分钟) 和溶液pH (1.0).
- 使用优化APGD-AES系统在水样中的和铜的量化.
- 使用现实世界样本 (污水,自来水) 验证方法的性能,并与GFAAS进行比较.
主要成果:
- 达到了低检测极限:Cd为16μg/L,Cu为1.3μg/L.
- 证明了该方法在分析真实水样,包括污水和自来水的有效性.
- 展示了与石墨炉原子吸收光谱法 (GFAAS) 相似的性能.
结论:
- 改进的APGD-AES技术是对水中微量重金属的敏感和精确现场监测的一个有前途的工具.
- 该方法的优点包括低能耗,高激发能,紧的设计,便携性和成本效益.
- APGD-AES为环境监测提供了一个可行的替代方案,确保遵守重金属含量安全标准.
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