在城市废水中使用被动采样调查芳香胺的存在情况
Simona Krupčíková1, Marek Stiborek1, Petra Kalousková1
1RECETOX, Faculty of Science, Masaryk University, Kotlarska 2, 61137, Brno, Czech Republic.
The Science of the total environment
|May 16, 2024
概括
通过被动采样,有效地监测了废水中的基芳氨酸 (AAs). 基于水凝的样本显示出在废水处理厂长期AA监测中表现优异.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
- 环境科学 环境科学
背景情况:
- 芳香胺 (AAs) 是表面水中发现的致变性合成化合物,通常来自染料和农药转化产品.
- 尽管AAs度低,但由于它们的致变性,它们存在风险,因此需要在水生环境中进行有效监测.
- 污水处理厂 (WWTPs) 是AA进入环境的重要入口点,需要强大的分析方法来分析流入和排放.
研究的目的:
- 评估三种被动采样器 (PSs) 的性能,用于从废水中丰富芳胺.
- 为了比较WWTP流入和流出中的不同PS配置的积累效率和采样率.
- 确定最适合的被动采样方法,以长期监测废水中的AA.
主要方法:
- 测试了三种类型的被动采样器:AttractSPETM SDB-RPS,带有水凝层的SDB-RPS,以及一个修改的Bakerbond Speedisk® H2O-Philic.
- PSs在废水中部署了1-4周,并使用液态染色体质谱法 (LC/MS) 分析了累积的AA.
- 一项有针对性的分析确定了42种氨基,其度与24小时复合水样相比较.
主要成果:
- 在流入和流出样本中分别检测到11个和13个AA,其度从ng L-1到μg L-1.1.不等.
- 被动样本在28天内有效积累了AA,在所有样本中检测到多达34种独特的化合物.
- 所有测试的PS都显示了可比的氨基积累,但基于水凝的PS在时间整合和采样率稳定性方面表现优越.
结论:
- 被动采样器是有效的工具,用于监测废水处理厂的污水和废水中的芳胺.
- 用凝修改的被动采样器为AAs的长期监测提供了更强大的性能,提供了更强大的采样率.
- 该研究强调了被动采样在评估水生系统中突变性AA的存在和命运方面的实用性.
更多相关视频
10:29Calibrated Passive Sampling - Multi-plot Field Measurements of NH3 Emissions with a Combination of Dynamic Tube Method and Passive Samplers
Published on: March 21, 2016
12.3K
07:26A Simple Method for Automated Solid Phase Extraction of Water Samples for Immunological Analysis of Small Pollutants
Published on: January 1, 2016
13.7K
相关概念视频
01:26Physical Properties of Amines
3.1K
Amines with low molecular weight are usually gaseous at room temperature, while those with high molecular weight are liquid or solids in nature. Usually, low molecular weight amines have a rotten fish-like smell. Diamines typically have a pungent smell. For instance, cadaverine and putrescine, depicted in Figure 1, are two molecules responsible for decaying tissue.
3.1K
01:19Mass Spectrometry of Amines
4.2K
In mass spectroscopy, amines undergo fragmentation to give parent ions with odd molecule weights. This observed mass spectrum follows the nitrogen rule: a molecule with an odd number of nitrogen atoms produces a parent ion with an odd molecular weight. The remaining fragments have an even mass.
Amines undergo fragmentation through α cleavage, producing nitrogen-containing cations—iminium ions—and alkyl radicals. Mass spectra of aromatic and cyclic aliphatic amines exhibit...
Amines undergo fragmentation through α cleavage, producing nitrogen-containing cations—iminium ions—and alkyl radicals. Mass spectra of aromatic and cyclic aliphatic amines exhibit...
4.2K
01:25Basicity of Heterocyclic Aromatic Amines
6.0K
Heterocyclic amines, where the N atom is a part of an alicyclic system, are similar in basicity to alkylamines. Interestingly, the heterocyclic amine having a nitrogen atom as part of an aromatic ring has much less basicity than its corresponding alicyclic counterpart. For this reason, as presented in Figure 1, piperidine (pKb = 2.8) is significantly more basic than pyridine (pKb = 8.8).
6.0K
01:21Atomic Absorption Spectroscopy: Lab
348
For AAS measurements, samples must be introduced as clear solutions, often requiring extensive preliminary treatment to dissolve materials like soils, animal tissues, and minerals. Common methods for sample preparation include treatment with hot mineral acids, wet ashing, combustion in closed containers, high-temperature ashing, or fusion with reagents.
Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing...
Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing...
348
01:19NMR Spectroscopy Of Amines
8.7K
In proton NMR spectroscopy, primary amines and secondary amines showcase their N–H protons as a broad signal in the chemical shift range between δ 0.5 and 5 ppm. The exact position in this range depends on several factors, including sample concentration, hydrogen bonding, and the type of solvent used. Since amine protons undergo fast proton exchange in solution, the protons are labile and therefore do not participate in any splitting with adjacent protons. Thus, the observed peak is...
8.7K
01:23Amines to Sulfonamides: The Hinsberg Test
3.4K
The Hinsberg test is a method to identify primary, secondary and tertiary amines, named after its pioneer, Oscar Hinsberg. Here, amines are treated with benzenesulfonyl chloride, also known as the Hinsberg reagent, in the presence of an excess of aqueous base, followed by acidification. Based on the nature of the amines, different changes are observed.
Generally, a primary amine reacts with the Hinsberg reagent to produce an N-substituted benzenesulfonamide. The electron-withdrawing...
Generally, a primary amine reacts with the Hinsberg reagent to produce an N-substituted benzenesulfonamide. The electron-withdrawing...
3.4K