新興汚染物質
- 高速で高感度な測定
- 数秒で検出できる超低検出限界
- 正確な同定のための高い質量分解能
- A wide range of reagent ions available to increase detectable chemical scope and specificity
- 現場展開が可能で、移動測定が可能
背景
Emerging Contaminants in the Atmosphere
Emerging contaminants (ECs) are synthetic or naturally occurring chemicals that, while not yet regulated or routinely monitored, pose potential risks to environmental and human health. These substances enter the environment through multiple pathways, including the production and disposal of new materials, pharmaceuticals, industrial processes, and agricultural products.
The evolution of EC recognition and regulation is well illustrated by persistent organic pollutants (POPs). Compounds like DDT, PCBs, and dioxins were among the first ECs identified, initially drawing concern for their environmental persistence and bioaccumulation. Years of research eventually led to their regulation under the Stockholm Convention. Today, several new chemical groups are following a similar trajectory, including:
– Per- and polyfluoroalkyl substances (PFAS)
– Plasticizers (including phthalates)
– Flame retardants
– Siloxanes, particularly cyclic variants like D4 (octamethylcyclotetrasiloxane) and D5 (decamethylcyclopentasiloxane)
Volatile and semi-volatile ECs released into the air during industrial processes or from materials [1] present unique monitoring challenges due to their ability to disperse through air transport, potentially reaching locations far from their emission sources [2]. Traditional analytical methods for detecting trace levels of airborne ECs often involve complex, time-consuming, and expensive procedures. This has created strong demand for real-time monitoring solutions that can rapidly assess emissions, verify removal efficiencies, and demonstrate regulatory compliance.
TOFWERK Vocus mass spectrometer addresses these challenges by providing real-time analysis of emerging contaminants without sample preparation or GC separation. The system supports multiple reagent ion chemistry options in both PTR and Aim Reactors, enabling users to optimize detection specificity for different EC classes. Available in configurations ranging from compact mobile units to advanced laboratory systems, Vocus instruments detect compounds at parts-per-trillion concentrations with one-second resolution, setting new standards for online emerging contaminant analysis.
ソリューション
Plasticizers Analysis using the Vocus Mass Spectrometer with the Aim Reactor
- Detects and quantifies in real time
- Achieves temporal resolution exceeding conventional methods
- Provides sensitivity below 0.3 ncps/ppt
- Measures phthalates down to hundreds of ppq
- Delivers dual high sensitivity and specificity for phthalates
- Performs reliably in dynamic ambient conditions
Learn about additional solutions for PFAS そして ethylene oxide.
Calibration curves for selective phthalate.
Persistent Organic Pollutant Monitoring Using the Vocus Mass Spectrometer with the Aim Reactor
- Monitors in real time with temporal resolution exceeding conventional methods
- Detects POPs below 5 ppt with 1 s averaging times
- Delivers sensitivity below 0.3 ncps/ppt with high POP specificity
- Performs reliably in dynamic ambient environments
Calibration curves for 4,4 DDT.
Fast, Real-Time Detection of Siloxanes Using the AirToxモニター
- Detects siloxanes without fragmentation alongside VOCs and ECs
- Achieves temporal resolution surpassing traditional methods
- Delivers high sensitivity and specificity for siloxanes
- Performs reliably across diverse environments in real time
Measurement of ethanol, monoterpenes, toluene, and xylene (top panel) and several cyclosiloxanes (bottom panel) over a period of a week in an industrial facility.
リソース
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