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PerkinElmer Enterprise Management (Shanghai) Co., Ltd
QSight helps protect water sources and uncover the 'invisible killer' PFAS!
Date: 2024-04-19Read: 5
PFAS， Perfluorinated and polyfluorinated compounds, these 'invisible killers', are silently polluting our water sources, posing a serious threat to the ecological environment and human health. In this war without gunpowder, liquid chromatography-mass spectrometry technology has become our capable assistant, helping to uncover these "behind the scenes black hands".
Hotspot Focus
PFAS is a general term for a series of non natural artificially synthesized organic compounds, composed of fluorine and carbon atoms. Their unique structure endows them with excellent high-temperature resistance, chemical corrosion resistance, low surface tension, and other characteristics. It has been widely applied in multiple industries. In the firefighting industry, as the main component of fire extinguishing agents, it can quickly extinguish oil fires; In the textile industry, it is used to produce waterproof and breathable outdoor clothing; In the field of food packaging, it can improve the waterproof and oil resistance of packaging materials; In addition, PFAS is also applied in various fields such as non stick pan coatings, cosmetics, and personal care products. Among them, PFOA and PFOS are members of PFAS that were discovered and utilized by humans earlier. Due to its unique chemical stability and surface activity, it quickly gained widespread application.
Due to the persistence and bioaccumulation of PFAS in the environment, it poses significant potential risks to human health and ecosystems. Therefore, monitoring and analysis of PFAS are particularly important, and liquid chromatography-mass spectrometry technology, as an efficient and sensitive analytical method, plays an important role in the analysis and detection of PFAS.Numerous relevant testing standards have also been released both domestically and internationally:
In recent years, the US EPA has released testing standards related to PFAS:
Regarding the above relevant testing standards
PerkinElmer
Launch multiple comprehensive solutions
Application Case 1
Analysis of 29 Perfluorinated Compounds
For the analysis of multiple compounds, it exhibits excellent peak shape and sensitivity in negative ion mode.
Example of ion chromatogram extraction for 29 compounds
Application Case 2
Analysis of PFOA and PFOS in Water Quality
After direct filtration, there is no need for concentration. The results of 1ng/L injection measurement are shown in the following figure, which has high sensitivity and excellent linearity.
Application Case 3
Analysis of 17 Perfluorinated Compounds in Water Quality
No SPE is required, the sample can be directly filtered and injected. The results of the injection measurement at 125ng/L are shown in the following figure, which has good sensitivity.
Due to the ubiquitous presence of this type of compound in liquid chromatography pipelines, it can cause background interference. Therefore, during the measurement, it is necessary to connect a chromatographic column as a capture column after the outlet of the pump mixer and before the injection valve of the automatic sampler.
PerkinElmer QSight liquid chromatography-mass spectrometry system
Technological advantages in response to PFAS analysis
Hardware:
1
Extremely excellent anti pollution ability
Design of Double Conical Holes:
Hot surface induced desolvation technology (HSID):
C dedicated ion source exhaust gas discharge pump:When the exhaust pump is in operation, it is powered by a power source to create negative pressure and quickly extract the exhaust gas from the ion source, preventing neutral molecules, residual pollutants, and preventing ion source pollution.
2
**Unified field detector
With ultra fast switching time between positive and negative modes, it can provide high sensitivity and result stability for the analysis of PFAS compounds in negative ion mode.
3
**Dual ion source design
It has two independent ESI and APCI ion sources, which can be freely combined without manual switching. It can be used separately or simultaneously collect ESI and APCI data. While dealing with FPAS analysis, other relevant pollutants that require analysis using APCI sources can also be determined.
software
Built in method database, one click import of compound parameters, saving method development time; High recognition retention time ion ratio display enables rapid determination of detection results.
Convenient remote diagnostic functionEngineers can perform fault diagnosis and parameter confirmation through networking at any location, ensuring quick identification of instrument faults.
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