ContrAA 800
Total Organic Fluorine (TOF)
Fluorine Analysis
Per- and polyfluoroalkyl substances (PFAS) are a large class of synthetic chemicals that present numerous analytical challenges, including their widespread presence in a variety of environmental samples. Two of the most common types (PFOS and PFOA) were phased out of production in the United States (US) in 2002 and 2015 respectively, but are still present in some imported products. In the US, PFAS may contaminate public drinking-water systems that serve an estimated 19 million people. The United States Environmental Protection Agency (EPA) is continuing to aggressively implement their PFAS Action Plan – the most comprehensive cross-agency plan ever to address an emerging chemical of concern. The EPA has established a non-enforceable health advisory level of 70 parts per trillion (ppt) for the sum of PFOA and PFOS. EPA is developing a potential rapid screening tool to identify total PFAS presence and absence in 2021. This eventual standard operating procedure will be used to quantify Total Organic Florine (TOF).
With the increasing concern in regards to public health and environmental monitoring, there is a high demand for a simple, reliable and rapid TOF analysis method. Currently there are no direct spectroscopic methods (e.g. AAS, ICP-OES/-MS) available for total Fluorine analysis. It’s challenging to measure Fluorine by common AAS and ICP-OES since its resonance lines are located in the VUV spectral range below 100 nm. Fluorine can’t be ionized in the Argon plasma for ICP-MS because ionization potential is too high. So far, F determination methods are mainly non-spectroscopic techniques, such as ion chromatography (IC) and Ion selective electrode (ISE). While traditional detection of F- by ISE or IC cause species-selective, severe matrix effects, they also often have a high risk of error and a complex sample preparation time which tends to also be prone to errors.
New and easy solution: contrAA 800 high-resolution atomic absorption spectrometry!
- The contrAA 800 high-resolution atomic absorption spectrometry (HR-CS AAS), provides many unique features compared to conventional atomic absorption spectrometry, such as gap-free access to 185 to 900 nm wavelength range, high spectral resolution, and superior background correction.
- With the advantages of HR-CS AAS, non-metals like Fluorine can be analyzed via molecular absorptions. All Fluorine species are in-situ conversed into a target molecule (e.g. CaF, GaF, InF) during the furnace program and are detected by the target molecule’s wavelength using the contrAA 800.
- The sample analysis is about 3.5 minutes/sample (1 replicate). This method requires very minimal effort from the operators. The limit of detection is in the low ppb range without enrichment. This method is matrix-independent and almost no matrix effect shows for most sample matrices.
Fluorine Applications
A Novel Method for the Fast, Sensitive, and Simple Analysis of Total Fluorine in Wastewater
In this application note, we focus on improving the performance of Total Florine (TF) analysis in wastewater. With regard to the determination of a sum parameter of fluorinated compounds, a species-unspecific response of high-resolution continuum source graphite furnace molecular absorption spectrometry (HR-CS GF MAS) was developed. Learn how this method was developed in the application note!
Determination of EOF in Surface Water With Molecular Absorption Spectrometry
Learn about the determination of extractable organically bound fluorine (EOF) in surface water with molecular absorption spectrometry in our application note.
Fluorine Analysis Easy to Say, And Easy to Do!
For the first time, High-Resolution Continuum Source AAS technology (HR-CS AAS) also allows the determination of non-metals with an AAS instrument, the contrAA.
Product Details
High Resolution Continuum Source AAS Systems
The contrAA 800 series of multielement analyzers connects the best of two worlds, featuring the high cost-effectiveness and robustness of classical atomic absorption spectrometry (AAS) alongside the flexibility and sample throughput of ICP techniques.
High precision, rapid processes, and excellent ease of use all combine for a new level of AAS efficiency.
- Simple and robust routine analysis made possible by fast-sequential multielement analysis using flame techniques
- Visualization of high-definition absorption spectra in both 2D and 3D for interference-free analysis
- Cost-efficient trace analysis using graphite furnace AAS for recurring measurement tasks
- Unique determination of phosphorus, sulfur, halogens as well as other molecular absorptions
- Direct solids analysis using graphite furnace technology
- Improved detection of arsenic, selenium, and mercury using hydride technology in flame and graphite furnace modes
Complete flexibility to meet your multielement analysis needs
Expand your analytical application range, improve precision, and achieve higher sample throughput at a lower cost per sample.
- Fast multielement analysis - use of a xenon lamp as a continuous source for all elements
- Interference-free analysis - clear separation of analysis lines thanks to high-resolution optics and advanced correction algorithms for complex spectral interferences
- Flexible method development - 3D visualization of absorption spectra
- High detection strength - unique light intensity and sensitivity for the detection of metals, non-metals and molecules
- Extended working range - powerful analysis methods allow you to adapt the dynamic range to the concentrations expected in the sample, to measure ultratrace elements, and other features in the same sample - using one methodology
- High matrix tolerance - robust sample feeding and spectrometer design that’s upgradeable for fully automatic direct solid analysis
Poster Session
Fluorine Analysis with solid AA® CS – A New Solution to an Old Challenge
Currently there are no direct spectroscopic methods (e.g. AAS, ICP-OES/-MS) available for total Fluorine analysis. While traditional detection of F- by ISE or IC cause species-selective, severe matrix effects often have a high risk of error and a complex sample preparation time which tends to also be prone to errors. Take a look at our poster to see a simple, fast and direct method for total Fluorine analysis using solid AA® CS.
Videos
TOF Analysis of Wastewater by HR-CS MA
The determination of single compounds is time-consuming and cost-intensive. Therefore, a sensitive screening method of fluorinated organic compounds as sum parameter enables a fast monitoring of the environmental pollution. The presented method of the quantitative can determine TOF as sum parameter in waste waters. TOF is evaluated by the molecular absorption of gallium monofluoride (GaF) using Graphite Furnace HR-CS MAS. The boiling points of different Florine species play an important role of TOF analysis. Furnace program optimization and calibration strategy are fully discussed for achieving the species-unspecific response of different fluorinated organic compounds.
Atomic Absorption. Redefined. — AAS contrAA® Series
Watch this video to get to know the only commercially available instruments for High-Resolution Continuum Source AAS (HR-CS AAS). As a link between standard AAS instruments and ICP-OES the atomic absorption spectrometers of the contrAA® series combine the best of two worlds: rapid sequential and simultaneous multi-element analysis, ease of handling and manageable costs.
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