For low-level detection, the Astoria and Astoria2 systems use
micro-Segmented Flow Analysis thereby ensuring accurate and repeatable analyses in even the most difficult
matrices.
Q: Why Choose Astoria-Pacific micro-Segmented
Flow Analysis (micro-SFA) for Low-Level Ammonia in
Seawater and Estuarine Samples?
Astoria-Pacific’s micro-SFA systems offer an optimal solution for scientists
and laboratory managers measuring low-level ammonia in complex
matrices such as seawater and estuarine samples.
A: When Reliability, Certainty and Ease-of-Use
are Important in your Work
Preferred Worldwide
Astoria-Pacific systems are widely used in global monitoring programs and
research institutions, including NOAA, CSIRO, and major oceanographic labs.
Their reliability and precision have made them a go-to tool for researchers
working with marine and brackish waters³.
Conclusion
For laboratories prioritising accurate low-level ammonia quantification in
challenging matrices like seawater, Astoria-Pacific’s micro-SFA offers clear
advantages over FIA systems such as the Lachat Quikchem 8500 and other
currently available FIA systems.
The combination of low detection limits, reduced reagent use, superior
reliability, and ease of use makes it the preferred choice for environmental
and marine chemistry labs.
References
1. Zhang, J.-Z., et al. (2000). Determination of ammonia in seawater by flow injection analysis with fluorometric
detection. Talanta, 51(3), 507–513.
2. Pai, S.-C., et al. (2001). Automated spectrophotometric determination of ammonia in seawater. Analytica Chimica
Acta, 434(2), 305–312.
3. Hydes, D. J., et al. (2010). Data quality in chemical oceanography: Segmented flow analysis and nutrient data.
Limnology and Oceanography: Methods, 8(2), 39–54.