Monitoring and Management of POPs in Asia - Monitoring of PFCs in Environmental Water in the Asian Region

Importance of the Topic

Perfluorinated compounds such as PFOA and PFOS resist environmental degradation, accumulate in water bodies, and pose risks to human and ecological health. Monitoring these pollutants is crucial for risk assessment, regulatory compliance, and mitigation planning across Asia’s diverse aquatic systems.

Objectives and Overview of the Study

1. Develop analytical capacity for trace-level detection of perfluorinated compounds in environmental water.
2. Share findings at academic and UN platforms and foster collaboration with PFC stakeholders.
3. Establish local networks among manufacturers, users, and waste managers to support monitoring efforts.
4. Align project outcomes with the Stockholm Convention and other multilateral environmental agreements.

Methodology and Used Instrumentation

The Phase VI program (2012–2015) targeted PFOS and PFOA in surface and drinking water using ISO 25101:2009. Samples underwent solid phase extraction followed by LC-MS/MS analysis on a Shimadzu Nexera XR HPLC coupled with an LCMS-8040 triple quadrupole mass spectrometer. An impurity delay column was introduced to reduce background PFOA contamination from mobile phases and instrument components, enhancing sensitivity. An international training workshop and on-site instrument installations facilitated capacity building across ten Asian countries.

Main Results and Discussion

Routine analyses demonstrated simultaneous quantification of multiple perfluorinated sulfonates and carboxylates within a 20-minute runtime. The impurity delay method reduced background signals by over 50 percent, enabling detection limits in the low ppt range. Participating laboratories consistently reported PFOA/PFOS in rivers, tap water, and sometimes in biota, emphasizing widespread distribution. Project coordination meetings and conference presentations highlighted regional data trends and methodological refinements.

Benefits and Practical Applications of the Method

The high sensitivity and throughput of the Shimadzu UFMS series empowered laboratories to implement compliant monitoring aligned with the Stockholm Convention. Standardized procedures support environmental compliance, public health surveillance, and industrial process control.

Future Trends and Potential Applications

Advancements in ultra-fast scanning LC-MS/MS and miniaturization of sample preparation will further lower detection limits and reduce analysis time. Integration with remote sensing and data-sharing platforms can facilitate real-time environmental monitoring and predictive modeling.

Conclusion

The UNU-IAS-Shimadzu partnership successfully built analytical capabilities for PFC monitoring across Asia, delivering standardized methodologies and regional data critical for policymaking and environmental management. Continued technological innovation and network expansion will strengthen global efforts to control long-lasting pollutants.

References

• United Nations University Institute for the Advanced Study of Sustainability and Shimadzu Corporation. Monitoring Pollution in Asia: POPs Brochure. 2011.
• United Nations. Stockholm Convention on Persistent Organic Pollutants. 2009.