Under Development: Standard Methods 4500 N Part F – Persulfate Digestion and Colorimetry using 2,6-DimethylphenolCollaborative Efforts to Improve Environmental Monitoring
Oral Presentation
Prepared by C. Prokisch
MACHEREY-NAGEL, Valencienner Strasse 11, Dueren, NRW, 52355, Germany
Contact Information: [email protected]; 020-421-9690
ABSTRACT
“Nutrient pollution is one of America´s most widespread, costly and challenging environmental problems” (as seen on www.epa.gov). Nitrogen is an important nutrient and consequently, total nitrogen may become an EPA regulated parameter in the future.
A Joint Task Group develops a Standard Method to manually determine total nitrogen in water using alkaline persulfate digestion followed by nitrate detection using 2,6-Dimethylphenol and photometric detection. In contrast to other already available methods, this method will allow utility laboratories the ability to analyze total nitrogen in water samples in one validated method that includes QC criteria rather than combining different methods with limited validation data. To achieve this, the group intends to perform a multiple laboratory study.
The group welcomes volunteers that participate in the study or contribute to the development of the standard.
