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Methods
Biological & Microbiological
- Biological Methods and Manual Development
NERL-Cincinnati
scientists serve as the EPA's scientific lead for the following stream and source
monitoring indicators: fish, macroinvertebrates, periphyton, zooplankton, functional
ecosystem indicators, water and sediment toxicity and fish tissue contaminants. As
part of their indicator lead responsibilities NERL-Cincinnati scientists prepare and
update field and laboratory protocol and methods manuals for these indicators which can be found at this site.
- Microbiological Methods
Online EPA methods related to bacteria, viruses, and protozoans can be accessed at this site which is maintained by staff microbiologists.
Chemical
- Analytical Methods (Recent)
NERL has historically been one of the most active EPA laboratories conducting drinking water methods research. This site contains online analytical methods in PDF format for drinking water and marine water.
- Analytical Methods (1988-95)
This Manual of Manuals site contains summaries and ordering information for eight analytical chemistry methods manuals published between 1988 and 1995. Many of these methods are mandatory for drinking water utilities under Safe Drinking Water Regulations and are specified in 40 CFR Part 141 by number.
- Characterization and Monitoring
develops, evaluates, applies, and validates technologies and approaches for
cost-effective monitoring and assessment of surface and subsurface environments. This group's research and technical
support address questions about monitoring for site characterization, pollution prevention, the detection
and assessment of contaminants, and decision support systems for site characterization and the evaluation of exposure.
- Speciation and Detection of Organotins (2003)
This method, developed by NERL-ESD for OSW (Office of Solid Waste), covers the use of solid-phase extraction (SPE) discs, solvent extractions (for biological tissues), and micro-liquid chromatography coupled with electrospray ion trap/mass spectrometry (ES-ITMS) for the determination of organotins (as the cation) in waters and biological tissues. This is the first EPA-approved method for organotins. For more information regarding this method please contact: Tammy Jones-Lepp, NERL-ESD/ECB, 702-798-2144
- Vacuum Distillation
is an area that has been studied as a means to extract volatile chemicals from most media.
This approach was initially investigated for a group of analytes that are commonly known as volatile organic compounds
(VOCs) or sometimes as volatile organic analytes (VOAs). The VOCs include some of the most common organic compounds that
are used by industry and include common solvents and petroleum constituents.
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Speciation of Mercury in Soils by Sequential Extraction
(PDF format)
Poster presentation.
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