William Lipps

What Are Emerging Contaminants and Why Are We Concerned?
Friday, April 05, 2019
The term “compounds of emerging concern” (CEC) is used to identify chemical contaminants that have no regulatory standard, have been found in environmental samples, and have potentially adverse ... read more
Measuring Organic Carbon: A Brief History and Discussion of Methodologies
Monday, May 02, 2016
Total organic carbon (TOC) is a rapid method that analyzes for organic carbon and expresses the result as the amount of carbon found. read more
Analysis of Things the Way They Are Not
Friday, August 07, 2015
The U.S. EPA is commissioned by the Safe Drinking Water Act and the Clean Water Act to develop routine methods for the analysis of drinking water and wastewater, respectively. read more
Truly Rapid, Sensitive Analysis of Hundreds of Components by Modern GC/MS Analyzers
Tuesday, May 26, 2015
Gas chromatography/mass spectrometry has made it possible to run large numbers of components in a single sample injection. The GC/MS methods introduced in the late 1960s and early 1970s for ... read more
Total Nitrogen in Water by High-Temperature Catalytic Combustion and Chemiluminescence Detection
Tuesday, February 17, 2015
There are currently no promulgated U.S. EPA methods for the determination of total nitrogen in ambient water and wastewater. There are approved methods for the determination of inorganic nitrogen (NO3... read more