Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Peak area profiles for polymeric surfactants present in ambient Bay grab samples and WWTP effluent samples. Each graph is plotted with various chain lengths for each class of ethoxylates on the x-axis and with measured peak areas for each chain length on the y-axis. NR = Napa River, SLB = San Leandro Bay, CC = Coyote Creek.
