Figure 2.
Metal contents in TBT. (A–F) Concentrations of Cr, Ni, Cd, Pb, Cu, and Zn of the three types of TBT, respectively. The black solid diamond in the figure represented the outlier.
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.