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.
Visual calibration curve was generated for semi-quantitative Co(II) determination (top). Co(II) calibration curve was produced in the range of 0.010–0.080 mM by analyzing the green intensity of the color change on the detection zone (bottom).
