cadmium is an interactive launcher for Google Chrome/Chromium, that allows you to select which profile to open an URL in, instead of using the last window opened.
It also allows you to open Incognito Mode, or launch in the SELinux Sandbox.
cadmium scans your Chrome/Chromium settings for profile folders and displays a dialog with buttons for every of the found profiles.
Just set whatever opens your links to use cadmium [URL] and you are done.