Better sleuthing through chemistry

New tool can tell where, when or how a chemical warfare agent originated

SAN FRANCISCO — Finding out whodunit in chemical warfare cases may be aided by scientists focused on the howdunit.

Researchers have developed a technique to ascertain the chemical fingerprint of compounds such as mustard gas, rat poison and nerve agents such as VX. Figuring out the details of how these compounds were created in the first place could provide vital clues to law enforcement agencies aiming to catch chemical warfare criminals and help guide first responders as they gather evidence.