OPCW 69d ago

Learn how OPCW inspectors use advanced tools and technologies to detect toxic chemicals and verify compliance with the Chemical Weapons Convention. From handheld detectors and air‑sampling devices to simple but effective colour‑change paper, OPCW inspectors rely on a range of methods to identify nerve, blister, blood, and choking agents in real time—supporting international efforts to eliminate chemical weapons. The OPCW is the Organisation for the Prohibition of Chemical Weapons. With 193 Member States and a Technical Secretariat, the OPCW is responsible for implementing the Chemical Weapons Convention and supporting a world free of chemical weapons. Learn more: https://www.opcw.org/ Chemical Weapons Convention – https://www.opcw.org/chemical-weapons-convention What’s in this video: 00:00 – How OPCW inspectors detect toxic chemicals 00:06 – Using multiple technologies and tools 00:10 – Ion mobility spectrometry: scanning the air for chemical agents 00:16 – Real‑time detection with built‑in reference libraries 00:23 – Flame atomic emission spectroscopy explained 00:33 – Detecting unknown or modified agents 00:41 – Collecting solid and liquid samples for analysis 00:51 – Coloured detection paper: simple but effective 01:01 – Supporting verification and a world free of chemical weapons ________________________________________ VIDEO TRANSCRIPT OPCW inspectors use handheld detectors to check for toxic chemicals and determine where to take a sample. Multiple technologies and tools are used. Here are some of them. Ion mobility spectrometry is used to scan the air for nerve, blister, blood, or choking agents. Tools like the LCD use this technology to compare what is found in the air to a built‑in library in real time. Flame atomic emission spectroscopy is used to detect vaporous elements commonly found in chemical warfare agents, including sulphur, phosphorus, arsenic, and nitrogen. The AP4C and other tools use this technology to detect unknown or modified agents, as they work on vapours. Scraper tools like the SP4E are used to collect solid or liquid samples and then convert them into vapours for analysis through the AP4C. And then there’s coloured paper—simple but effective. It changes colour when it touches liquid G‑ or V‑class nerve agents or blister agents, giving a fast signal. Each of these tools plays a critical role in helping the OPCW verify compliance with the Chemical Weapons Convention and support a world free of chemical weapons.