News | International
23 Mar 2018 18:19
NZCity News
NZCity CalculatorReturn to NZCity

  • Start Page
  • Personalise
  • Sport
  • Weather
  • Finance
  • Shopping
  • Jobs
  • Horoscopes
  • Lotto Results
  • Photo Gallery
  • Site Gallery
  • TVNow
  • Dating
  • SearchNZ
  • NZSearch
  • RugbyLeague
  • Make Home
  • About NZCity
  • Contact NZCity
  • Your Privacy
  • Advertising
  • Login
  • Join for Free

  •   Home > News > International

    Russian spy Sergei Skripal: How nerve agents can destroy the body in minutes

    Nerve agents have been used in chemical warfare since WWII and have been linked to a number of high-profile assassinations. Here's how they can destroy the body within minutes.

    UK police announced they believe a nerve agent was used to deliberately poison a former Russian double agent and his daughter.

    Nerve agents have been used in chemical warfare since WWII and have been linked to a number of high-profile assassinations, including in the case of North Korean ruler Kim Jong-un's exiled half brother last year, who died 20 minutes after being given a highly toxic VX nerve agent.

    Here's the effect they have on the body and whether it's possible to recover from a nerve agent attack.

    What are nerve agents?

    Nerve agents are highly poisonous chemicals that work by disrupting and preventing the nervous system from working properly, according to the US Centre for Disease Control.

    They do this by inhibiting the enzyme which orders the muscle or organ to relax, meaning the muscle is repeatedly receiving a signal to contract.

    While they are commonly referred to as nerve gases, in pure form they are colourless — and mostly odourless — liquids.

    The Organisation for the Prohibition of Chemical Weapons says they are easily dispersed, highly toxic and have rapid effects when absorbed through the skin or through the respiratory system.

    G series agents are known as non-persistent (degrade easily), while V series agents are persistent, meaning they do not degrade or wash away easily and are considered among the most toxic substances ever synthesised.

    There are four main types of nerve agents, including G and V series:

    • Sarin (GB),
    • Soman (GD)
    • Tabun (GA)
    • VX

    How are they administered?

    Nerve agents — either as a gas, aerosol or liquid — can be inhaled, absorbed through the skin or ingested (through contaminated food or liquid).

    Targeting the respiratory system is usually the fastest way to poison someone, with nerve agents administered taking longer to reach the central nervous system.

    For example, VX is a persistent nerve agent usually absorbed through the skin, but can also be ingested.

    It does not wash away easily and can remain on clothes and surfaces for long periods, which poses a risk to first responders who may also come into contact with the poison.

    What effect do they have on the body?

    People exposed to nerve agents can find it increasingly hard to breathe. Even brief exposure can kill you within minutes.

    They usually affect muscles and the central nervous system, particularly respiratory muscles, which is what causes people to die.

    "Consequently, death caused by nerve agents is a kind of death by suffocation," the Organisation for the Prohibition of Chemical Weapons says.

    A person exposed to a nerve agent would suffer poisoning and experience the following symptoms:

    • Increased production of saliva
    • A running nose
    • Sweating
    • Convulsions
    • Involuntary urination and defecation
    • Impaired night vision and short-range vision deteriorates
    • Also may be accompanied by a headache, tiredness, slurred speech, hallucinations and nausea

    Why are nerve agents a weapon of choice?

    One of the reasons why nerve agents, such as VX, may be used in assassinations is because they are persistent.

    Senior lecturer of Medicinal and Pharmaceutical Chemistry at Charles Darwin University Martin Boland writes this means they can be used in relatively confined spaces, such as an airport terminal, with less risk of obvious adverse effects on bystanders or the perpetrators.

    The victim needs to be treated almost as soon as they are exposed to prevent long-term damage, and nerve agents can be administered fairly easily and in public without sparking too much attention

    As well as being used in the attempted murder of Sergei Skripal, nerve agents were also used to kill Kim Jong-nam in Malaysia and in the assassination of a suspected traitor to Aum Shinrikyo, a Japanese cult.

    Britain has also drawn parallels between the Skripal case and the poisoning of ex-KGB agent Alexander Litvinenko, who was killed with radioactive polonium-210 in London in 2006.

    How are they made?

    The process to manufacture nerve agents involves fairly straightforward chemical techniques, but they are usually made in labs given how lethal the substance can be.

    The Organisation for the Prohibition of Chemical Weapons says the "raw materials are inexpensive and generally readily available", with the same types of compounds used in insecticides.

    Can you recover from a nerve agent attack?

    There are antidotes, but the likelihood of recovery depends on how quickly a person is able to access it.

    The armed forces in a number of countries usually have access to auto-injectors containing antidotes to nerve agents.

    © 2018 ABC Australian Broadcasting Corporation. All rights reserved

     Other International News
     23 Mar: Tariffs and tweets: This is the new world order under Donald Trump
     23 Mar: Great Pacific Garbage Patch plastic pollution dwarfs previous estimates and is 'growing exponentially'
     23 Mar: US school shooting: Legacy of Columbine High School massacre 19 years later
     23 Mar: 'Alien' mummified skeleton actually a human baby, study finds
     23 Mar: Inside National Geographic's decision to admit its racist past
     23 Mar: Prince Harry, Meghan Markle's royal wedding invitations revealed, dispatched
     23 Mar: Hepatitis A case linked to Melbourne restaurant Cumulus Inc
     Top Stories

    Thorn embraces Qld Reds' travel trouble More...

    Armed bank robbery in Whangarei More...

     Today's News

    Rugby League:
    Sharks clash is Eels' real NRL test: coach 18:05

    Rugby League:
    Seibold puts faith in NRL's baby Bunnies 18:05

    Tariffs and tweets: This is the new world order under Donald Trump 17:55

    Will Young claims he re-recorded hit single 'Leave Right Now' several times as record company thought he "sounded gay" 17:45

    Great Pacific Garbage Patch plastic pollution dwarfs previous estimates and is 'growing exponentially' 17:35

    Mixed fortunes for Triple Eight Supercars 17:25

    Dame Helen Mirren has never considered herself a sex symbol 17:15

    Armed bank robbery in Whangarei 16:55

    Lindsay Lohan has become the new spokesperson for legal directory 16:45

    Law and Order:
    Lou Vincent escapes conviction 16:35

     News Search

    Power Search

    © 2018 New Zealand City Ltd