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What is Hydrogen Cyanide Gas?

A colourless and often odourless gas that kills in seconds if breathed.  It was used in WWII in death camp Gas chambers and called Zyklon B. If this stuff gets into your home and it is breathed you don't stand a chance especially children.
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Hydrogen Cyanide is common in landfill sites.  It is a chemical that does not occur naturally in amounts that can kill.  It travels in water following the inverse square law, this means it had to exist nearby.  Water in floods acts as a vehicle to carry the cyanide.  The multitude of material amd chemicals dumped in unregulated landfill renders them ticking time bombs from migrating gases with increasing risks the more climate changes and floodwater contacts it and people.    Cyanide can also harm by contact with the soil and by travelling through the ground.  Denman Drive just a couple of miles from Zane's home in the same borough was remediated from cyanide by Spelthorne BC only a few years ago.  The site is also a former gravel pit, but unlike the land near Zane's home its status as unregulated landfill was not denied see https://www.spelthorne.gov.uk/article/8616/Public-Open-Space-Denman-Drive-Ashford    Yet another nearby site
( m.yourlocalguardian.co.uk/news/12882629.Contamination_fears_for_Waterside_Drive_to_be_re_examined/ ) similarly dumped has migrating gases hazardous to health these problems are national.    

Cyanide Compounds

Metals coatings of cadmium, iron, gold, and zinc often use cyanide  compounds.  Cyanide is typically found complexed with plating metals, or as sodium cyanide or potassium cyanide.  Cyanide exposure pathways include inhalation, ingestion, or absorption  through
skin or mucous membranes.  Most cyanides are acutely poisonous.  Overexposure interferes with the operation of the metabolic system and  can cause rapid death.  Cyanide is not bio accumulated or stored in receptors being humans or animals. 

People who live near hazardous waste sites that contain cyanide may be exposed to higher amounts of cyanide than the general population.

Cyanide is used or produced in various occupational settings where activities include electroplating, some metal mining processes, metallurgy, metal cleaning, certain pesticide applications, tanning, photography and photoengraving, firefighting, and gas works operations. Cyanide also is used in some dye and pharmaceutical industries.

Effects and risks
Cyanide has been found to have very high acute (e.g. single dose)  toxicity to land animals and is also toxic to plants and  certain micro-organisms. It can produce chronic toxicity following  long-term or repeat dose exposure, such as adverse impacts on egg  production.


Once in the bloodstream, cyanide rapidly forms a stable complex with  enzymes involved in cellular respiration, resulting in cellular  asphyxiation. The lack of available oxygen leads to lactate accumulating in the blood. The combined effect is depression of the central nervous  system (CNS) that can result in respiratory arrest and death. A range of other enzymes and biological systems, other than the CNS, are also  affected by cyanide.

Is there a medical test to determine whether I have been exposed to cyanide?
Blood and urine levels of cyanide and thiocyanate can be measured, and small amounts of these compounds are always detectable in blood and urine because of natural processes. After cyanide poisoning, increased blood levels of cyanide and thiocyanate are detectable. Harmful effects can occur when blood levels of cyanide are higher than 0.05 parts per million (ppm), but some effects can occur at lower levels. Tissue levels of cyanide can be measured if cyanide poisoning is suspected. However, cyanide and thiocyanate are cleared rapidly from the body in urine or exhaled breath; for that reason, blood measurements are only useful for detecting recent exposure. A bitter, almond-like odour in the breath may alert a physician that a person was exposed to cyanide, but this is not always found. In general, if cyanide exposure is suspected, treatment should be started immediately without waiting for the results of blood cyanide measurements.


Antidote: There are various Sodium Thiosulfate, Sodium Nitrate, Amyl Nitrite, and Hydroxocobolamine

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