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ARSENIC COMES FROM ROCK MINERALS AND METAL REFINING
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OKAY BACK TO THE CHEMISTRY LAB ⚗️
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AN ELEMENT FOUND IN ROCK 🪨
Arsenic Is A Chemical Element
Chemists Classify Arsenic As A Metalloid
Metallic Arsenic Is Bright And Brittle
The World Health Organization Calls Arsenic Part Of Earth's Crust
It Is Widely Distributed In Air Water And Land
A US Health Agency Calls Arsenic A Naturally Occurring Element
Arsenic Is A Natural Part Of Rocks That Contain Copper Or Lead
A Small Amount Of Arsenic Is Found In Its Native State
Most Arsenic Is Found In Minerals
The Most Common Arsenic Mineral Is Arsenopyrite
Others Include Realgar Orpiment And Enargite
Orpiment Is A Historical Yellow Pigment
Its Greek Name Was Arsenikon
The Name Arsenic Is Thought To Come From That Greek Word
Another Account Traces It To A Persian Word For Orpiment
The Greeks Apparently Borrowed That Persian Term
Arsenic In Soil May Enter The Air On Wind Blown Dust
Runoff And Leaching May Put Arsenic Into Water
Rain And Snow Remove Arsenic Dust From The Air
Groundwater In Several Countries Has High Natural Arsenic Levels
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INORGANIC AND ORGANIC ARSENIC 🦐
Arsenic Compounds Come In Two Groups
In The Environment Arsenic Combines With Oxygen Chlorine And Sulfur
Those Combinations Are Inorganic Arsenic Compounds
In Animals And Plants Arsenic Combines With Carbon And Hydrogen
Animals And Plants Make Organic Arsenic Compounds This Way
Inorganic Arsenic Compounds Include Those Found In Water
Organic Arsenic Compounds Include Those Found In Seafood
The WHO Calls Inorganic Arsenic Highly Toxic
It Calls Organic Compounds Less Harmful To Health
Seafood Arsenic Is Mostly The Less Toxic Organic Form
Fish And Shellfish Can Accumulate Arsenic
Most Of That Arsenic Is An Organic Form Called Arsenobetaine
Arsenobetaine Is Much Less Harmful
Prawns Contain Quite High Levels Of Arsenic
Prawn Arsenic Takes An Organoarsenic Form
Arsenic Also Moves Between Air Water And Soil
Many Common Arsenic Compounds Can Dissolve In Water
Most Arsenic In Water Will Ultimately End Up In Soil Or Sediment
Arsenic Cannot Be Destroyed In The Environment
It Can Only Change Its Form
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HOW ARSENIC IS USED AND PRODUCED 🏭
Arsenic Is Added To Metals As An Alloying Agent
It Is Also Used In Processing Glass And Pigments And Textiles
Paper And Metal Adhesive Makers Use It In Processing Too
So Do Wood Preservative And Ammunition Makers
Arsenic Is Used In Semiconductors Such As Gallium Arsenide
A US Health Agency Says Inorganic Arsenic Mainly Preserves Wood
Copper Chromated Arsenate Is Called CCA
CCA Is Used To Make Pressure Treated Lumber
In The United States CCA Is No Longer Used For Residential Uses
Industrial Uses Of CCA Continue In The United States
Organic Arsenic Compounds Are Used As Pesticides
The Same Agency Places That Use Mainly On Cotton Fields And Orchards
Arsenic Compounds Are Sometimes Used As Rat Poisons And Insecticides
Their Use Is Strictly Controlled
Most Arsenic Is Produced As A Byproduct Of Copper And Lead Refining
Zones Of Intensive Mining Can Release Arsenic Into Water Or Air
Rock And Soil Are Natural Sources Of Arsenic
Refining And Mining Are Human Activities That Release It
So Arsenic Comes From Rock Minerals And From Metal Refining
