Arsenic in Water

Arsenic in Water

This element is found in small amounts in nature. Mostly, it occurs as the arsenides of true metals or as pyrites.

Arsenic may have valences of +3, +4 and +5. In its elemental form, it is not poisonous. Although many arsenic compounds are extremely toxic and have been used as herbicides and insecticides.

Arsenic is notorious for its toxicity to humans. Ingestion of as little as 130 mg has proved fatal.

Some aquatic organisms may concentrate arsenic although it does not appear to concentrate throughout the food chain. Concentrations of 1 mg/L of arsenic have been present in drinking water that was used for short periods of time producing no ill effects, but long term use of water containing 0.21 mg/L of arsenic has been reported to have poison effects.

With respect to lower forms of aquatic life, arsenic concentrations of 3 to 14 mg/L have not harmed may fly nymphs, and 10 to 20 mg/L have been harmless towards dragon and damsel flies.

Next Topics…


Comments are closed

...more from Dr. Gordon Snyder
Dr. Gordon Snyder on Google

Home | Privacy Policy | Customer Service | Contact Us | Links

Visa Master Card AmEx PayPal

Please visit our family of websites

Student water science projects online store online store online store

Whales Without Borders

Water filters, water test kits, water equipment

New Water Sciences Websites
Basic Water Science Topics
Student Water Kits
Photos, Videos No Fence Wetland Restoration

Scrapbook card making paper crafts online store
Urban Paper Crafter Store Map
Urban Paper Crafter Videos

Music, music composition, restore vinyl records online store
spam prevention

All our websites are different...
Website created by Gordon Snyder and hosted by:
Last updated on:

Family Friendly Website Safe Surf Sites Water Friendly Website Award Internet Rating Content Assoc. © 1998 - 2020 Gordon Snyder & Consultants, Inc., All rights reserved .