PPT-Analysis of arsenic in groundwater

by Joe Bloggs and T eresa Green Introduction Arsenic is a metalloid that can be found in the environment in rocks soil and water It occurs naturally as the minerals arsenopyrite FeAsS. Intake of inorganic arsenic ov er a long period can lead to chronic arsenic poisoni ng arsenicosis Effects whic h can take years to develop depending on the level of exposure incl ude skin lesions peripheral neuropathy gastrointestinal symptoms diab Arsenic concentrations vary in accordance with geographic location When arsenic levels are found to be too high at a specific location it may be necessary to treat drinking water to remove it Arsenic usually exists in two different forms or valences Human Health and the Environment. Introduction to Arsenic. Good Element – Bad Chemistry. Arsenic. Good Element – Bad Chemistry. What is . Arsenic. ?. Arsenic is an element which occurs naturally in the environment.. An Update. Mary L. Barrett, Ph.D.. Consulting Geologist & Oilfield Historian. Shreveport, LA. mbarrett@centenary.edu. 22. nd. International Petroleum Environmental Conference. November 17-19, 2015---Denver, CO. Adrian . Bumstead. , Xiao Qi Li, Jessica So, Jin (Donna) Yang. PHM142 Fall . 2015. Instructor: Dr. Jeffrey Henderson. Arsenic (As). Toxic metalloid. Arsenite. (. As. 2. O. 3. ; As . III). Arsenate. bangladesh. By: Lauren Jones & David . Pinigis. Where can we find Arsenic?. Arsenic can be found all over the world both from human activities and found in the earth crust.. West Bengal and Bangladesh have a current problem with Arsenic in their water tube wells. . Melissa Schaar. Water Quality Standards Specialist . Water Quality Planning Bureau. 406-444-5226. mschaar@mt.gov. Presentation Outline. B. ackground information. The process – “Demonstration of Natural”. saturates . pore spaces of . bedrock.. The rate of movement of groundwater is gravity driven, varying between 0.6 inches per day (in sandstones) to several inches per year (in . granites. ). The source of groundwater is rain and melt water infiltrating and percolating through fractures/pores in soil and . Arsenic occurs naturally. Drinking water. Industrial by-products. Smelting. Coal Emissions. Treated wood. Pesticides or herbicides. Food. Juices, Rice, Seafood. Forms of Arsenic. Most common and stable. Arsenic is a well known undesirable and harmful impurity, present in medicinal substances. All pharmacopoeias prescribe a limit test for it.. The . pharmacopoeial. method is known as . Gutzeit. Test.. Arsenic Arsenic is a naturally occurring metal found in the earth’s crust. It occurs in various forms: elemental (metallic) arsenic; combined with other elements such as oxygen, chlorine, sulfur ( Preserving Water . Quality: Arsenic and Chromium Threats. Scott Fendorf. Stanford University. Surface . Water:Sediment. . Ratio, . 1000:1. Groundwater:Sediment. . Ratio, 1:1000 .  . Water Quality Problems. Andrea L. Foster, PhD. U.S. Geological Survey GMEG. Menlo Park, CA. Arsenic is an element of concern in mined gold deposits around the world. Don Pedro . Harvard/Jamestown. Kelly/Rand (Au/Ag). Ruth Mine (Cu). Steven H. Emerman. 1. , . Janae R. Nelson. 1. , . J. Kade . Carlson. 1. Tracy Kemp Anderson. 1. , . Anusha Sharma. 2. , Basanta . Raj Adhikari. 2. 1. Department of Earth Science, Utah . Valley University.