PPT-Role of Hydrogeochemistry in the release of arsenic in 24 Parganas districts, West Bengal

School of Environmental Sciences Jawaharlal Nehru University Presented By Neha Singh Supervisor Prof Saumitra Mukherjee Introduction Groundwater is the major source of freshwater in many parts of the world for meeting the requirements of domestic and agricultural purposes. 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 CEPI score assessed by CPCB in 2011. In areas namely CEPI score is either above 80 or is above 70 and showing either increasing trend or no change as compared to values observed in 2011. 5. In 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. Decedent History. 11/15: To ER with nausea, vomiting, diarrhea, 2 hours after bowling with “friends”. Drank one beer in bowling alley that “tasted funny” and ate a hot dog. Admitted to OSH . . 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”. PHM142 . Fall 2019. Coordinator. : Jeffrey Henderson. Arsenic: Sources and Human Exposure. Natural Sources. Arsenic is most abundant in the earth’s crust, usually in the form of arsenopyrite.. However, small amounts of arsenic are present in the soil, air, and groundwater.. 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. Preliminary Characterization of the Distribution of Arsenic in Southern Carson Valley. Angela Paul. USGS, Nevada Water Science Center. Douglas County Water Purveyors Meeting. September 16, 2019. PROBLEM. 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.. It combines with other metals and chemicals to make minerals in ores.. Features of the System. Single/Multi Lot Auctions. Auto Extension which is configurable as a parameter. Elapse time in minutes which is again configurable. Templates available in case of Multi Lot Auctions. 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 ( on't drink your water or use it to make drinkslike coffee, tea, juice, or infant formula. ou can use your water to cook and other uses.If your result is above 50 ug/L or 0.05 mg/L on't d 257 S.No State LF endemic district 1. Andhra Pradesh (10) Chittoor , East Godavari, Guntur, Krishna, Nellore , Prakasham, Srikakulam, Visakhapatnam, Vizianagaram, West Godavari 2. Telangana (7) Kari