False
Download Learnerz IAS app from the Play Store now! Download

$show=search/label/May%202022

 


Heavy metal contaminants UPSC NOTE

 Why in news

  • Indian Institute of Science (IISc) researchers have developed a novel remediation process for removing heavy metal contaminants such as arsenic from groundwater

  • The three-step method, which is patent-pending, also ensures that the removed heavy metals are disposed of in an environment-friendly and sustainable manner, instead of sending untreated heavy metal-rich sludge to landfills from where they can potentially re-enter groundwater

Heavy metal contaminants

  • Heavy metals are generally defined as metals with relatively high densities, atomic weights, or atomic numbers

  • Heavy metals normally occur in nature and are essential to life but can become toxic through accumulation in organisms

  • Arsenic, cadmium, chromium, copper, nickel, lead and mercury are the most common heavy metals which can pollute the environment. 

  • Mercury, lead and cadmium are of greatest concern because of their ability to travel long distances in the atmosphere

  • Sources of heavy metals include mining, industrial production (foundries, smelters, oil refineries, petrochemical plants, pesticide production, chemical industry), untreated sewage sludge and diffuse sources such as metal piping, traffic and combustion by-products from coal-burning power stations

  • Mercury exposure can harm the brain, heart, kidneys, lungs, and immune system of people of all ages

  • Mercury accumulation in fish may harm the fish and other animals that consume them, thus affecting the ecosystem

  • Lead may, cause neurodevelopmental effects in children, even at low levels of exposure. 

  • Other effects include cardiovascular, renal, gastrointestinal, hematological and reproductive effects

  • Cadmium is toxic to humans and exposure can cause pulmonary irritation, kidney disease, bone weakness and possibly lung, prostate, and kidney cancer. 

  • Food and cigarette smoke are the largest potential sources of cadmium exposure for the general population

COMMENTS

Name

Amritsar,1,April 2024,301,Art & Culture,1,August 2023,251,Courses,7,Daily Current Affairs,48,December 2023,189,Disaster Management,2,Environment and Ecology,193,February 2024,228,Foundation Course,1,GDP,1,GEMS Club,1,GEMS Plus,1,Geography,191,Govt Schemes,2,GS 2,1,GS1,6,GS2,68,GS3,26,GST,1,History,11,Home,3,IAS Booklist,1,Important News,71,Indian Economy,173,Indian History,10,Indian Polity,202,International Organisation,12,International Relations,143,Invasive Plant,1,January 2024,240,July 2023,281,July 2024,230,June 2022,6,June 2023,268,June 2024,324,March 2024,238,May 2022,17,May 2024,330,Mentorship,2,November 2023,169,October 2023,203,Places in News,2,Science & Technology,135,Science and Technology,95,September 2023,205,UPSC CSE,111,
ltr
item
Learnerz IAS | Concept oriented UPSC Classes in Malayalam: Heavy metal contaminants UPSC NOTE
Heavy metal contaminants UPSC NOTE
https://lh7-us.googleusercontent.com/slidesz/AGV_vUeItZnrD6nOffTLR2Jpw74agRBszXM4F16vr5ABluGlfDdP0iWaCj2_qLD7YGcKhIJwrXPRgEKAh3Sxvfb7qx13y7e3LqsiJbxixFCoLtbesrT2ykWSYbV2wIbn1FZ7Oh4b6-aSBqjDnz-OxooKiTpNu4ame_VriiM3Aclj3wlHog=s2048?key=aCr1E3XH1Xi-csM4Z8k11A
https://lh7-us.googleusercontent.com/slidesz/AGV_vUeItZnrD6nOffTLR2Jpw74agRBszXM4F16vr5ABluGlfDdP0iWaCj2_qLD7YGcKhIJwrXPRgEKAh3Sxvfb7qx13y7e3LqsiJbxixFCoLtbesrT2ykWSYbV2wIbn1FZ7Oh4b6-aSBqjDnz-OxooKiTpNu4ame_VriiM3Aclj3wlHog=s72-c?key=aCr1E3XH1Xi-csM4Z8k11A
Learnerz IAS | Concept oriented UPSC Classes in Malayalam
https://www.learnerz.in/2024/06/heavy-metal-contaminants-upsc-note.html
https://www.learnerz.in/
https://www.learnerz.in/
https://www.learnerz.in/2024/06/heavy-metal-contaminants-upsc-note.html
true
4761292069385420868
UTF-8
Loaded All Posts Not found any posts VIEW ALL Readmore Reply Cancel reply Delete By Home PAGES POSTS View All RECOMMENDED FOR YOU LABEL ARCHIVE SEARCH ALL POSTS Not found any post match with your request Back Home Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sun Mon Tue Wed Thu Fri Sat January February March April May June July August September October November December Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec just now 1 minute ago $$1$$ minutes ago 1 hour ago $$1$$ hours ago Yesterday $$1$$ days ago $$1$$ weeks ago more than 5 weeks ago Followers Follow THIS PREMIUM CONTENT IS LOCKED STEP 1: Share to a social network STEP 2: Click the link on your social network Copy All Code Select All Code All codes were copied to your clipboard Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy Table of Content