";s:4:"text";s:21969:"According to recent study, arsenic contamination in paddy is rising from ground water in West Bengal. UPSC Exam Details UPSC Exam Notification ... Arsenic contamination is a serious problem in the tubewell dug areas of the Gangetic delta. Chronic arsenic poisoning causes melanosis and keratosis (dark spots on the upper chest, back and arms are known as melanosis. Its concentration varies with rice variety and stage in crop cycle. Search Here. Arsenic is a natural component in the earth’s crust. Arsenic contamination of groundwater is widespread and there are a number of regions where arsenic contamination of drinking-water is significant. It is now recognized that at least 140 million people in 50 countries have been drinking water containing arsenic at levels above the WHO provisional guideline value of 10 μg/L (4). From UPSC perspective, the following things are important : Prelims level : Arsenic contamination and bioremediation. Samples from 101 stations had two metal contaminations and 6 stations had three metal contamination. Biological magnification and eutrophication. Arsenic-based pesticides are the best examples of agricultural applications of arsenic. The skin hardens due to the accumulation of arsenic in the blood. After food, shelter is the most important need of man. Some substances may pose a health threat if consumed in excessive quantities; others may … Get the latest news analysis for UPSC exam: Modi, Gotabaya speak ahead of Geneva vote; Pollution linked to virus spread: Vardhan; Gregarious bamboo flowering in Wayanad poses threat; Framework for testing water launched WHO's Guideline Value for arsenic in drinking water is 0.01 mg /litre. In India and Bangladesh (Ganges Delta), millions of people are exposed to groundwater contaminated with high levels of arsenic, a highly toxic and dangerous pollutant. Arsenic contamination: Arsenic is naturally present at high levels in the groundwater of a number of countries. Fluoride: Fluoride is the simplest anion of fluorine. Its salts and minerals are important chemical reagents and industrial chemicals, mainly used in the production of hydrogen fluoride for fluorocarbons. Studies have revealed that historic mining practices in the upper Macleay catchment have caused significant arsenic and antimony contamination of soil and in-stream sediments, from Hillgrove to the Pacific Ocean – a distance of more than 300 kilometres. For Mains: Increasing arsenic contamination- issues, concerns, WHO guidelines. Wednesday, December 4, 2019. Arsenic compounds can be used to make special glass and preserve wood. As contamination of groundwater, poses a serious risk to human health. Today In this article I want to walk you through the complete Environment syllabus for UPSC Prelims and Mains Exam. Groundwater contamination with arsenic is very common in areas where it is present. It is highly toxic in its inorganic form. Control Measures. Arsenic Contamination: Arsenic Contamination through natural (geogenic) and anthropogenic sources is a serious threat to humans all over the world. Topics covered: Conservation and water pollution. Interestingly, none of the sites registered arsenic contamination in excess of the prescribed safe limits. 26 March 2021: Daily Current Affairs for UPSC Exam 1) Why no decision on list sent by Collegium, SC asks government. Arsenic contamination of groundwater in different parts of the world is an outcome of natural and/or anthropogenic sources, leading to adverse effects on human health and ecosystem. The most common contaminant in 156 sampled sites was iron with levels above safe limits. arsenic contaminated ground water is used for drinking, irrigation of agricultural fields to grow different food crops and vegetables. About one third of the arsenic in the atmosphere comes from natural sources, such as volcanoes, and the rest comes from man-made sources. Environment deterministic approach (where environment determines the relationship between man and environment) with clearly highlighted the need for shelter due to extremes. Arsenic contamination of groundwater is widespread and there are a number of regions where arsenic contamination of drinking-water is significant. Treatment of sewage water and industrial effluents should be done before releasing them into water bodies. Extent of Groundwater Contamination in India: Arsenic: West Bengal, … Arsenic contamination in groundwater India. Why in News? Search Here. Arsenic and iron in water - UPSC Current Affairs Insight. Arsenic contamination. The occurrence of Arsenic in groundwater was first reported in 1980 in West Bengal in India. According to data tabled by the Ministry of Jal Shakti, 3.22 per cent of rural habitations across all states and UTs, accounting for 3.73 per cent of the population, were consuming drinking water with quality issues. It is highly toxic in its inorganic form. Muktoshri- Arsenic-Resistant rice. Around 110 millions of those peoples live in 10 countries in South and South-East Asia: Bangladesh, Cambodia, China, India, Laos, Myanmar, Nepal, Pakistan, Taiwan and Vietnam. Environmental issues in Rural Settlement. Arsenic is a natural component of the earth’s crust and is widely distributed throughout the … the rice, wheat, vegetables, feeder crops of livestocks. Arsenic is a chemical element occurs in many minerals, usually in combination with sulfur and metals. This large amount of inorganic arsenic-based pesticides has led to serious arsenic contamination in the environment. ; Settlement is a man’s important step towards adaptation in his physical environment and to enjoy a social life. Arsenic contamination of groundwater is a problem that affects millions of people across the world. Arsenic. It causes an illness called arsenicosis, the early manifestations of which are the appearance of dark and white patches on the skin. This increased to 4,421 habitations as of September 2020. Arsenic contamination- effects. Most of the arsenic-affected habitations lie in the Ganga and Brahmaputra alluvial plains. Hot water should be let to cool off before its release from the power plants. Recently released 2008 National Census data has revealed village level statistics for drinking water sources. The well water in the resident's home was found to contain 5 mgll ofarsenic, which was ten times the maximum acceptable concentration in Canada of 0.05 mg/l. The next stage is keratosis in which palms become hard) and leads to loss of appetite, weight, diarrhoea, gastrointestinal disturbances and skin cancer. GS 2 . It reveals that rise in arsenic contamination of paddy plants due to concentration of arsenic accumulation depends on variety of paddy and its stage in crop cycle. Statement 2 is correct. Arsenic. Governmental Interventions in health arena. Contaminated water used for drinking, irrigation of food crops and food preparation poses the greatest threat to public health from arsenic Long-term exposure to … Continue reading Arsenic Contamination Malnutrition may aggravate the effects of arsenic in blood vessels. In terms of charge and size, the fluoride ion resembles the hydroxide ion. A number of acute and sub-acute arsenic intoxication cases have been reported in the affected regions. Natural: Some substances found naturally in rocks or soils, such as iron, manganese, arsenic, chlorides, fluo- rides, sulfates, or radionuclides, can become dissolved in groundwater. Major Governmental Interventions in the Social Sector. Policies and interventions for development in various sectors. Millions of people from different countries are heavily dependent on groundwater containing elevated level of As for drinking purposes. Download CNA for 14th March 2021. Context: Researchers in West Bengal have developed and commercialized a rice variety that is resistant to Arsenic and can be grown in areas with very high arsenic-contamination.Last year West Bengal issued a Gazette notification for the commercial use of “Muktoshri”. in arsenic contamination levels across the country, and this variation can occur at small spatial scales (even sub-village scales). Groundwater Contamination ... • Arsenic: In the Ganges Plain of northern India and Bangladesh severe contamination of groundwater by naturally occurring arsenic affects 25% of water wells in the shallower of two regional aquifers. It is widely distributed throughout the environment in the air, water and land. For Mains: Concerns associated and government … As you know, the Environment comes under Prelims as well as GS Paper-3 in UPSC Mains Syllabus.Almost 12-28 questions are coming in the UPSC Prelims exam every year, from this part only.. Search [wp-night-mode-button] Posted on May 6, 2019 by InsightsIAS. India had 1,800 arsenic-affected habitations in 2015. Simplifying UPSC IAS Preparation. Arsenic contamination in drinking water threatens more than 150 millions peoples all over the world. Government policies and interventions for development in various sectors and issues arising out of their design and implementation. Important aspects of governance, transparency and accountability . Groundwater arsenic contamination is most prevalent in parts of Kandal, Kampong Cham, and Prey Veng provinces. Groundwater Contamination: Ground water contamination is the presence of certain pollutants in ground water that are in excess of the limits prescribed for drinking water. Apart from West Bengal, Arsenic contamination in groundwater has been found in the states of Assam, Bihar, Chhattisgarh, Haryana, Jharkhand, Karnataka, Punjab and … Context: West Bengal government’s rice research centre has come up with a new variety of rice called Muktoshri that can be grown in arsenic prone areas. For Prelims: Arsenic contamination- state- wise level of contamination. Search. i.e in Assam, Bihar, West Bengal, Punjab, and Uttar Pradesh (UP). Seepage of industrial and mine discharges, fly ash ponds of thermal power plants can lead to arsenic in groundwater. Distribution. Natural resources of arsenic exposure may include contaminated groundwater, volcanic sediments, coal, and springs sourced by thermal waters. Arsenic Contamination . About Muktoshri: Arsenic contamination has become a big public health issue. Contamination of Ground Water Due to Arsenic and Fluoride. However, a person can exhibit any one of these symptoms as well as all of them. Arsenic contamination in water may also be due to industrial processes such as those involved in mining, metal refining, and timber treatment. Initiative of government in the field of education. This figure is limited by the ability to analyse low concentrations of arsenic in water. Arsenic contamination . the entry of arsenic in food chain leads to diffused contamination, possibilities of bio-magnification in food products. Arsenic problem contamination of drinking water occurs due to excessive use of arsenic containing chemical pesticides viz copper arsenate and lead arsenate in the modern agriculture. Thus, statistics of arsenic being present in 270 out of 464 Upazilas in the country need to be tempered with the fact that the level of arsenic as well as percentage of wells contaminated can vary considerably within each Upazila. Mains level : Prevention of water pollution. What to study? 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