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They have intermediate properties and if not managed properly they can easily become sodic. The presence of a permanent or seasonal high water table is often a sign of saline or sodic soils. (...) Most soils range in pH from slightly less than 2.0 to slightly more than 11.0, although sulfuric acid forms and pH may decrease to below 2.0 when some naturally wet soils that contain sulfides are drained.
Language:English
Score: 1301968.4 - https://www.fao.org/soils-port...ted-soils/technical-issues/en/
Data Source: un
They have intermediate properties and if not managed properly they can easily become sodic. The presence of a permanent or seasonal high water table is often a sign of saline or sodic soils. (...) Most soils range in pH from slightly less than 2.0 to slightly more than 11.0, although sulfuric acid forms and pH may decrease to below 2.0 when some naturally wet soils that contain sulfides are drained.
Language:English
Score: 1301968.4 - https://www.fao.org/soils-port...ted-soils/technical-issues/ru/
Data Source: un
They have intermediate properties and if not managed properly they can easily become sodic. The presence of a permanent or seasonal high water table is often a sign of saline or sodic soils. (...) Most soils range in pH from slightly less than 2.0 to slightly more than 11.0, although sulfuric acid forms and pH may decrease to below 2.0 when some naturally wet soils that contain sulfides are drained.
Language:English
Score: 1301968.4 - https://www.fao.org/soils-port...ted-soils/technical-issues/fr/
Data Source: un
They have intermediate properties and if not managed properly they can easily become sodic. The presence of a permanent or seasonal high water table is often a sign of saline or sodic soils. (...) Most soils range in pH from slightly less than 2.0 to slightly more than 11.0, although sulfuric acid forms and pH may decrease to below 2.0 when some naturally wet soils that contain sulfides are drained.
Language:English
Score: 1301968.4 - https://www.fao.org/soils-port...ted-soils/technical-issues/es/
Data Source: un
Ozone is a major factor in asthma morbidity and mortality, while nitrogen dioxide and sulfur dioxide also can play a role in asthma, bronchial symptoms, lung inflammation and reduced lung function.   (...) It is produced from the burning of fossil fuels (coal and oil) and the smelting of mineral ores that contain sulfur. The main anthropogenic source of SO 2  is the burning of sulfur-containing fossil fuels for domestic heating, power generation and motor vehicles. (...) When SO 2  combines with water, it forms sulfuric acid; this is the main component of acid rain which is a cause of deforestation.  
Language:English
Score: 1300519.9 - https://www.who.int/en/news-ro...utdoor)-air-quality-and-health
Data Source: un
Ozone is a major factor in asthma morbidity and mortality, while nitrogen dioxide and sulfur dioxide also can play a role in asthma, bronchial symptoms, lung inflammation and reduced lung function.   (...) It is produced from the burning of fossil fuels (coal and oil) and the smelting of mineral ores that contain sulfur. The main anthropogenic source of SO 2  is the burning of sulfur-containing fossil fuels for domestic heating, power generation and motor vehicles. (...) When SO 2  combines with water, it forms sulfuric acid; this is the main component of acid rain which is a cause of deforestation.  
Language:English
Score: 1300519.9 - https://www.who.int/news-room/...utdoor)-air-quality-and-health
Data Source: un
Through the 1980s acid rain remained an issue, and in November 1990 further Clean Air Act Amendments were passed.2,3,7 Sulfur dioxide (SO2), released when fossil fuels containing sulfur are burned, is the main cause of acid rain. (...) At the end of the 1980s, the prices for rail transportation fell more than 75 per cent, extending the number of power plants that could afford to purchase low-sulfur coal. Population shifts to the western United States also promoted the use of low-sulfur coal. (...) These units were given allowances based on their previous emissions, but through a shift to low-sulfur coal, they were able to reduce emissions 20 to 30 per cent at low cost.7 Finally, reductions with respect to 1980 levels were also stimulated by the Clean Air Act Amendments of 1977, which imposed an SO2 reduction standard of 90 per cent on high-sulfur coal and 70 per cent on low-sulfur coal.
Language:English
Score: 1294057.2 - https://www.un.org/esa/sustdev/publications/esa99dp7.pdf
Data Source: un
Other major emissions are nitric oxide (NO) and nitrogen dioxide (NO2), sulfur oxides (SOx) and soot. Contrary to CO2, the other gases have shorter atmospheric residence times, and therefore remain concentrated to flight routes. (...) Phase out of lead in gasoline and reduction of sulfur in diesel fuel received increased attention. (...) It requires that by 1993 at latest, Parties reduce their annual sulfur emissions on their transboundary fluxes by at least 30%, using 1980 levels as a basis.
Language:English
Score: 1289390.2 - https://www.un.org/esa/sustdev/csd/csd9_bp15.pdf
Data Source: un
The substances for which there are existing reporting obligations in the Convention and the protocols, as further specified by Executive Body decision 2013/4, include:5 (a) “Sulfur”, which means all sulfur compounds expressed as sulfur dioxide (SO2) (including sulfur trioxide (SO3), sulfuric acid (H2SO4), and reduced sulfur compounds, such as hydrogen sulfide (H2S), mercaptans and dimethyl sulfides, etc.); (b) “Nitrogen oxides” (NOX), which means nitric oxide and nitrogen dioxide, expressed as nitrogen dioxide (NO2); (c) Ammonia (NH3); (d) “Non-methane volatile organic compounds” (NMVOCs), which means all organic compounds of an anthropogenic nature, other than methane, that are capable of producing photochemical oxidants by reaction with NOx in the presence of sunlight; (e) Carbon monoxide (CO); (f) “Particulate matter” (PM), which is an air pollutant consisting of a mixture of particles suspended in the air. (...) Such information shall, as far as possible, be submitted in accordance with a uniform reporting framework. 1994 Oslo Protocol on Further Reduction of Sulfur Emissions (art. 5 (1) (b) and (2)) Article 5 REPORTING 1. (...) (b) The levels of national annual sulfur emissions, in accordance with guidelines adopted by the Executive Body, containing emission data for all relevant source categories; ... 2.
Language:English
Score: 1289280.8 - https://unece.org/sites/defaul....AIR_GE.1_2022_20-2210473E.pdf
Data Source: un
An ADI 'not specified' was established at the 37th JECFA (1990) SYNONYMS Sodium isoascorbate DEFINITION Chemical names Sodium isoascorbate, sodium D-isoascorbic acid, sodium salt of 2,3- didehydro-D-erythro-hexono-1,4-lactone, 3-keto-D-gulofurano-lactone sodium enolate monohydrate C.A.S. number 6381-77-7 Chemical formula C6H7O6Na · H2O Structural formula Formula weight 216.13 Assay Not less than 98% after drying DESCRIPTION White, almost odourless crystalline powder FUNCTIONAL USES Antioxidant CHARACTERISTICS IDENTIFICATION Solubility (Vol. 4) Freely soluble in water, very slightly soluble in ethanol Reducing activity A solution of the sample will decolourize a solution of 2,6-dichloro- phenolindophenol TS Test for ascorbate (Vol. 4) Passes test Test for sodium (Vol. 4) Passes test Test a solution of previously ignited sample, acidified with dilute acetic acid TS, filtered if necessary PURITY Loss on drying (Vol. 4) Not more than 0.25% (in vacuum over sulfuric acid, 24 h) Specific rotation (Vol. 4) [alpha] 25, D: Between +95.5o and +98.0o (10% (w/v) solution) pH (Vol. 4) 5.5 - 8.0 (1 in 10 soln) Oxalate To a solution of 1 g in 10 ml of water add 2 drops of glacial acetic acid and 5 ml of 10% calcium acetate solution. (...) METHOD OF ASSAY Dissolve about 0.400 g of the dried sample in a mixture of 100 ml of carbon dioxide-free water and 25 ml of dilute sulfuric acid TS. Titrate the solution at once with 0.1 N iodine, adding a few drops of starch TS as indicator as the end point is approached.
Language:English
Score: 1288185.2 - https://www.fao.org/fileadmin/...cs/Monograph1/Additive-404.pdf
Data Source: un