sains:Sulfide (S-2)

Understanding SulfideSulfide is an ionic form of sulfur which the sulfur ions requires two more electrons in their outermost shells to achieve stability. Because it takes longer then 2 ions denoted S-2. Examples of sulfide compounds are H2S (sulfide acid)Sulfide is one of the toxicant that can be produced from leather tanning industry,oil refining, sugar industry and several other industries.H2S is a very dangerous gas, occupies a position second only to Hydrogen Cyanide and with very high levels of toxins that five to six times the toxic carbon monoxide. Soluble in water and liquid hydrogen.


The effects SulfideDisruptive eyes, metal mengaratkan electrochemical series, not seen, has a specific gravity greater than air. This gas can paralyze the respiratory system and can kill in an instant. At low concentrations of H2S has a pungent smell like rotten eggs. At high concentrations, can not smell the gas smell because they can quickly turn off the sense of smell and shut down our nervous system.Symptoms resulting from inhalation of H2S gas at low concentrations either alone or jointly as follows: Dizziness, Nausea, Pain drift, Anxiety, Drowsiness, cough-cough, dry taste and pain in the nose, throat and chest .The main danger of this gas is inhalation deaths. When the amount of gas absorbed into the circulatory system beyond the ability of oxidation in the blood it will cause toxicity to the nervous system. Shortness of breath occurs briefly and followed by paralysis (paralysis) breathing at higher concentrations.If the victim is not immediately removed to fresh air and given artificial respiration, death is imminent due to enervation (asphyxiation).H2S is formed by organic substances decompose, can be found in the location of oil and gas drilling, geothermal (geothermal), the facility mining facility, the petrochemical industry, where treatment and disposal of sewage, landfills and other facilities.
Sulfide Test MethodHow to test the levels of sulfide in water by iodometricSNI 03-6875-2002SCOPEThis standard is a way to test the levels of sulfide in water by iodometric. This standard can be used to test the levels of sulfide in water and wastewater. Satandar sulphide is used to test the water samples that measure more than 0.1 mg / l.SUMMARYEquipment:• Burette or appliance titration to the nearest 0.05 ml.• 500 ml Erlenmeyer flask.• Pipette 2 ml drops.• 500 ml glass bottle with a lid teasers.• Measuring cup 250 ml.Examples of tests include:• Taken in accordance with SNI 06-2412-1991.• tested immediately after sampling.• No colored.How to test, among other things:• Measure the number of iodine solution from a burette into 500 ml Erlenmeyer, estimate the amount of iodine is greater than the content of sulphide in the test sample.• If necessary add distilled water to a volume of 20 ml.• Add 2 ml of HCl 6 N.• For the specimen without preliminary treatment, measure 20 ml and for specimens with preliminary treatment using 100 ml Erlenmeyer flask and then enter into the above.