Poisoning by chlorine
Occupational Diseases / / August 12, 2017
Chrome - solid white metal. chromic anhydride - red crystals. potassium dichromate (potassium bichromate) and sodium dichromate - orange-red crystals.
Chromium and its compounds are used as dyes in the textile, printing and leather industries;metal chromium-plating in electroplating shops;for pest control in agriculture.Enter the composition of the coating and chrome-nickel austenitic electrodes used for welding.Chromium is a byproduct in alumina production (in the preparation of alumina from bauxite).
greatest practical importance is the potassium dichromate (potassium bichromate).MPC - 0.01 mg / m3.
Chromium is irritating, cauterizing effect, has sensitizing and carcinogenic, toxic effect is weak.Hexavalent chromium, as compared to trivalent, has a strong toxic and allergenic properties.It comes mainly through inhalation, excreted in the urine;can be released from the milk of nursing women.
Acute intoxication are rare (at very high concentrations of potassium dichromate dust
formation of deep ulcers on the skin ( "bird eyes") and on the mucosa of the nasal septum in its front part, perforation of the nasal septum.Possible (especially when exposed to hexavalent chromium) dermatitis allergic, allergic rinopatiya, bronchial asthma.With a large experience - the development of chronic atrophic rinofaringolaringitov, tracheobronchitis, pulmonary fibrosis, pulmonary emphysema.Often there gastritis, peptic ulcer disease.Abnormal liver function, microscopic hematuria, proteinuria, anemia unsharp.Some authors distinguish between "pulmonary" and "stomach" forms of chronic intoxication with chrome.When working with chrome there is increased incidence of lung cancer that often develops on the background of chrome fibrosis.
recommended silica exposure Ulcers on the skin.When symptoms of liver toxicity -. Appropriate diet, vitamins, etc.
to neutralize the toxic effect of chromium and its rapid excretion recommended treatment unithiol.
disability If you have ulcers on the skin or mucous membranes of the nose - the temporary transfer of ea work not related to the impact of irritants to a complete cure.If, in spite of therapeutic and preventive measures, ulcerative process recurs, shown permanent, employment.Complete perforation of the nasal septum is not contraindicated to continue with chromium.
In allergic diseases (dermatitis, asthma) - permanent employment - translation work that is not related to the contact (both direct and indirect) with chromium compounds.
With symptoms of chronic intoxication (pronounced changes in the upper respiratory tract and deep, pronounced dysfunction of the stomach and liver, especially ulcerative processes) Further work with chromium contraindicated.
When air pollution chromium-containing dust - work in a dust mask, gas masks.Greasing the nose before use fish oil or Vaseline with vitamin A. The skin protection ointments using preventive before work.After work hand washing with 5% sodium thiosulfate and 10% sodium bisulfate solution.Preliminary and periodic medical examinations.