Power Plant Guruji

 DETERMINATION OF DISSOLVED OXYGEN IN WATER. Procedure   1.Narrow mouth ground glass stoppered dust proof  test tube of capacity 60 ml. 2.Pipette capacity 10 ml. Indigo Carmine Solution - Dissolve 0.0108 gm of indigo carmine and 0.12 gm of dextrose in 3.0 ml of demineralized water. When completely dissolved add 45 ml. of glycerol. This reagent is stable for two weeks only. Pottasium Hydroxide – 5 gm KOH (Pottasium Hydroxide) is dissolved in 10ml of demineralised water. About half an hour before testing for dissolved oxygen add 20ml of the indigo carmine solution as prepared in the 20.2 and 5 ml of KOH to a small beaker. The solution will change colour from deep red to a lemon yellow in about 15 minutes and then it is ready for use. Collect the sample through the cooler filled with ice on the spot by overflowing the sample from the test tube for about 5 minutes. After sufficient volume of water has passed through the test tube immediately remove the test tube and insert the pipette fil

 ANALYSIS OF SULPHATE IN WATER Standard E.D.T.A. - (.01M) :  Dissolve 3.7274 gm of disodium slat of ethylene Diamine Tetra Acetic Acid  (EDTA), after drying at 80 c for 1 hour, in 1000 ml of de-ionised water and mix well. Hydrochloric Acid (1:24) : Mix one part of con. Hydrochloric Acid and 24 parts of the de-ionised water. Sulphate Buffer :  Mix 113 ml of ammonium hydroxide, 8.252 gm of ammonium chloride, 7.44 gm of E.D.T.A. and 4.060 gm of magnesium chloride (mg Cl2. 6H2O) and make up the volume to 1000 ml with de-ionised water. Sulphate indicator :  Mix 0.5 gm of Eriochome Black T or Solochrome Black and 100 gm. of sodium chloride and grind thoroughly. Take 25 ml. of water sample in a 250 ml. conicle flask. Add 1cc of 1:24 Hydrocloric Acid and boil. Add 15 ml of barium chloride (0.01M) and boil well to precipitate all sulphate in water as barium sulphate. Cool the flask. Take 10 ml. of de-ionised water in a 500 ml flask and add 5 drops of sulphate buffer and a pinch of sulphate

Analysis of co2 in degaser N/50 NaOH: 20 cc of N/1 NaOH is diluted to 1000 cc with demineralised water. Standarise it against N.50 H2SO4. 10 cc of N/50 NAoH should consume 10 cc of N/50 H2SO4 using phelophthalein indicator.  Prepare Phenolphthelin and Methyl orange indicators. as per 7.13 and 7.14 of the work instruction No. SSC/I&T/007/001 for the determination of P and M alkalinity. In two 250 ml conical flasks take 100 cc of the water sample to be tested separately. In the first flask add three drops of phenolphthelein indicator and titrate against N/.50 NaOH note the reading (A). In the 2nd flask add 3 drops of methyle orange indicator and titrate against N/50 NaOH and note the reading (B). Calculation :  (B - A) x 8.8 = CO2 presents in ppm (parts per million) in the sample. ANALYSIS OF HYDRAZINE IN WATER  Dissolve 0.328 gm of Hydrazine dihydrochloride (N2H4 2HCl) in 100 ml of D.M. water (demineralised water) add 10 ml of HCl (SP Gr 1.19) and dilute to 1 litre in a flask and mi