WATER ANALYSIS | DETERMINATION OF CHLORIDES

 EXPERIMENT ON DETERMINATION OF CHLORIDES

PREAMBLE:

“How to determine chlorides in Water and Wastewater”.
Test procedure is in accordance to IS: 3025 (Part 32) - Reaffirmed 2003.
In addition to our Indian Standard, we also discuss in brief regarding the procedure stated in
(1) APHA Standard Methods for the Examination of Water and Wastewater -20th Edition. Method 4500 - Cl- - B.
(2) Methods for Chemical Analysis of Water and Wastes, EPA-600/4-79-020, USEPA, Method 9253.

WATER ANALYSIS | DETERMINATION OF CONDUCTIVITY

 EXPERIMENT ON DETERMINATION OF CONDUCTIVITY

PREAMBLE:

“How to determine conductivity in Water and Wastewater”.
Test procedure is in accordance to IS: 3025 (Part 14) - Reaffirmed 2002. In addition to our Indian Standard, we also discuss in brief regarding the procedure stated in
(1) APHA Standard Methods for the Examination of Water and Wastewater - 20th Edition. Method 2510.
(2) Methods for Chemical Analysis of Water and Wastes, EPA-600/4-79 020, USEPA, Method 120.1.

WATER ANALYSIS | DETERMINATION OF TURBIDITY

 EXPERIMENT ON DETERMINATION OF TURBIDITY

PREAMBLE:

“How to determine turbidity in Water and Wastewater”.
Test procedure is in accordance to IS: 3025 (Part 10) - Reaffirmed 2002. In addition to our Egyption Standard, we also discuss in brief regarding the procedure
stated in
(1) APHA Standard Methods for the Examination of Water and Wastewater - 20th Edition. Method 2130 B.
(2) Methods for Chemical Analysis of Water and Wastes, EPA-600/4-79-020, USEPA,Method 180.1.

WATER ANALYSIS | DETERMINATION OF pH

 EXPERIMENT ON DETERMINATION OF pH

“How to determine pH in Water and Wastewater”.
Test procedure is in accordance to IS: 3025 (Part 11) - Reaffirmed 2002. In addition to our Egyption Standard, we also discuss in brief regarding the procedure stated in
(1) APHA Standard Methods for the Examination of Water and Wastewater - 20th Edition. Method 4500-H+ B.
(2) Methods for Chemical Analysis of Water and Wastes, EPA-600/4-79-020, USEPA, Method 150.1.

Determination of absorbance

Determination of absorbance

Phosphorus

 Phosphorus method

 Test solution 

 Use a volumetric flask with a suitable volume for preparation of a  solution containing about 5 mg per millilitre of dry polysaccharide.

 Transfer the  contents of a container quantitatively to the flask and dilute to volume with water R.

  Dilute the solution so that the volume used in the test (1 mL) contains about 6 µg of  phosphorus. 

Transfer 1.0 mL of the solution to a 10 mL ignition tube.   

 Reference solutions

 Dissolve 0.2194 g of potassium dihydrogen phosphate R in  500 mL of water R to give a solution containing the equivalent of 0.1 mg of  phosphorus per millilitre. 

Dilute 5.0 mL of the solution to 100.0 mL with water R.  Introduce 0.5 mL, 1.0 mL and 2.0 mL of the dilute solution into 3 ignition tubes.

 Prepare a blank solution using 2.0 mL of water R in an ignition tube.

 To all the tubes add 0.2 mL of sulfuric acid R and heat in an oil bath at 120 °C for 1 h  and then at 160 °C until white fumes appear (about 1 h). Add 0.1 mL of perchloric  acid R and heat at 160 °C until the solution is decolorised (about 90 min). 

Cool and  add to each tube 4 mL of water R and 4 mL of ammonium molybdate reagent R.  

Heat in a water-bath at 37 °C for 90 min and cool.

 Adjust the volume to 10.0 mL with  water R. The blue colour is stable for several hours.

Measurements

Measure the absorbance of each solution at 760 nm using the blank as the  compensation liquid. 

Draw a calibration curve from the absorbances of the 6  reference solutions and the corresponding protein contents and read from the curve  the content of protein in the test solution.

References

Ph. Eur. method 2.5.18

صدور قانون المجلس الصحى المصرى قانون رقم 12 لسنة 2022

صدور قانون المجلس الصحي المصري قانون رقم 12 لسنة 2022