What happens when a phosphate containing solution is added ammonium molybdate?

What happens when a phosphate containing solution is added ammonium molybdate?

A small amount of the sample is acidified with concentrated nitric acid, to which a little ammonium molybdate is added. The presence of phosphate ions is indicated by the formation of a bright yellow precipitate layer of ammonium phosphomolybdate. The appearance of the precipitate can be facilitated by gentle heating.

What NH4 24?

Ammonium heptamolybdate is the inorganic compound whose chemical formula is (NH4)6Mo7O24, normally encountered as the tetrahydrate. It is one of the more common molybdenum compounds.

What is phosphate test?

A phosphate test is used to measure the level of phosphate in the blood. Phosphate is a chemical that contains the mineral phosphorus. Phosphates are essential for the production of energy, muscle and nerve function, and bone growth.

Which is the correct definition of ammonium molybdate?

Definition of ammonium molybdate : a white crystalline salt used in analytical chemistry as a precipitant of phosphoric acid with which it forms a yellow precipitate of ammonium phosphomolybdate

What is the fia-073 method for phosphate determination?

Phosphate Determination –FIA-073. PRINCIPLE . This method is designed for the determination of ortho-phosphate in water, soil, and other forms of samples. The sample is prepared offline if necessary and then introduced to the FIAlab analyzer. Ortho- phosphates react with molybdate anions to form a yellow colored complex;

How are ortho phosphates determined by molybdenum blue?

This method is designed for the determination of ortho-phosphate in water, soil, and other forms of samples. The sample is prepared offline if necessary and then introduced to the FIAlab analyzer. Ortho- phosphates react with molybdate anions to form a yellow colored complex; this complex is reduced to a molybdenum blue species by ascorbic acid.

How are phosphate ions determined in a sample?

This method for phosphate determination is known as Denigés’ method. A simple qualitative method to determine the presence of phosphate ions in a sample is as follows. A small amount of the sample is acidified with concentrated nitric acid, to which a little ammonium molybdate is added.

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