Determination of Phosphor in Producing Tungsten Products

ZHANG Dong—mei. Determination of Phosphor in Producing Tungsten Products[J]. Nonferrous Metals Science and Engineering, 2005, 19(2): 42-43.

Citation:

ZHANG Dong—mei. Determination of Phosphor in Producing Tungsten Products[J]. Nonferrous Metals Science and Engineering, 2005, 19(2): 42-43.

Citation:

ZHANG Dong—mei. Determination of Phosphor in Producing Tungsten Products[J]. Nonferrous Metals Science and Engineering, 2005, 19(2): 42-43.

Abstract

In an vitroI acid medium, phosphate in the sampIe reacts with ammonium moIybdate and stammous chIoride to form a bIue compIex. Micro -amounts of phosphor can be determinated in the agueous phase using gIyceroI as soIubiIizing agent, and its maximaI absorption is at 690nm. The mass concentration range of phosphor is between 0~ 2.5 m per 50mL of soIution, and it is direct ratio to absorbance. The suitabIe conditions of coIor reaction are studied.

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