The detection methods of Ammonium Metatungstate Hydrate mainly include the following, which are indicated and summarized in clear points below:
Content determination
Usually use the methods in national standards such as GB/T 26033-2010 “Ammonium metatungstate” for content determination.
Impurity determination
Flame Atomic Absorption Spectrometry (FAAS)
It is suitable for the determination of some metal impurities in Ammonium Metatungstate, such as Zinc (Zn). For example, GB/T 23368.2-2009 “Ammonium metatungstate chemical analysis method. Part 2: Determination of Zinc. Flame Atomic Absorption Spectrometry” stipulates specific testing steps and requirements.
Inductively Coupled Plasma Emission Spectrometer (ICP-OES)
ICP-OES can determine a variety of impurity elements in ammonium metatungstate, such as Co, Cr and so on. This method has the advantages of low detection limit, high sensitivity and resistance to matrix interference.
PH value detection
PH meter or PH test paper can be used to test the PH value of ammonium metatungstate hydrate.PH value has important influence on the application of ammonium metatungstate in different fields and processes.
Appearance quality
Appearance characteristics such as color, morphology and crystalline condition of Ammonium Metatungstate hydrate are examined visually to make preliminary judgment of its quality.
Determination of water insoluble matter content
Use GB/T 23368.1-2009 “Ammonium metatungstate chemical analysis method. Part 1: Determination of water-insoluble substance content. Weighing method”, the water-insoluble content of ammonium metatungstate can be determined.
Other chemical analysis methods
Other chemical analysis methods such as titrimetric method and colorimetric method can be used to determine specific components or impurities in Ammonium Metatungstate Hydrate as needed.
Particle size distribution detection
The particle size distribution of ammonium metatungstate hydrate can be determined using a particle size analyzer (such as laser particle size analyzer) to understand its physical properties and processing performance.
When carrying out the testing of Ammonium Metatungstate Hydrate, a certain process needs to be followed, including steps such as communicating needs, quoting, contracting, completing the testing and issuing the testing report. At the same time, the testing process needs to pay attention to safe operation to ensure the accuracy and reliability of the test results. If you need more professional testing services, you can contact a third-party testing organization with CMA/CNAS qualification.
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