The toxic element test for Ammonium Metatungstate requires a series of steps to be followed to ensure accuracy and reliability.
- Preparation stage
Sample Preparation: Obtain a representative sample from Ammonium Metatungstate product, make sure the sample is well mixed and not contaminated.
Reagent and Instrument Preparation: Prepare the required reagents and instruments according to the test method to be used. Common instruments include Atomic Absorption Spectrometer (AAS), Inductively Coupled Plasma Emission Spectrometer (ICP-OES) and so on.
- Dissolution and pretreatment
Dissolve the sample
Ammonium metatungstate samples are dissolved in a suitable solvent for subsequent analysis. This usually involves the use of an acid (e.g. hydrochloric acid) to dissolve the sample.
Pretreatment
If interfering substances are present in the sample, pretreatment steps such as filtration, dilution, or addition of a masking agent may be required to eliminate these interferences.
- Toxic Element Testing
Selection of test method
According to the type and concentration range of the toxic element to be tested, select the appropriate detection method. Common toxic elements include lead (Pb), cadmium (Cd), mercury (Hg) and so on.
Atomic Absorption Spectrometry (AAS)
Suitable for detecting toxic elements at low concentrations. The amount of an element in a sample is determined by measuring how much of it is absorbed by light of a specific wavelength. For example, AAS can be used to detect the content of elements such as Pb and Cd.
Inductively Coupled Plasma Emission Spectrometry (ICP-OES)
With higher sensitivity and accuracy, it is suitable for detecting a wide range of toxic elements. The content of an element in a sample is determined by measuring the characteristic spectrum emitted by the element under plasma excitation.ICP-OES can be used to detect a wide range of toxic elements such as Pb, Cd, Hg and others.
Setting the detection parameters
Set the appropriate parameters, such as wavelength, lamp current, detection limit, etc., according to the selected detection method and instrument.
Execute the detection
The pre-treated sample solution is injected into the testing instrument and tested according to the set parameters. Record the test results and analyze them.
- Result analysis and reporting
Data Analysis
Based on the test results, analyze whether the content of toxic elements in the sample exceeds the relevant standards or requirements.
Preparation of report
Prepare a test report with test results, analytical conclusions and relevant information for subsequent quality control and risk assessment.
- Precautions
Ensure sample representativeness
Select representative samples for testing to reflect the overall product quality.
Follow the operating procedures
Strictly follow the operating procedures of the testing methods and instruments to ensure the accuracy and reliability of the test results.
Pay attention to safety protection: Pay attention to personal safety protection during the testing process to avoid the harm of toxic elements to personnel and the environment.
The toxic element test of ammonium metatungstate is an important step to ensure its safe use. By choosing suitable testing methods and instruments and following strict operating procedures, the content of toxic elements in the samples can be accurately determined, providing an important basis for product quality control and risk assessment.
More details of ammonium metatungstate product, please visit website: http://ammonium-metatungstate.com/
Please contact CHINATUNGSTEN for inquiry and order of ammonium metatungstate:
Email: sales@chinatungsten.com
Tel.: 86 592 5129595
