ASTM D6071 Standard Test Method for Low-Level Sodium in High Purity Water by Graphite Furnace Atomic Absorption Spectroscopy
ASTM D6071 covered the measurement of trace sodium in high purity water. The sodium concentration range for this technique is 1–40 g/L. The values are expressed in SI units.
Scope
Graphite Furnace Atomic Absorption Spectroscopy (GFAAS) is a method for determining low sodium concentrations. Small amounts of sodium of 1–10 g/L can greatly impact high-pressure boilers and nuclear power plants. The effluents from condensate polishing systems should contain fewer than 1 mg/L.
Procedure
In the test method of ASTM D6071, the system is heated in an inert gas atmosphere and a sample volume of several microliters is deposited on a graphite tube within an electrical furnace. The sample is evaporated until it is completely dry, then ashes and atomized. The quantity of energy absorbed by grounded atoms in a sample is proportional to the analyte concentration. The absorption signal produced during atomization is saved in microprocessor memory, and an analytical curve is compared to standards.
Specimen size
2.542 g of sodium chloride is dissolved in water and must be diluted to 1 L.
Data
Precision presented in the following way:
St = 0.22(X)+ 0.88
So = 0(X) + 0.91
Where:
St = overall precision,
So = single operator precision,
X =determined concentration of sodium, μg/L.
Conclusion
ASTM D6071 covered the measurement of trace sodium in high purity water.
Talk to Our Experts Today!
Submit your contact info and we’ll get back to you within 24 hours
Full Spectrum of ASTM Material Testing — Backed by 2,000+ Trusted Lab Partners
ASTM standards for chemical composition, physical properties, failure analysis, and other routine and non-routine testing for polymers and plastics
ASTM standards for determination of mechanical, physical, and thermal properties, and performance of monolithic and composite ceramics
ASTM standards guiding various destructive, non-destructive and analytical tests for quality control of different metals and alloys
ASTM standards for chemical analysis of solid, liquid and gaseous materials for specification compliance and quality control
ASTM standards for various chemical, physical, stability and exposure analysis of paints and coatings
Our Services
Metrology
A variety of microscopy and spectroscopy tools available for precise measurements from the nano to the meter scale.
Learn More
Materials Testing
ASTM and ISO standard and custom chemical, mechanical, thermal, corrosion tests, etc. for all materials metals, ceramic or polymers.
Learn More
Product Testing
Thousands of tests for product quality and reliability under heat, humidity, temperature shock, vibration, drop, electrostatic discharge.
Learn More
