Preparation and certification of trace mercury in water standard reference materials

Conference · Thu Jan 01 00:00:00 EST 1976 · Natl. Bur. Stand. (U.S.), Spec. Publ.; (United States)

OSTI ID:7125014

Moody, J R; Paulsen, P J; Rains, T C; Rook, H L

The study of mercury in natural water supplies requires a Standard Reference Material (SRM) with a certified concentration at the 1 ng/g level. NBS SRM's have been prepared with nominal mercury concentrations of 1.5 ..mu..g/g and 1.2 ng/g. Confirmation of these values was obtained by neutron activation, atomic absorption, and isotope dilution-spark source mass spectrometry (IDSSMS). Nitric acid and trace amounts of gold were added to achieve a stable mercury concentration. The precautions observed for cleaning the glass and Teflon containers, preparation of mercury solutions, and the packaging of the SRM's are given. As an example of the care needed in the analysis of mercury at these levels, specific details are presented for the chemistry required to prepare samples for the spark source mass spectrometer (SSMS).

• Research Organization: National Bureau of Standards, Washington, DC
• OSTI ID: 7125014
• Journal Information: Natl. Bur. Stand. (U.S.), Spec. Publ.; (United States), Vol. 1; Conference: 7. materials research symposium, Gaithersburg, MD, USA, 7 Oct 1974; Other Information: See NBS-SPEC.PUBL.--422(Vol.1); CONF-741023--P1
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
MERCURY
ABSORPTION SPECTROSCOPY
ACTIVATION ANALYSIS
MASS SPECTROSCOPY
WATER
CHEMICAL ANALYSIS
ISOTOPE DILUTION
NEUTRON REACTIONS
STANDARDS
TRACE AMOUNTS
BARYON REACTIONS
ELEMENTS
HADRON REACTIONS
HYDROGEN COMPOUNDS
ISOTOPE APPLICATIONS
METALS
NUCLEAR REACTIONS
NUCLEON REACTIONS
OXYGEN COMPOUNDS
SPECTROSCOPY
TRACER TECHNIQUES
400101* - Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures
400104 - Spectral Procedures- (-1987)