Round-robin study of methods for trace metal analysis: Volume 2, Atomic absorption spectroscopy: Part 2: Final report

Technical Report · Mon Aug 01 04:00:00 EDT 1988

OSTI ID:6841144

Maddalone, R F; Scott, J W; Frank, J

The objective of this phase (Analytical Methods Qualification) of the project is to develop validated precision and bias statements for selected elements in utility matrices. Four elements (cadmium, iron, mercury, and zinc) were validated in six matrices (river water, ash pond overflow, seawater intake, seawater discharge, treated chemical metal cleaning wastes, and reagent grade water). Cadmium was validated for GFAAS; iron and zinc by Flame AAS; and mercury by CVAAS. Each test matrix was spiked and split into 4 concentrations: a background and 3 samples of increasing concentration. Each participant received four 500 mL sample bottles for each matrix they analyzed. Approximately 40 utility laboratories participated in the study. A statistical analysis program based on ASTM D2777-85 was developed and used to produce statements of precision and bias for each element and method. The raw and outlier free data distributions were tested for normality. The precision data were used to compute limits of detection (LOD) and quantitation (LOQ) for all the elements by matrix. The results from this study tend to indicate the inappropriateness of using single operator, single laboratory data to represent routine monitoring capability in utility matrices. 22 refs., 55 figs., 35 tabs.

• Research Organization: Electric Power Research Inst., Palo Alto, CA (USA); TRW, Inc., Redondo Beach, CA (USA). Applied Technology Div.
• OSTI ID: 6841144
• Report Number(s): EPRI-CS-5910-Vol.2; ON: TI88015355
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ABSORPTION SPECTROSCOPY
ACCURACY
CADMIUM
CHEMICAL EFFLUENTS
COMPILED DATA
CONTROL
DATA
DOCUMENT TYPES
ELEMENTS
ENVIRONMENTAL QUALITY
EQUATIONS
HYDROGEN COMPOUNDS
INFORMATION
IRON
LIQUID WASTES
MATHEMATICS
MEASURING METHODS
MERCURY
METALS
MONITORING
NUMERICAL DATA
OXYGEN COMPOUNDS
POWER PLANTS
PROGRESS REPORT
QUALITY CONTROL
SAMPLE PREPARATION
SPECTROSCOPY
STATISTICS
STREAMS
SURFACE WATERS
TESTING
TRACE AMOUNTS
TRANSITION ELEMENTS
VALIDATION
WASTE WATER
WASTES
WATER
WATER QUALITY
ZINC