Determining Trace Element Concentrations in Marine Larvae Using Electrothermal Vaporization and Laser Ablation Technology
SCRIPPS INSTITUTION OF OCEANOGRAPHY LA JOLLA CA MARINE LIFE RESEARCH GROUP
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LONG TERM GOALS. The overall objective of this DURIP award was the acquisition of two analytical instruments to enhance analytical capabilities in support of grant no. N00014-96-1-0025. This research is concerned with determining the uptake and retention of toxicants by invertebrate larvae as well as the effect of contaminants on larval survival, rates of development, dispersal and recruitment. OBJECTIVES. This DURIP provided funds to improve analytical capabilities of an existing Inductively Coupled Plasma-Mass Spectrometer ICP-MS owned and operated by the Scripps Institution of Oceanography s SIO Analytical Facilities. ICP-MS is an extremely sensitive analytical tool used to simultaneously characterize and quantify elemental composition, including rare earth elements, transition and heavy metals. The previous facility could not handle small sample sizes, such as microscopic larvae dry weight 0.01 mg, or solid samples. The objective was to acquire equipment which would permit analyses of individual larval crabs while maintaining the accuracy, speed and ease of multiple elemental analysis associated with ICP-MS.
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