Chemical Reference Materials Setting the Standards for Ocean Science (2002) / Chapter Skim
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Pages 116-121
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From page 116... ...
116 APPENDIX C Glossary Accelerator mass spectrometry: Instrumental technique for direct enumeration of low-level radioactive nuclides. Accuracy: The closeness of agreement between a test result and the accepted reference value.
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From page 117... ...
APPENDIX C 117 CAM (Crassulacean Acid Metabolism) photosynthetic pathway: A variant of the C4 pathway; phosphoenolpyruvate fixes CO2 in C4 compounds at night, and then, the fixed CO2 is transferred to the ribulose bisphosphate of the Calvin cycle within the same cell during the day.
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From page 118... ...
118 APPENDIX D Foraminifera: Micrometer-size animals that possess calcium carbonate tests. Haptophyte: Hex-fuxoxanthin–containing phytoplankton whose representatives include calcium carbonate plate-forming species (e.g., E
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From page 119... ...
APPENDIX C 119 the isotope can be expected to behave in the same way as the metal being determined, and can be used to establish the recovery of the preconcentration steps used prior to detection. Instead of the absolute quantity, the isotopic ratio is determined.
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From page 120... ...
120 APPENDIX D Photoheterotrophy: A mode of nutrition based on sunlight and the oxidation of organic compounds. Phytoplankton: Small (often microscopic)
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From page 121... ...
APPENDIX C 121 Secondary Standard: Standard whose value is assigned by comparison with a primary standard of the same quantity. Secular Equilibrium: A condition that occurs when a chain of radionuclides has reached a steady state condition, in which the rate of decay of daughter nuclides is balanced by their rate of formation by decay of each parent.
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