大笑
发表于 2025-3-25 03:48:31
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Resistance
发表于 2025-3-25 08:25:04
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MILL
发表于 2025-3-25 12:50:25
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团结
发表于 2025-3-25 19:21:56
Analytical Chemistry Principles,sotopes. Chemical reactions involving the radionuclide will proceed with essentially the equilibrium and rate constants known for the stable element in the same chemical form. Slight differences result from small differences between the isotopic mass of the radionuclide and the atomic mass (i.e., th
GLIDE
发表于 2025-3-25 20:30:33
Radioanalytical Chemistry Principles and Practices, difference to consider is the extremely low amounts of radionuclides generally analyzed in the radioanalytical chemistry laboratory. As noted in Section 13.1, the environmental samples in a radioanalytical chemistry laboratory typically are in the picocurie to nanocurie (0.037 to 37 Bq) range; this
蛤肉
发表于 2025-3-26 01:56:01
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喷油井
发表于 2025-3-26 07:59:05
Applied Radioanalytical Chemistry,sly identifying the radionuclide of interest and determining its amount in a sample. The chemistry component of the analysis begins with the sample collection and handling described in Chapter 5 and ends with the source preparation discussed in Chapter 7. The radiation emitted by the radionuclide is
NOTCH
发表于 2025-3-26 10:18:31
Preparation for Sample Measurement,g. The analyst wants to prepare a source that represents the radionuclide in the collected sample, can be measured reliably by its radiation, and is stable. The analyst selects a detector that is sensitive to the radiation that characterizes the radionuclide, stable as defined by its QA program, and
NAVEN
发表于 2025-3-26 15:14:13
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帐单
发表于 2025-3-26 18:24:40
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