Colonnade
发表于 2025-3-26 22:36:02
Amleto e il teatro nell’era scientificase. For a buffer to be effective, its pH must be within the range p. ± 1, or preferably, within p. ± 0.5. The former scarcity of buffer substances with a pH range 6 to 8 frequently led to the use of buffers such as phosphate or Tris in pH regions where they had little buffer capacity.
向下
发表于 2025-3-27 05:00:35
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investigate
发表于 2025-3-27 07:29:04
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Canyon
发表于 2025-3-27 13:17:38
Introduction,change in pH. This resistance to change in the free hydrogen ion concentration of a solution was described by Fernbach and Hubert (1900) as ‘buffering’. In studies of the enzyme, amylase, they found that a partly neutralized solution of phosphoric acid acted as a ‘protection against abrupt changes i
清真寺
发表于 2025-3-27 13:37:50
Applications of pH Buffers, is clearly the most important single factor in choosing a buffer for any particular application and reference to lists of p. values such as those given in Appendix III provides a rapid indication of possible buffer substances.
刺耳
发表于 2025-3-27 18:23:13
Practical Limitations in the use of Buffers,se. For a buffer to be effective, its pH must be within the range p. ± 1, or preferably, within p. ± 0.5. The former scarcity of buffer substances with a pH range 6 to 8 frequently led to the use of buffers such as phosphate or Tris in pH regions where they had little buffer capacity.
大看台
发表于 2025-3-27 22:11:12
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ARBOR
发表于 2025-3-28 02:38:58
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直觉没有
发表于 2025-3-28 09:32:47
Metal-Ion Buffers,0.M are difficult to maintain in the presence of adventitious complexing agents, hydrolytic equilibria, adsorption and, possibly, contamination. Many problems can be overcome by the use of metal-ion buffers which provide a controlled source of free metal ions in a manner similar to the regulation of
projectile
发表于 2025-3-28 11:43:37
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