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问:中国科学院大连化学物理研究所编写的《气相色谱法》一书中的表(3—4)内,S′和f为什么不互为倒数?两者有何关系? 答:表中的S′实际为克分子(或体积)相对应答值,f为重量较正因子。若用更确切的符号表示,分别应为S′ f_g。两者的关系为: 式中M为所论组分的分子量。就是说,由于单位不统一,S′f_g不直接互为倒数,彼此间有一个分子量的因子。若两者的单位统一(如S_g′和f_g),则直接互为倒数。现以甲烷为例说明,在表(3—4)中,甲烷的f=0.45,按公式(1),则其克分子相
Question: Why is S ’and f not reciprocal each other in table (3-4) in the book “Gas Chromatography” written by Dalian Institute of Chemical Physics, Chinese Academy of Sciences? A: The relationship between S ’Is the actual molecular (or volume) relative response value, f is the weight correction factor. If expressed in more precise symbols, they should be S ’f_g. The relationship between the two: Where M is the molecular weight of the components in question. That is, S’f_g does not directly reciprocal each other due to the disunity of units, and each has a molecular weight factor. If the two units of unity (such as S_g ’and f_g), the direct reciprocal of each other. Now with methane as an example, in Table (3-4), methane f = 0.45, according to formula (1), the molecular phase