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preface to fifteenth edition

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2.8 SECTION 2<br />

TABLE 2.2<br />

Physical and Chemical Symbols and Definitions (Continued)<br />

B. Chemical reactions (continued)<br />

Name Symbol SI unit Definition<br />

S<strong>to</strong>ichiometric number<br />

<br />

Surface concentration mol · m 2 B n B /A<br />

Volume fraction B V B /V i<br />

Symbols for particles and nuclear reactions:<br />

Alpha particle Muon, positive <br />

Beta particle , Neutron n, n 0<br />

Deuteron d, 2 H Pho<strong>to</strong>n <br />

Electron e, e Pro<strong>to</strong>n p, p <br />

Helion h Tri<strong>to</strong>n t, 3 H<br />

Muon, negative <br />

<br />

The meaning of the symbolic expression indicating a nuclear reaction:<br />

initial incoming particles outgoing particles final<br />

,<br />

nuclide or quanta or quanta nuclide<br />

Examples: 14 N(, p) 17 O, 23 Na(, 3n) 20 Na<br />

States of aggregation:<br />

am amorphous solid cd condensed phase (solid or liquid)<br />

aq aqueous solution cr crystalline<br />

as, aqueous solution at fl fluid phase (gas or liquid)<br />

infinite dilution lc liquid crystal<br />

g gas vit vitreous substance<br />

l liquid mon monomeric form<br />

s solid pol polymeric form<br />

sln solution ads species adsorbed on a substance<br />

C. Chroma<strong>to</strong>graphy<br />

Name Symbol Definition<br />

Adjusted retention time t R tR tR tM<br />

Adjusted retention volume V R VR VR VM<br />

Average linear gas velocity L/t M<br />

Band variance 2<br />

Bed volume<br />

V g<br />

Capacity, volume<br />

Q v<br />

Capacity, weight<br />

Q w<br />

Column length<br />

L<br />

Column temperature<br />

<br />

Column volume V col V col Dd 2 c/4<br />

Concentration at peak maximum C max<br />

Concentration of solute in mobile C M<br />

phase<br />

Concentration of solute in stationary<br />

C S<br />

phase<br />

Density of liquid phase<br />

Diffusion coefficient, liquid film<br />

Diffusion coefficient, mobile<br />

phase<br />

L<br />

D f<br />

D M

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