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Table 2. Matrix Surrogates and Their Respective Ranges
| Table 2. Matrix Surrogates and Their Respective Ranges | |||
| Range | Surrogate pairs | ||
| Type | Values | First Surrogate | Second Surrogate |
| aK-values | 0.07 to 3.0 | hexafluorobenzene | fluorobenzene |
| hexafluorobenzene | 1,4-difluorobenzene | ||
| pentafluorobenzene | fluorobenzene | ||
| pentafluorobenzene | 1,4-difluorobenzene | ||
| 3.0 to 6.3 | fluorobenzene | o-xylene-d10 | |
| fluorobenzene | chlorobenzene-d5 | ||
| 1,4-difluorobenzene | o-xylene-d10 | ||
| 1,4-difluorobenzene | chlorobenzene-d5 | ||
| 6.3 to 20 | o-xylene-d10 | 1,2-dichloroethane-d4 | |
| o-xylene-d10 | 1,2-dibromoethane-d4 | ||
| chlorobenzene-d5 | 1,2-dichloroethane-d4 | ||
| chlorobenzene-d5 | 1,2-dibromoethane-d4 | ||
| 20 to 150 | 1,2-dichloroethane-d4 | ethyl acetate-2C13 | |
| 1,2-dichloroethane-d4 | acetone-d6 | ||
| 1,2-dibromoethane-d4 | ethyl acetate-2C13 | ||
| 1,2-dibromoethane-d4 | acetone-d6 | ||
| 150 to 15000 | ethyl acetate-2C13 | 1,4-dioxane-d8 | |
| ethyl acetate-2C13 | pyridine-d5 | ||
| acetone-d6 | 1,4-dioxane-d8 | ||
| acetone-d6 | pyridine-d5 | ||
| bp (°C) | 80 to 111 | toluene-d8 | 80 °Ca |
| chlorobenzene-d5 | 80 °C | ||
| 111 to 131 | toluene-d8 | chlorobenzene-d5 | |
| toluene-d8 | bromobenzene-d5 | ||
| chlorobenzene-d5 | 80 °C | ||
| 131 to 155 | toluene-d8 | bromobenzene-d5 | |
| chlorobenzene-d5 | bromobenzene-d5 | ||
| chlorobenzene-d5 | 1,2-dichlorobenzene-d4 | ||
| 155 to 181 | chlorobenzene-d5 | 1,2-dichlorobenzene-d4 | |
| bromobenzene-d5 | 1,2-dichlorobenzene-d4 | ||
| bromobenzene-d5 | decafluorobiphenyl | ||
| 181 to 206 | bromobenzene-d5 | decafluorobiphenyl | |
| 1,2-dichlorobenzene-d4 | decafluorobiphenyl | ||
| 1,2-dichlorobenzene-d4 | 1,2,4-trichlorobenzene-d3 | ||
| 206 to 220 | 1,2-dichlorobenzene-d4 | 1,2,4-trichlorobenzene-d3 | |
| decafluorobiphenyl | 1,2,4-trichlorobenzene-d3 | ||
| decafluorobiphenyl | 1-methylnaphthalene-d10 | ||
| 220 to 250 | decafluorobiphenyl | 1-methylnaphthalene-d10 | |
| decafluorobiphenyl | 1-methylnaphthalene-d10 | ||
aThe effects relating to an analyte with a boiling point at or less than 80 °C are assumed to be negligible.