Research Article
Comparison of Three Solid Phase Materials for the Extraction of Carboxylic Acids from River Water Followed by 2D GC × GC-TOFMS Determination
Table 3
Raw and SPE filtered water characteristics.
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Sample |
SUVA = SAC/DOC (L/(mgm)) |
DOC (ppb) | Fractions of dissolved organic carbon (DOC) (in %) | Hydrophobic DOC | Hydrophilic DOC | Building blocks | Low molecular weight acids (LMWAs) |
| Raw water | 3.40 | 9106 | 7.3 | 92.7 | 12.2 | NQ | Silica filtered water | 2.88 | 1892 | 14.5 | 85.5 | 8.5 | 0.1 | C-18 filtered water | 1.37 | 6339 | 14.7 | 77 | 4.7 | NQ | Strata X filtered water | 2.93 | 1942 | 16.3 | 83.7 | 8.8 | 9.7 |
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SUVA: specific ultraviolet absorbance. SAC: spectral absorption coefficient. DOC: dissolved organic carbon.
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