From:  Occurrence of alkylphenols in drinking water samples by solid phase extraction gas chromatography-mass detection analysis

 Analytical methods, detected compounds, concentration found, and LOD of the employed methodology in the reviewed studies on APs determination in water samples.

Sample typeLocationAnalytesMethodConcentration (ng/L)LOD (ng/L)References
Ground, surface, marine, and wastewaterChina4-NP, 4-OP, 4-tOPLLE-GC-MS
(DCM + BSFTA)
4-NP: 2–17
4-OP: 26–1,810
4-tOP: 7
2–6[6]
River waterPhilippines4-NP, 4-OPSPE-LC-MS/MS
(HLB)
4-NP: 173–1,877
4-OP: 17–62
-[30]
River waterChina4-NP, 4-OP, 4-tOPSPE-GC-MS
(HLB; BSTFA + TMCS, 99:1)
4-NP: 38–266
4-OP: 15
4-tOP:14–34
2–7[34]
Surface waterPoland4-NP, 4-tOPMIP-LC-DAD< LOD50,000[36]
Raw and treated waterBrazil4-NP, 4-OPSPE-GC-MS
(PS-DVB; BSTFA + TMCS, 99:1)
LC-MS/MS
4-NP: 0.0429
4-OP: 0.002–0.0334
-[20]
WastewaterMexico4-NP, 4-OPSPE-GC-MS
(HLB; BSTFA + TMCS, 99:1)
4-NP: 0.2–18.9
4-OP: 0.8–58.8
2[31]
Raw and treated wastewaterCanada4-NP, 4-OPSPE-LC-MS/MS
(HLB, MAX, C18)
4-NP: 46
4-OP: 132
-[19]
River and canal waterChina4-NPMSPE-LC-DAD< LOD17[37]
Surface waterMexico4-NPSPE-GC-MS
(C18; BSTFA + TMCS, 99:1)
4-NP: 85.524–37[32]
Drinking water Czech Republic4-NP, 4-OP, 4-tOPSPE-LC-MS/MS
(C18; Dansyl chloride)
4-NP: 4.7
4-tOP: 1.3
-[38]
Drinking waterSpain4-NP, 4-OPDLLME-UHPLC-MS
(NaHDES)
< LOD450–2,990[39]
Mineral drinking waterJapan4-NPHPLC-ECD4-NP: 3019–78[40]
Drinking waterSpain4-NP, 4-OP, 4-tOPMASE-LC-MS/MS4-NP: 81–2508–16[41]
Drinking waterIran4-NP, 4-tOPDLLME-GC-MS4-NP: 182–933
4-tOP: 1.5–19
0.28–0.76[42]
Tap waterSpain4-NP, 4-OP, 4-tOPSPE-GC-MS
(C18; BSTFA)
4-NP: 0.2–37.9
4-OP: 0.95–76.7
4-tOP: 0.1–9.5
0.6–0.9This study

BSTFA: N,O-Bis(trimethylsilyl)trifluoroacetamide; C18: octadecylsilica; DLLME: dispersive liquid-liquid microextraction; ECD: electron capture detector; FAD: fluorescence array detector; GCMS: gas chromatography-mass spectrometry; HLB: hydrophilic–lipophilic balanced; HPLC: high performance liquid chromatography; LC-MS/MS: liquid chromatography-tandem mass spectrometry; LLE: liquid-liquid extraction; LOD: limit of detection; MASE: membrane assisted solvent extraction; MAX: mixed-mode anion eXchange; MIP: molecularly imprinted polymer; MSPE: magnetic solid-phase extraction; NaHDES: natural hydrophobic deep eutectic solvent; PS-DVB: polystyrene–divinylbenzene; SPE: solid-phase extraction; TMCS: trimethylchlorosilane; UHPLC: ultra-high performance liquid chromatography; UV: ultraviolet.