Type of sample |
Preliminary sample preparation |
Extraction QuEChERS |
Clean-up dSPE |
Preparation of purified extract for analysis |
Time of sample preparation |
References |
A |
- add 3 mL of hot water
- dissolution |
- add 3 mL of ACN
- shake (30 s)
- add 6 g of MgSO4 and 1.5 g of NaCl and shake (1 min)
- centrifugation (3000 rpm, 2 min) |
- 1 mL of solvent extract
- add of 150 mg of MgSO4, 50 mg of PSA and shake (30 s)
- centrifugation (3000 rpm, 2
min) |
0.5 mL of final extracts for analysis |
6 min |
[54] |
- add 10 mL of water, 150 µL of NH4OH and homogenization
(1 min) |
- add 10 mL of ACN
- homogenization (1 min)
- add 4 g of MgSO4 and shake (1 min)
- centrifugation (8000 rpm, 10 min) |
- |
10 µL of final extracts for analysis |
13 min |
[55] |
- heating the sample in water bath at 45°C
(1 min) and homogenization |
- add 5.0 mL of aqueous 0.1 mol/L Na4EDTA and 5.0 mL of ACN
- shake (3 min)
- add 6 g of MgSO4 and 1.5 g of NaCl and shake (1 min)
- centrifugation (2200 rpm, 8 min) |
- 2 mL of solvent extract
- add of 120 mg of MgSO4, 100 mg of PSA and shake
(3 min)
- centrifugation (1800 rpm,
8 min) |
- filtration
(PVDF, 0.2 µm)
- 1 mL of final extracts for analysis with IS |
24 min |
[56] |
- |
- add of 10 mL of water and 10 mL of ACN
- shake (1 min)
- add 4 g of MgSO4,1 g of NaCl, 1 g of trisodium citrate and 0.5 g of disodium citrate and shake (1 min)
- centrifugation (3000 rpm, 5 min) |
- 6 mL of solvent extract
- add of 900 mg of MgSO4, 150 mg of PSA and shake (1 min)
- centrifugation (3000 rpm,
5 min) |
- |
13 min |
[57] |
B |
freeze drying |
- add of 7.5 mL of water and 10 mL of ACN
- shake (1 min)
- add of 0.5 g of disodium citrate, 1 g of trisodium citrate, 4 g of MgSO4,1 g of NaCl and shake (1 min)
- centrifugation (600 rpm, 5 min) |
- 1 mL of solvent extract
- add of 750 mg of MgSO4, 125 mg of PSA, 15 mg of GCB and shake (2 min)
- centrifugation (600 rpm,
5 min) |
- filtration
(PVDF, 0.2 µm) |
14 min |
[58] |
B |
- |
- add 15 mL of an ACN–water mixture (2:1, v/v) and homogenization (30 s)
- add of 0.5 g of disodium citrate, 1 g of trisodium citrate, 4 g of MgSO4,1 g of NaCl and shake (1 min)
- centrifugation (4500 rpm, 2.5 min)
-freezing out clean-up (−26°C for 2 h) |
- 5 mL of solvent extract was decantation and filtration through a cotton wool
- add 500 mg of MgSO4, 450 mg of C18, 200 mg of PSA and 50 mg of GCB and shake (2 min)
- centrifugation (4500 rpm,
2.5 min) |
- 3 mL of extract was evaporated under a stream of nitrogen and the residue was re-dissolved in 1.5 mL toluene |
~ 2.5 h |
[45] |
A |
- |
- add 10 mL of water and 10 mL of ACN
- add of 0.5 g of disodium citrate, 1 g of trisodium citrate, 4 g of MgSO4,1 g of NaCl and shake (1 min)
- centrifugation (3000 rpm, 5 min) |
- add 25 mg mL of MgSO4, 150 mg/mL of PSA and shake (30 s)
-centrifugation (3000 rpm, 5 min) |
- |
11.5 min |
[58] |
B |
frozen |
- add 25 mg mL of MgSO4 and C18, 150 mg/mL of PSA and shake (30 s)
- centrifugation (3000 rpm,
5 min) |
A |
- add 10 mL of water
- dissolution |
- add 10 mL of ACN
- add the salts kit (4 g MgSO4 and 0.5 g NaCl) and shake (1 min)
- centrifugation (4400 rpm, 3 min) |
- 1 mL of solvent extract
- add a purification kit (150 mg MgSO4, and 25 mg PSA) and shake (1 min)
- centrifugation (5000 rpm,
1 min) |
0.5 mL of final extracts for analysis |
6 min |
This work |
B |
freeze drying |
- add 10 mL of water and 10 mL of ACN and shake (30 s)
- add of 3 mL of n-hexane and salts kit (4 g MgSO4 and 0.5 g NaCl) and shake (30 s)
- centrifugation (4400 rpm, 3 min) |