Agriculture Reference
In-Depth Information
Table 4.3. List of Common PFC Compounds That Can Migrate into Food Samples with
Their Corresponding Q1 and Q3 Transitions Used in LC-MS/MS Analysis
Q1
Mass
(amu)
Q3
Mass
(amu)
PFC
Formula
Abbreviation
Perfluorobutanoic acid
CF 3 (CF 2 ) 2 COOH
PFBA
213
169
Perfluoropentanoic acid
CF 3 (CF 2 ) 3 COOH
PFPA
263
219
Per uoro- n -hexanoic acid
CF 3 (CF 2 ) 4 COOH
PFHxA (C6)
313
269/119
Peruoro- n -heptanoic acid
CF 3 (CF 2 ) 5 COOH
PFHpA (C7)
363
319/169
Peruoro- n -octanoic acid
CF 3 (CF 2 ) 6 COOH
PFOA (C8)
413
369/169
Per
uoro- n -nonanoic acid
CF 3 (CF 2 ) 7 COOH
PFNA (C9)
463
419/219
Per
uoro- n -decanoic acid
CF 3 (CF 2 ) 8 COOH
PFDA (C10)
513
469/219
Peruoro- n -undecanoic acid CF 3 (CF 2 ) 9 COOH
PFUnDA (C11)
563
519/269
Peruoro- n -dodecanoic acid CF 3 (CF 2 ) 10 COOH
PFDoDA (C12)
613
569/319
Peruoro- n -tridecanoic acid
CF 3 (CF 2 ) 11 COOH
PFTriDA (C13)
663
619/319
Peruoro- n -tetradecanoic
acid
CF 3 (CF 2 ) 12 COOH
PFTeDA (C14)
713
669/319
Perfluorobutanesulfonic acid CF 3 (CF 2 ) 3 SO 3 H
PFBS (S4)
299
80/99
Perfluorohexanesulfonic
acid
CF 3 (CF 2 ) 5 SO 3 H
PFHxS (S6)
399
80/99
Peruoro- n -heptanesulfonic
acid
CF 3 (CF 2 ) 6 SO 3 H
PFHpS (S7)
449
80/99
Perfluorooctanesulfonic acid CF 3 (CF 2 ) 7 SO 3 H
PFOS (S8)
499
80/99
Perfluorooctane sulfonamide CF 3 (CF 2 ) 6 SO 2 NH 2
PFOSA (S8)
498
78/478
N -Methylperuoro-1-
octanesulfonamide
CF 3 (CF 2 ) 7 SO 2 NHCH 3 N -MeFOSA
512
169
N -Ethylperuoro-1-
octanesulfonamide
CF 3 (CF 2 ) 7 SO 2 NHC 2 H 5 N -EtFOSA
526
169
2-( N -Methylperuoro-1-
octanesulfonamido)-
ethanol
CF 3 (CF 2 ) 7 SO 2 N
CH 3 (C 2 H 4 OH)
N -MeFOSE
616
59
2-( N -Ethylper uoro-1-octa-
nesulfonamido)-ethanol
CF 3 (CF 2 ) 7 SO 2 NC 2 H 5
(C 2 H 4 OH)
N -EtFOSE
630
59
International Agency for Research on Cancer (IARC) classi
ed azo-dyes as potential
carcinogenic substances. One of the
rst methods used to detect Sudan dyes was
reversed-phase chromatography with APCI ionization in positive mode [55,56]. Most
methods used to detect Sudan dyes are based on LC separation, with MS detection
recently replacing UV detection due to the decrease in the analysis time. Initial LC
-
MS/MS methods were based on APCI and used a simple solvent extraction followed
by filtration to detect Sudan dyes I-IV in chili powder and tomato-based products and
were capable of detecting these dye contaminants at low part per billion levels [55].
These methods screened for only
57] or
ESI [58]. However, Sudan dyes are among a series of dyes that are used in textile
five or fewer dyes by either APCI [55
-
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