Characterization of Polyester Coatings Intended for Food Contact by Different Analytical Techniques and Migration Testing by LC-MSn
Abstract
:1. Introduction
2. Materials and Methods
2.1. Reagents and Standards
2.2. Samples and Extraction Procedures
2.2.1. Volatile and Semi-Volatile Compounds Extraction Methods
2.2.2. Non-Volatile Compounds Extraction Method
2.3. Migration Tests
2.4. Equipment Instrumental Analysis
2.4.1. Fourier-Transform Infrared Spectroscopy (FTIR)
2.4.2. Confocal Raman Microscopy
2.4.3. Gas Chromatography (GC)
2.4.4. Matrix-Assisted Laser Desorption coupled to Time-of-Flight Mass Spectrometry (MALDI-TOF MS)
2.4.5. Liquid Chromatography Coupled to Ion Trap Mass Spectrometry (LC-MSn)
3. Results and Discussion
3.1. FTIR-ATR and Confocal Raman Microscopy Analysis
3.2. GC Analysis
3.2.1. P&T GC-MS
3.2.2. Semi-Volatile Compounds by GC-MS
3.2.3. HS-SPME-GC-MS
3.3. MALDI-TOF MS
3.4. Analysis of Migration Tests by LC-MSn
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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TR (min) | CAS Nº | Compound | m/z | CM1 | CM2 | CM3 |
---|---|---|---|---|---|---|
6.38 | 123-72-8 | Butanal | 44, 72 | X | X | X |
6.57 | 78-93-3 | 2-butanone | 43, 72 | X | ||
7.69 | 78-83-1 | Isobutanol | 43, 74 | X | ||
8.66 | 71-36-3 | 1-butanol * | 41, 56 | X | X | X |
9.31 | 80-62-6 | Methyl methacrylate | 41, 69, 100 | X | ||
10.92 | 108-88-3 | Toluene * | 65, 91 | X | X | X |
12.24 | 66-25-1 | Hexanal * | 43, 56 | X | ||
13.59 | 100-41-4 | Ethyl benzene | 91, 106 | X | ||
13.85 | Xylene structure | 91, 106 | X | X | X | |
14.50 | Xylene structure | 91, 106 | X | X | X | |
15.28 | 111-76-2 | 2-butoxyethanol * | 57, 87 | X | X | X |
15.42 | 108-94-1 | Cyclohexanone | 55, 69, 98 | X | ||
16.45 | Trimethylbenzene | 105, 120 | X | |||
17.18 | Trimethylbenzene | 77, 105, 120 | X | X | X | |
17.61 | 124-13-0 | Octanal | 41, 56, 69 | X | ||
17.99 | Trimethylbenzene | 59, 105, 120 | X | |||
18.01 | 13429-07-7 | 1-(2-methoxypropoxy)-2-propanol | 59, 105, 120 | X | ||
18.28 | 104-76-7 | 2-ethyl-1-hexanol | 57, 70, 83 | X | ||
18.57 | 105-05-5 | 1,4-diethylbenzene | 105, 119, 134 | X | ||
18.77 | 108-95-2 | Phenol * | 66, 94 | X | ||
19.30 | Unknown (benzene structure) | 119, 134 | X | |||
19.32 | 112-07-2 | 2-butoxyethyl acetate | 43, 57, 87 | X | X | |
19.79 | 98-86-2 | Acetophenone | 70, 105, 120 | X | ||
20.00 | 124-19-6 | Nonanal * | 28, 32, 57, 70 | X | X | X |
20.26 | Unknown (benzene structure) | 119, 134 | X | |||
20.82 | 1119-40-0 | Dimethyl glutarate | 59, 100, 129 | X | X | |
22.20 | 112-31-2 | Decanal | 28, 41, 57, 70 | X | X | X |
23.44 | 95-16-9 | Benzothiazole | 69, 108, 135 | X | ||
24.79 | Unknown (benzene structure) | 119, 131, 147 | X | |||
25.00 | Unknown (naphthalene structure) | 117, 131, 160 | X |
TR (min) | CAS Nº | Compound | m/z | SI | RSI | CM1 | CM2 | CM3 |
---|---|---|---|---|---|---|---|---|
9.34 | 104-76-7 | 2-ethyl-1-hexanol | 43, 57, 79, 83 | 709 | 955 | X | ||
10.56 | 93-58-3 | Methyl benzoate | 77, 105, 136 | 750 | 854 | X | ||
11.03 | 1587-15-1 | Dimethyl maleate | 43, 71, 103 | 739 | 922 | X | ||
11.77 | 65-85-0 | Benzoic acid | 51, 77, 105, 122 | 805 | 956 | X | ||
12.17 | 112-41-4 | 1-dodecene | 43, 55, 69, 83 | 934 | 935 | X | ||
12.44 | 527-54-8 | 3,4,5-trimethylphenol | 91, 121, 136 | 760 | 885 | X | ||
12.95 | 627-93-0 | Dimethyl adipate | 101, 114, 143 | 700 | 818 | X | ||
13.01 | 100-97-0 | Hexamethylenetetramine * | 42, 112, 140 | 617 | 905 | X | ||
13.11 | 1014-60-4 | 1,3-di-tert-butylbenzene | 41, 57, 91, 175 | 744 | 832 | X | ||
13.32 | 105-60-2 | ε-caprolactam * | 55, 85, 113 | 766 | 849 | X | ||
13.38 | 112-05-0 | Nonanoic acid | 60, 73, 115 | 700 | 773 | X | ||
13.50 | 629-62-9 | Pentadecane | 43, 57, 71, 85 | 765 | 867 | X | ||
13.55 | 77-99-6 | Trimethylolpropane | 41, 57, 71, 86 | 903 | 916 | X | ||
13.75 | 627-91-8 | Methyl adipate | 55, 74, 100, 114, 129 | 713 | 882 | X | ||
14.03 | 487-68-3 | 2,4,6-trimethylbenzaldehyde | 91, 119, 147 | 859 | 946 | X | ||
14.20 | 85-44-9 88-99-3 | Phthalic acid pure or anhydride phthalic | 50, 76, 104, 148 | 776 | 880 | X | ||
14.56 | 2282-84-0 | Methyl 2,4,6-trimethylbenzoate | 91, 119, 147, 178 | 860 | 862 | X | ||
14.88 | 124-04-9 | Adipic acid | 41, 55, 87, 100 | 725 | 823 | X | ||
15.83 | 480-63-7 | 2,4,6-trimethylbenzoic acid | 119, 146, 164 | 900 | 902 | X | ||
15.95 | 6745-75-1 | 2,5-dimethyl-4-methoxybenzaldehyde | 77, 163, 164 | 744 | 765 | X | ||
16.09 | 7310-95-4 | 2-hydroxy-5-methylisophthalaldehyde | 77, 90, 107, 136, 164 | 825 | 831 | X | ||
16.44 | 7534-94-3 | Isobornyl methacrylate | 41, 69, 95, 136 | 927 | 928 | X | ||
16.51 | 2233-18-3 | 4-hydroxy-3,5-dimethylbenzaldehyde | 77, 91, 121, 149, 150 | 892 | 918 | X | ||
16.63 | 487-69-4 | 2,4-dihydroxy-6-methylbenzaldehyde | 106, 123, 151 | 714 | 745 | X | ||
16.95 | 96-76-4 | 2,4-di-tert-butylphenol * | 57, 191, 206 | 781 | 834 | X | X | X |
17.03 | 1459-93-4 | Dimethyl isophthalate * | 76, 135, 163, 194 | 860 | 924 | X | X | |
17.66 | 143-07-7 | Dodecanoic acid | 43, 60, 73 | 853 | 901 | X | ||
18.09 | 4098-71-9 | Isophorone diisocyanate | 81, 110, 123 | 703 | 791 | X | X | |
18.81 | Unknown (acrylate structure) | 55, 68 | X | |||||
19.18 | Unknown (alcohol structure) | 69, 83, 97 | 726 | 842 | X | X | ||
19.35 | 100-21-0 121-91-5 | Terephthalic acid or isophthalic acid | 65, 120, 149, 166 | 716 | 753 | X | ||
19.46 | Unknown (alkane structure) | 57, 71, 85 | X | X | ||||
19.82 | 24157-81-1 | 2,6-diisopropylnaphthalene | 155, 197, 212 | 793 | 834 | X | X | |
19.89 | Unknown (ester of adipic acid) | 55, 111, 143 | X | |||||
20.19 | 544-63-8 | Tetradecanoic acid | 43, 60, 73, 129 | 883 | 893 | X | X | |
20.67 | 26896-48-0 | Tricyclodecanedimethanol | 67, 79, 91, 119, 147 | 826 | 832 | X | ||
20.82 | 104-66-5 | Diphenyl glycol | 77, 121, 214 | 815 | 824 | X | ||
21.16 | 502-69-2 | 6,10,14-trimethylpentadecan-2-one | 43, 58, 71 | 908 | 939 | X | ||
21.20 | 3645-00-9 | Methyl-(2-hydroxyethyl) terephthalate | 76, 163, 181 | 832 | 907 | X | ||
21.35 | 1002-84-2 | Pentadecanoic acid | 60, 73, 129 | 700 | 767 | X | X | |
21.39 | 84-69-5 | Diisobutyl phthalate * | 41, 57, 149 | 858 | 932 | X | X | X |
21.62 | Unknown (alcohol structure) | 69, 83, 97 | 846 | 897 | X | |||
21.92 | 82304-66-3 | 7,9-di-tert-butyl-1-oxaspiro [4.5]deca-6,9-diene-2,8-dione | 41, 57, 175, 205 | 709 | 709 | X | ||
22.10 | 112-39-0 | Methyl palmitate * | 43, 74, 87 | 891 | 932 | X | X | X |
22.16 | Unknown (eicosene structure) | 43, 55, 70, 83 | X | |||||
22.27 | Unknown (acid structure) | 55, 69, 81, 96 | X | X | ||||
22.45 | 84-74-2 | Dibutyl phthalate * | 149 | 892 | 926 | X | ||
22.51 | 57-10-3 | Hexadecanoic acid | 43, 60, 73, 129 | 922 | 962 | X | X | |
22.58 | Unknown (alcohol structure) | 82, 95, 109 | X | |||||
23.27 | Unknown (phthalate structure) | 56, 76, 163, 181 | X | |||||
23.43 | 91-76-9 | Benzoguanamine | 43, 76, 103, 187 | 921 | 937 | X | X | |
23.46 | Unknown (phthalate structure) | 56, 163, 181 | X | |||||
23.72 | Unknown (phthalate structure) | 149 | 747 | 766 | X | |||
23.83 | Unknown (alcohol structure) | 43, 57, 69, 83, 97 | 851 | 939 | X | |||
23.98 | 112-62-9 | Methyl oleate | 55, 69, 74, 83, 97 | 888 | 907 | X | X | |
23.98 | 629-92-5 | Nonadecane | 43, 57, 71 | 754 | 855 | X | ||
24.24 | 112-61-8 | Methyl stearate | 74, 87, 143 | 771 | 898 | X | X | X |
24.39 | Unknown compound (octadecenoic acid structure) | 55, 69, 83, 97 | 888 | 888 | X | X | ||
24.64 | 57-11-4 | Stearic acid | 43, 57, 73 | 876 | 931 | X | X | |
24.78 | 607-58-9 | 1-(benzyloxy)naphthalene * | 91, 65, 115, 234 | 717 | 819 | X | ||
24.88 | 80-05-7 | Bisphenol A (BPA) * | 91, 119, 213 | 855 | 860 | X | X | |
25.00 | Unknown (alkane structure) | 43, 57, 71, 85 | X | |||||
25.42 | 77-90-7 | Acetyltributyl citrate (ATBC) * | 129, 185, 259 | 771 | 901 | X | ||
25.63 | Unknown (acetophenone structure) | 77, 91, 119, 147 | 861 | 906 | X | |||
25.72 | Unknown (benzoic acid structure) | 77, 105 | 735 | 892 | X | |||
25.97 | Unknown (isophthalic acid structure) | 82, 149, 167, 205 | X | |||||
26.15 | Unknown compound (octadecenoic acid structure) | 55, 69, 85, 97 | 779 | 790 | X | |||
26.17 | Unknown (phenol structure) | 121, 227, 256 | X | |||||
26.45 | 1235-74-1 | Methyl dehydroabietate | 239, 299 | 700 | 711 | X | ||
26.78 | 103-23-1 | Bis(2-ethylhexyl) adipate (DEHA) * | 57, 70, 111, 129 | 750 | 943 | X | ||
26.89 | Unknown (alkane structure) | 57, 71, 85 | X | |||||
26.96 | 115-86-6 | Triphenyl phosphate | 77, 94, 326 | 752 | 908 | X | ||
27.57 | 10546-70-0 | n-propylbenzamide | 77, 105, 163 | 809 | 955 | X | X | X |
27.64 | 120-55-8 | Di(ethylene glycol) dibenzoate | 77, 105, 149 | 888 | 967 | X | ||
27.78 | Unknown (alkane structure) | 43, 57, 71 | X | |||||
28.07 | 117-81-7 | Bis(2-ethylhexyl) phthalate (DEHP) * | 149, 167 | 841 | 916 | X | X | X |
28.25 | Unknown (isophthalic acid structure) | 82, 149, 231 | X | |||||
28.39 | Unknown (phthalate or benzoic acid structure) | 149, 167, 235, 253 | X | X | X | |||
28.87 | Unknown (phthalate or benzoic acid structure) | 149, 167, 235 | X | |||||
29.11 | 6197-30-4 | Octocrylene * | 178, 204, 248 | 613 | 840 | X | ||
29.75 | Unknown (phthalate structure) | 82, 104, 149, 383 | X | |||||
29.47 | Unknown (alkane structure) | 43, 57, 71 | X | |||||
30.20 | Unknown (phthalate structure) | 82, 104, 149, 383 | X | |||||
30.39 | 111-02-4 | Squalene * | 69, 81 | 677 | 787 | X | X | X |
35.76 | Unknown (ester of adipic acid) | 55, 83, 129 | X | |||||
36.70 | Unknown (phthalate structure) | 83, 149 | X | |||||
38.36 | Terephthalic acid ester of neopentyl glycol cyclic dimer (C26H28O8) | 76, 104, 132, 149, 338, 383, 468 | 773 | 961 | X | X | X |
TR (min) | CAS Nº | Compound | m/z | SI | RSI | CM1 | CM2 | CM3 |
---|---|---|---|---|---|---|---|---|
5.72 | Xylene structure | 91, 106 | 814 | 930 | X | X | X | |
5.94 | 140-88-5 | Ethyl acrylate | 55, 27, 99 | 700 | 818 | X | ||
6.1 | 108-94-1 | Cyclohexanone | 55, 42, 98, 69 | 893 | 913 | X | ||
6.3 | 111-71-7 | Heptanal | 43,70,55 | 811 | 876 | X | X | X |
6.4 | 111-76-2 | 2-butoxyethanol | 57,45,87 | 856 | 878 | X | X | X |
6.9 | 126-30-7 | Neophentyl glycol | 56,73,31 | 839 | 881 | X | X | X |
7.1 | 5131-66-8 | 1-butoxy-2-propanol | 45,57,87 | 823 | 878 | X | X | |
7.6 | Trimethylbenzene | 105,12 | X | |||||
8.1 | Trimethylbenzene | 105,12 | 730 | 924 | X | X | X | |
8.2 | 124-13-0 | Octanal | 41,57,84 | 749 | 944 | X | X | X |
8.5 | 584-03-2 | 1,2-butanediol | 59,43,73 | 785 | 810 | X | X | X |
8.6–9.6 | 56-81-5 | Glycerol | 61,43,31 | 735 | 804 | X | X | X |
8.63 | Trimethylbenzene | 105, 120 | 767 | 848 | X | |||
8.7 | 104-76-7 | 2-ethyl-1-hexanol | 57,41,70 | 764 | 877 | X | X | X |
8.8 | 106-65-0 | Dimethyl succinate | 115, 55, 87 | 789 | 943 | X | ||
8.84 | 100-51-6 | Benzyl alcohol | 79, 108 | 785 | 867 | X | ||
9.4 | 98-86-2 | Acetophenone | 105, 77, 120 | 704 | 827 | X | ||
9.5 | 103-09-3 | 2-ethylhexyl acetate | 43,56,70 | 759 | 775 | X | ||
9.5 | 111-87-5 | 1-octanol | 56, 70, 83 | 768 | 891 | X | X | |
9.6 | 3101-60-8 | 4-tert-butylphenyl glycidyl ether | 191, 135, 206 | 700 | 683 | X | ||
9.8 | Tetramethylbenzene | 119,91,134 | X | X | ||||
9.86 | 112-07-2 | 2-butoxyethyl acetate | 43,57,87 | 794 | 859 | X | X | X |
10.05 | 1120-21-4 | Undecane | 43,57,71,85 | 896 | 945 | X | X | |
10.1 | 124-19-6 | Nonanal | 41,57,29,70 | 948 | 948 | X | X | X |
10.4 | 488-23-3/527-53-7/934-74-7 | Tetramethylbenzene | 119,134 | 715 | 798 | X | X | X |
10.6 | 1119-40-0 | Dimethyl glutarate | 59,100,129 | 862 | 900 | X | X | X |
11.05 | 18829-56-6 | Trans-2-nonenal | 41, 55, 70 | 761 | 865 | X | X | |
11.4 | 124-07-2 | Octanoic acid | 60, 73, 43 | 836 | 894 | X | X | X |
11.55 | 112-34-5 | Diethylene glycol monobutyl ether | 45, 57, 29 | 717 | 917 | X | X | X |
11.6 | 112-41-4 | 1-codecene | 43, 55, 69, 83, 97 | 836 | 894 | X | ||
11.7 | 112-40-3 | Dodecane | 43, 57, 71, 85 | 932 | 933 | X | X | X |
11.8 | 112-31-2 | Decanal | 41, 57, 82, 95 | 948 | 951 | X | X | X |
11.99 | 87-61-6/120-82-1 | Trichlorobenzene | 180, 145, 109, 74 | 878 | 901 | X | X | |
12.07 | 122-99-6 | 2-phenoxyethanol | 94, 138, 77 | 911 | 912 | X | X | X |
12.2 | 95-16-9 | Benzothiazole | 135, 108, 69 | 855 | 937 | X | X | X |
12.4 | 627-93-0 | Dimethyl adipate | 59, 114, 143 | 811 | 895 | X | X | X |
12.7 | 3913-81-3 | 2-decenal | 41, 55, 70, 83 | 778 | 903 | X | X | X |
12.88 | 112-05-0 | Nonanoic acid | 55,41,73 | 739 | 847 | X | X | X |
13.1 | 7473-98-5 | 2-hydroxy-2-methylpropiophenone | 57,77,105 | 739 | 837 | X | ||
13.3 | Unknown (methyl-naphthalene structure) | 142, 115 | X | |||||
13.3 | 629-50-5 | Tridecane | 43,57,71 | 901 | 935 | X | ||
13.4 | Unknown (aldehyde structure) | 41, 57, 68, 82 | 738 | 901 | X | X | ||
13.44 | Unknown (benzaldehyde structure) | 147,119,91 | 898 | 913 | X | |||
13.8-13.9 | Unknown (naphthalene structure) | 131,160,145 | X | X | ||||
14.2 | 6846-50-0 | 2,2,4-trimethyl-1,3-pentanediol diisobutyrate | 71,43,56,83 | 814 | 840 | X | X | X |
14.3 | 2463-77-6 | 2-undecenal | 70,57,41 | 760 | 806 | X | X | X |
14.4 | 334-48-5 | Decanoic acid | 60,73,129,41 | 701 | 778 | X | X | X |
14.8 | 629-59-4 | Tetradecane | 57,43,71,85 | 865 | 932 | X | X | X |
14.95 | Unknown (aldehyde structure) | 41,57,82 | 917 | 959 | X | X | X | |
15.2 | Unknown (naphthalene structure) | 156,141 | X | X | ||||
15.87 | Unknown (alcohol structure) | 55,41,69,83 | X | X | ||||
16.28 | 4792-15-8 or 2615-15-8 | Pentaethylene glycol or hexaethylene glycol | 45, 89 | 700 | 794 | X | ||
16.38 | 56554-89-3 | 14-octadecenal | 82,57,41 | 715 | 742 | X | X | X |
16.45 | 96-76-4 | 2,4-di-tert-butylphenol | 191,206 | 884 | 906 | X | X | X |
16.8 | Unknown (alcohol structure) | 57,41,69,83 | X | X | ||||
16.9 | Unknown (ester of carboxylic acid) | 129, 111, 55, 83 | X | |||||
17.5 | 84-66-2 | Diethyl phthalate | 149,177 | 935 | 949 | X | X | X |
17.5 | Unknown (alkane structure) | 57,71,43,85 | 807 | 895 | X | X | X | |
17.74 | 124-25-4 | Tetradecanal | 57,41,82 | 775 | 912 | X | X | X |
18.5 | Unknown (alcohol structure) | 43,55,69,83 | 915 | 936 | X | X | X | |
18.7 | 24157-81-1 | 2,6-diisopropylnaphthalene | 197,155,212 | 737 | 877 | X | X | |
18.8 | 629-78-7 | Heptadecane | 57,43,71,85 | 757 | 885 | X | X | X |
20.04 | Unknown (alkane structure) | 43, 57, 71, 85 | X | X | X | |||
20.18 | 118-60-5 | 2-ethylhexyl salicylate | 120, 138, 250 | 738 | 890 | X | X | |
20.3 | 110-27-0 | Isopropyl myristate | 102, 228, 129, 185 | 720 | 758 | X | ||
20.8 | Unknown (phthalate structure) | 149, 223, 167 | X | X | X | |||
20.9 | Unknown (alcohol structure) | 69, 97, 55 | 789 | 847 | X | |||
21.46 | 82304-66-3 | 7,9-di-tert-butyl-1-oxaspiro[4.5]deca-6,9-diene-2,8-dione | 205, 175, 189 | 843 | 858 | X | X | X |
TR (min) | m/z (Adduct) * | Product Ions | Proposed Compound | CT | Sample |
---|---|---|---|---|---|
16.6, 17.4 | 584.3 (NH4+), 567.3 (H+), 589.3 (Na+), 605.3 (K+) | 2PA+2CHDM (L) | I | CM3 | |
18.8, 64.8 | 419.2 (H+), 436.2 (NH4+), 441.2 (Na+), 457.2 (K+) | 201, 149 | PA+2CHDM | I | CM2, CM3 |
28.4 | 636.3 (NH4+), 619.3 (H+), 641.3 (Na+), 657.3 (K+) | 3PA+NPG+2EG (C) | III | CM2, CM3 | |
29.5 | 423.2 (Na+), 401.2 (H+), 418.3 (NH4+), 439.2 (K+) | 2PA+NPG | I | CM2 | |
35.5 | 385.1 (H+), 407.1 (Na+), 423.0 (K+), 402.1 (NH4+) | 193, 149, 341, 359 | 2PA+2EG (C) | III | CM2, CM3 |
39.7 | 425.2 (Na+), 441.2 (K+), 420.2 (NH4+), 403.2 (H+) | 2PA+2EG (L) | I | CM2, CM3 | |
39.7 | 761.3 (H+), 778.4 (NH4+), 783.4 (Na+), 799.3 (K+) | 3PA+2NPG+CHDM (L) | I | CM2, CM3 | |
44.6 | 504.3 (NH4+), 509.3 (Na+), 525.2 (K+), 487.3 (H+) | 2PA+2NPG (L) | I | CM2 | |
51.6, 53.0 | 683.4 (Na+), 678.3 (NH4+), 699.3 (K+) | 3PA+3BD (C) | III | CM1 | |
52.3 | 427.1 (H+), 449.1 (Na+), 444.1 (NH4+), 465.1 (K+) | 217, 149, 341, 193, 359 | 2PA+NPG+EG (C) | III | CM2, CM3 |
54.5, 55.6 | 441.1 (H+), 463.1 (Na+), 458.1 (NH4+) | 149, 167 | 2PA+CHDM | I | CM2 |
54.9, 56.3, 56.8 | 469.2 (H+), 486.2 (NH4+), 507.1 (K+), 491.2 (Na+) | 383, 235, 149, 162, 217, 401 | 2PA+2NPG (C) | III | CM1, CM2, CM3 |
58.6, 59.6 | 483.2 (H+), 500.2 (NH4+), 505.2 (Na+), 521.1 (K+) | 415, 231, 149, 383, 397 | 2PA+NPG+HD (C) | III | CM1 |
60.3, 60.7 | 683.4 (Na+), 678.3 (NH4+), 699.3 (K+), 661.3 (H+) | 3PA+2NPG+EG (C) | III | CM2, CM3 | |
60.8, 61.9 | 509.4 (H+), 531.4 (Na+) | 491, 383, 235, 149, 257, 217 | 2PA+NPG+CHDM (C) | III | CM3 |
61.3 | 497.2 (H+), 514.2 (NH4+), 519.2 (Na+), 535.1 (K+) | 479, 415, 231, 149 | 2PA+2HD (C) | III | CM1 |
62.5, 62.8 | 725.3 (Na+), 720.3 (NH4+), 703.2 (H+), 741.2 (K+) | 235, 469, 401 | 3PA+3NPG (C) | III | CM1, CM2, CM3 |
62.7 | 781.5 (Na+), 797.4 (K+), 776.4 (NH4+) | 3PA+2CHDM+EG (L) | I | CM2 | |
63.4, 64.0 | 917.2 (Na+), 912.2 (NH4+), 933.2 (K+), 895.2 (H+) | 4PA+3NPG+EG (C) | III | CM3 | |
63.6, 63.9 | 739.3 (Na+), 734.3 (NH4+), 755.2 (K+), 717.3 (H+) | 3PA+2NPG+HD (C) | III | CM1 | |
64.4, 64.7 | 753.3 (Na+), 748.3 (NH4+), 731.3 (H+), 769.2 (K+) | 3PA+NPG+2HD (C) | III | CM1 | |
65.2, 65.4 | 767.3 (Na+), 762.3 (NH4+), 745.3 (H+), 783.2 (K+) | 3PA+3HD (C) | III | CM1 | |
63.9 | 612.5 (NH4+), 617.5 (Na+), 633.4 (K+) | 3PA+3EG (L) | I | CM2, CM3 | |
64.8 | 743.3 (H+), 760.3 (NH4+), 765.3 (Na+), 781.2 (K+) | 3PA+2NPG+CHDM (C) | III | CM3 |
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Lestido-Cardama, A.; Vázquez-Loureiro, P.; Sendón, R.; Bustos, J.; Santillana, M.I.; Paseiro Losada, P.; Rodríguez Bernaldo de Quirós, A. Characterization of Polyester Coatings Intended for Food Contact by Different Analytical Techniques and Migration Testing by LC-MSn. Polymers 2022, 14, 487. https://doi.org/10.3390/polym14030487
Lestido-Cardama A, Vázquez-Loureiro P, Sendón R, Bustos J, Santillana MI, Paseiro Losada P, Rodríguez Bernaldo de Quirós A. Characterization of Polyester Coatings Intended for Food Contact by Different Analytical Techniques and Migration Testing by LC-MSn. Polymers. 2022; 14(3):487. https://doi.org/10.3390/polym14030487
Chicago/Turabian StyleLestido-Cardama, Antía, Patricia Vázquez-Loureiro, Raquel Sendón, Juana Bustos, Mª Isabel Santillana, Perfecto Paseiro Losada, and Ana Rodríguez Bernaldo de Quirós. 2022. "Characterization of Polyester Coatings Intended for Food Contact by Different Analytical Techniques and Migration Testing by LC-MSn" Polymers 14, no. 3: 487. https://doi.org/10.3390/polym14030487