Table 1.
Effect of selected organic solvents on UPE in the complete (Fe2+-EGTA-H2O2) and incomplete (Fe2+-EGTA-H2O2) modified Fenton systems.
| Solvent | Final Solvent Concentration in Reaction Milieu [µmol/L] | Complete System Fe2+-EGTA-H2O2 |
Incomplete System Fe2+-EGTA-H2O |
||
|---|---|---|---|---|---|
| Without Solvent | With Solvent | Without Solvent | With Solvent | ||
| Solvents that inhibit light emission from Fe2+-EGTA-H2O2 system | |||||
| Methanol | 0.105 | 4217 ± 79 (4203; 109) * | 1609 ± 130 (1563; 109) | 753 ± 18 (756; 21) | 786 ± 82 (756; 21) |
| 0.21 | 3925 ± 164 (3871; 108) * | 1202 ± 316 (1355; 365) | 740 ± 32 (727; 46) | 734 ± 17 (730; 23) | |
| 0.42 | 3109 ± 340 (3237; 353) * | 1142 ± 65 (1171; 60) | 654 ± 21 (655; 15) | 626 ± 11 (630; 16) | |
| Ethanol | 0.105 | 3971 ± 248 (3937; 198) * | 1890 ± 35 (1879; 23) | 812 ± 26 (815; 38) | 789 ± 15 (787; 19) |
| 0.21 | 4062 ± 91 (4033; 114) * | 1735 ± 56 (1746; 52) | 733 ± 20 (723; 16) | 725 ± 12 (728; 15) | |
| 0.42 | 3765 ± 165 (3778; 262) * | 1331 ± 47 (1337; 54) | 642 ± 21 (633; 31) | 618 ± 23 (627; 27) | |
| Propan-1-ol | 0.105 | 4214 ± 78 (4203; 101) * | 1457 ± 120 (1447; 90) | 672 ± 25 (673; 27) | 660 ± 16 (651; 23) |
| 0.21 | 4136 ± 175 (4254; 244) * | 1369 ± 86 (1392; 91) | 707 ± 16 (712; 27) | 710 ± 18 (715; 24) | |
| 0.42 | 3407 ± 198 (3389; 119) * | 1222 ± 58 (1230; 72) | 617 ± 14 (615; 10) | 640 ± 62 (631; 46) | |
| n-Pentanol | 0.105 | 2999 ± 206 (2939; 103) * | 1975 ± 106 (1967; 129) | 761 ± 31 (754; 20) | 752 ± 52 (737; 18) |
| 0.21 | 2829 ± 164 (2884; 172) * | 2116 ± 139 (2084; 1510) | 690 ± 15 (684; 15) | 679 ± 13 (680; 17) | |
| 0.42 | 2801 ± 159 (2741; 137) * | 1825 ± 55 (1819; 25) | 607 ± 17 (595; 30) | 579 ± 39 (567; 22) | |
| Acetonitrile | 0.105 | 3243 ± 361 (3353; 164) | 3249 ± 52 (3266; 49) | 794 ± 14 (787; 18) | 778 ± 11 (780; 18) |
| 0.21 | 3550 ± 110 (3577; 173) * | 2894 ± 51 (2872; 62) | 699 ± 20 (704; 30) | 705 ± 52 (683; 88) | |
| 0.42 | 3347 ± 188 (3254; 1420) * | 2576 ± 65 (2560; 92) | 603 ± 20 (601; 28) | 572 ± 13 (572; 16) | |
| DMSO | 0.105 | 3624 ± 242 (3650; 170) * | 1207 ± 46 (1197; 34) | 759 ± 52 (738; 26) | 754 ± 23 (761; 37) |
| 0.21 | 3921 ± 969 (3932; 663) * | 1200 ± 54 (1198; 71) | 708 ± 18 (705; 20) | 690 ± 19 (694; 15) | |
| 0.42 | 3641 ± 193 (3722; 172) * | 1072 ± 36 (1057; 46) | 625 ± 18 (631; 26) | 587 ± 20 (588; 12) | |
| Benzyl acetate | 0.105 | 3224 ± 144 (3246; 106) * | 2105 ± 131 (2116; 85) | 580 ± 17 (578; 26) | 551 ± 22 (560; 25) |
| 0.210 | 3125 ± 133 (3174; 171) * | 2144 ± 27 (2143; 29) | 689 ± 15 (681; 19) | 674 ± 14 (681; 13) | |
| 0.42 | 3173 ± 107 (3205; 124) * | 2017 ± 65 (2019; 87) | 580 ± 17 (578; 26) | 551 ± 22 (560; 25) | |
| Solvents that enhance light emission from Fe2+-EGTA-H2O2 system | |||||
| Acetone | 0.105 | 3270 ± 96 (3243; 103) * | 4427 ± 135 (4454; 71) | 704 ± 17 (703; 20) | 715 ± 29 (711; 42) |
| 0.21 | 3015 ± 176 (2950; 197) * | 4174 ± 96 (4165; 110) | 681 ± 15 (682; 10) | 672 ± 19 (669; 20) | |
| 0.42 | 3240 ± 221 (3299; 271) * | 4179 ± 99 (4194; 96) | 639 ± 14 (637; 11) | 617 ± 14 (615; 21) | |
| Ethyl acetate | 0.105 | 3260 ± 184 (3196; 155) * | 5960 ± 196 (5932; 167) | 467 ± 20 (461; 33) | 463 ± 13 (459; 22) |
| 0.21 | 3528 ± 149 (3492; 148) * | 5377 ± 141 (5303; 193) | 710 ± 10 (714; 11) | 720 ± 5 (721; 5) | |
| 0.42 | 3043 ± 360 (3209; 500) * | 5280 ± 238 (5176; 3330 | 731 ± 18 (733; 27) | 702 ± 11 (705; 18) | |
| Amyl acetate | 0.105 | 3478 ± 222 (3439; 207) * | 4623 ± 213 (4651; 160) | 747 ± 18 (752; 24) | 749 ± 14 (750; 14) |
| 0.21 | 3057 ± 159 (3082; 135) * | 4153 ± 261 (4063; 380) | 736 ± 25 (731; 27) | 739 ± 18 (733; 26) | |
| 0.42 | 3125 ± 91 (3121; 66) * | 4193 ± 187 (4215; 98) | 595 ± 29 (600; 410 | 570 ± 18 (562; 19) | |
| Butyl butyrate | 0.105 | 3364 ± 117 (3406; 167) * | 6475 ± 462 (6372; 680) | 747 ± 18 (752; 24) | 749 ± 14 (750; 14) |
| 0.21 | 3315 ± 110 (3307; 163) * | 18,124 ± 1412 (18,633; 1751) | 727 ± 14 (727; 17) | 739 ± 28 (730; 17) | |
| 0.42 | 3303 ± 137 (3295; 204) * | 19,338 ± 738 (19,310; 761) | 686 ± 10 (687; 11) | 700 ± 21 (705; 20) | |