A clean-up method by photocatalysis for HPLC analysis of iprodione in dry basil.
Titanium dioxide was used as a photocatalyst to decompose interfering substances for a quantitative analysis of a fungicide (iprodione) in dry basil by HPLC. A quartz vial containing basil extract and titanium dioxide was irradiated with black light. The interfering substances were almost completely decomposed by 180 min of irradiation, whereas 88.3% of iprodione remained. The recovery of iprodione was 102.6% by the proposed method in basil extracts. This may have been due to different decomposition rates of the analyte and interfering substances.
Maeda
Osamu
O
House Food Analytical Laboratory Inc. Chiba 284-0033, Japan. o-maeda@food-analab.co.jp
Oikawa
Chie
C
Shiomi
Nobuo
N
Toriba
Akira
A
Hayakawa
Kazuichi
K
D000620:Aminoimidazole Carboxamide / Q000031:analogs & derivatives* / Q000032:analysis; D002384:Catalysis; D002851:Chromatography, High Pressure Liquid; D005659:Fungicides, Industrial / Q000032:analysis*; D006827:Hydantoins / Q000032:analysis*; D018649:Ocimum basilicum / Q000737:chemistry*; D010777:Photochemistry; D010936:Plant Extracts / Q000737:chemistry*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013997:Time Factors; D014025:Titanium / Q000737:chemistry*
D005659:Fungicides, Industrial; D006827:Hydantoins; D010936:Plant Extracts; C009495:titanium dioxide; D000620:Aminoimidazole Carboxamide; D014025:Titanium; C033148:iprodione