Pesticide residues in liquid pekmez (grape molasses)
2008
Erdoğrul, Özlem
In this study 32 pesticide residues and eight polybrominated diphenlyl ether (PBDE) congeners were measured in seven liquid samples from Kahramanmaraş, Turkey. A new method based on the best recovery was column extraction with n-hexane/acetone followed by gas chromatography electron-capture detection (GC-ECD), and mass spectrometry (GC-MS). Limit of Detection (LOD) was 0.02 ng/g for PCBs and PBDEs and 0.05 ng/g for the others. α-HCH, γ-HCH, HCB, and Heptachlor were being measured in all LP samples. The sum of HCHs, DDTs and PCBs in samples was 1.56, 0.76 and 5.42 ng/g, respectively. p,p′-DDD, p,p′-DDT, o,p′-DDT, cis-nonachlor, β-endosulfan, endrin, PCB 118, PCB 138, PCB 180 and PBDEs were not detected. The mean values of α-HCH, β-HCH, γ-HCH, HCB were 0.72, 2.03, 1.92, 3.58 and α-chlordan, trans-nonachlor, heptachlor, malathion, aldrin, bromophos methyl, bromophos ethyl, cis-HCE, trans-HCE, chlordan, α-endosulfan, dieldrin were 2.44, 0.27, 1.25, 1.27, 0.91, 0.10, 0.50, 0.26, 0.63, 2.44, 0.30, 0.30 ng/g respectively. The mean values of p,p′-DDE, o,p′-DDE, o,p′-DDD were 0.26, 0.48, 0.68 and PCB 28, PCB 52, PCB 101, PCB 153 were 2.35, 35.27, 0.16, 0.18 ng/g, respectively.
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