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The article presents a study on the level of pesticide in the natural waters of Valencia, Spain. It states that water samples from surface river, irrigation channel and lake water were collected between February and July 1992 and were analyzed using capillary gas chromatography. The result showed that more than one pesticide residue are contained in the samples collected, including arochlors, Parathion, and organohalogenated pesticides.

Abstract: During 2006–2008, a monitoring program was conducted on 29 target compounds, including PCDD/Fs and dl-PCBs, comprising 150 randomly collected individual food samples marketed in the Region of Valencia, Spain, grouped into 8 categories (vegetables, cereals, fats and oils, eggs, milk and dairy products, fish products, meat and meat products and fish oil). For PCDD/Fs, the highest frequency of detection corresponds to 1,2,3,4,6,7,8-HpCDD, OCDD, 2,3,4,7,8-PeCDF; and PCBs 118, 105 and 156 were the more frequent dl-PCBs. The food groups presenting higher contamination, expressed as toxic equivalents (WHO-TEQs), were fish oil (6.38pgWHO-TEQg−1 fat), fish (1.21pgWHO-TEQg−1 w.w.) and milk and dairy products (0.90pgWHO-TEQg−1 fat). Of all analysed samples, only two fish oils presented levels higher than the EU limits for total WHO-TEQ. The average PCDD/Fs and dl-PCBs intakes were estimated as 2.86pgWHO-TEQkg−1 b.w.d−1 and 4.58pgWHO-TEQkg−1 b.w.d−1, for adults and children, respectively, using the deterministic method for chronic exposure. The main contributors to total intake for adults were fish (59%), milk and dairy products (19%), and fat and oils (9%). The average daily intake for adults (2.86pgWHO-TEQkg−1 b.w.d−1) is within range of TDI recommended by the WHO (1–4pgWHO-TEQkg−1 b.w.d−1), and slightly above the TWI and PTMI adopted by SCF and JECFA respectively. [Copyright &y& Elsevier]

Abstract: The aim of this study was to investigate the pesticide residues in market fruits (oranges, tangerines, nectarines, peaches and khakis) from one Valencian Cooperative (Spain) and to conduct a monitoring of 32 organophosphorous, organonitrogen and organohalogenated pesticides and nine dithiocarbamate fungicides (DTCFs) usually applied on cultures of this area. Extracts were obtained by an official procedure for routine analysis based on ethyl acetate extraction. Residues of pesticides were determined by gas chromatography with nitrogen phosphorous detector (NPD), electron-capture detector (ECD) and mass spectrometry (MS) detectors. Mean recoveries obtained at fortification levels between 0.05 and 5mgkg−1 were in range of 56–97% with relative standard deviations (RSDs) from 5% to 18%. The limits of quantification (LOQs) were in range of 0.1–140μgkg−1 and lower than maximum residue limits (MRL) established by the Spanish legislation. 73% of the samples had no detectable residues. Of the contaminated samples, 13.8% exceeded the maximum residue limits (MRLs). Peaches and oranges showed the lowest contamination rates (13.9% and 21.3%, respectively). The contamination and violation rates were similar than the percentages recorded in previous monitoring studies in the same Community. Estimated daily intakes (EDIs) were calculated for these compounds in basis of European maximum residue limits (MRL) and residues found in the analysed samples and were compared with the acceptable daily intakes (ADIs). [Copyright &y& Elsevier]