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Background. The use of pesticide leads to the increase in quantity and quality of yields, but may also result in presence of toxic contaminants in food products. Objective. The aim of this study was to evaluate presence of pesticide residues in raw agricultural products from the south-eastern region of Poland, to verify their compliance with the maximum residue levels’ (MRLs) as specified in the EU regulations concerning products present in the market, and to assess the acute risk related to consumption of these products. Material and Methods. Samples of raw agricultural products were obtained from production farms as a part of an official premarket monitoring of pesticide residues conducted on behalf of the Ministry of Agriculture and Rural Development, implemented in cooperation with the regional Inspectorates of Plant Health and Seed Inspection. The scheduled tests covered determination of 243 chemicals included in residue definitions for purposes of pesticide residues monitoring in or on food of plant origin (229 pesticides). Results. In 2015, a total of 328 samples of raw commodities collected from the south-eastern region of Poland were analysed for the presence of pesticide residues. Pesticide residues were detected in 84 samples (25.6%), while in 7 samples (2.1%) they exceeded MRLs. Violations of MRLs concerned 2 samples of Peking Cabbage, 3 samples of dill, 1 sample of raspberry and 1 sample of spinach. The pesticide residues were most often found in: fruit (38.3% of all fruit samples), herbs (35.3%) and vegetables (20.0%). The assessed acute exposure did not exceed the 100% acute reference dose (ARfD) in any sample. Conclusions. Monitoring of pesticide residues in the agricultural crops prevents penetration of products with MRLs exceeded or containing unacceptable pesticide residues into the market, thus protecting consumers’ health.
Background. Considering the fact that pesticides are commonly used in agriculture, continuous monitoring of these substances in food products is of great significance. Residues of these substances can be present in crops after harvest. Objective. The aim of this study was to evaluate presence of pesticide residues in fruiting vegetables from production farms in south-eastern region of Poland in 2012–2015. Material and methods. 138 samples were tested using accredited test methods. The monitoring programme covered determination of 242 pesticides. The tests covered tomato, cucumber and pepper crops. The test results were interpreted in accordance with criteria included in the European Commission recommendations published in the document SANCO/12571/2013 (now superseded by Document SANTE 2015), as well as on a basis of the maximum residue levels in force in the EU Member States. Results. Pesticide residues were found in 47 samples, representing 34% of all tested samples. 17 active substances were found, belonging to fungicides and insecticides. Azoxystrobin (38%), boscalid (28%) and chlorothalonil (21%) were most commonly found in fruiting vegetables testing samples. Non-compliances related to use of plant protection product not authorized for protection of a given crop were observed in 6% of analysed samples. However, pesticide residues of fruiting vegetables in quantities that exceed the maximum residue levels (NDP, ang. MRLs), as well as substances which use for plant protection is forbidden were no found. Conclusions. Crops monitoring is used to determine to what extent such products are contaminated with pesticide residues, and ensures protection of customer health.
Background. Poland is a leading grower/producer of berries in Europe that are either eaten raw or processed. As well as berries this includes fruit such as grapes, strawberries and other small fruits. Testing for the presence of active substances in Plant Protection Products, (PPP), in such fruit is however important, as part of measures taken to minimise human intake. Objective. To determine the incidence of pesticide residues in berries harvested from South-Eastern Poland in 2009-2011. Material and methods. Chromatographic separation followed by analytical detection was performed on 250 samples of various test fruits using an accredited methodology: GC/ECD/NPD, together with spectrophotometric detection wherever necessary, according to PN-EN ISO/IEC 17025. As part of previous monitoring, 126 active substances were identified in 2009, 132 in 2010 and 153 in 2011; levels were compared to Maximum Residue Limits (MRLs). Results. Analyses showed that 46.4% of samples contained PPPs of which 4% exceeded the MRL. The most were found in raspberries, (58.8% of all tested), followed by 58.3% redcurrants, and gooseberries as well as 50% grapes. The most frequently found active substances of PPPs were pyrimethanil (15.6%), dithiocarbamates (12.4%), procymidone (8%), cyprodinil (5.6%) and difenoconazole (5.2%). The highest MRL exceedances were found in blackcurrants. Testing also revealed many examples of pesticides not recommended for the protection of specific crops: propiconazole in gooseberries, cyprodinil, flusilazole, iprodione, pyrimethanil in blackcurrants and folpet and captan in raspberries. Furthermore, active substances whose use in PPPs have been forbidden since 2008 were also detected, ie. endosulfan in blackcurrants and strawberries, fenitrothion in black and red currants as well as procymidone in raspberries, blackcurrants and strawberries. These data are consistent to those obtained from the whole of Poland and the European Union (EU). Conclusions. Most pesticides were present in raspberries, redcurrants, gooseberries and grapes of which fungicides were the most frequently detected. These results are in keeping with other similar studies.
Background. Peaches, sour cherries, nectarines, apricots, plums and cherries are fruit commonly known as “stone fruit”. Their nutritional properties namely, vitamins, minerals, fiber and numerous microelements, make them a very important component of human diet. As fruit trees can be attacked by numerous diseases and pests, chemical protection of these crops is used. Therefore, it is important that the relevant governmental agencies or institutions ensure correct application of pesticides Objective. The aim of the study was to evaluate the occurrence of pesticide residues in stone fruits south-eastern region of Poland in 2012–2014 in order to provide data to estimate health risk to consumers. Material and methods. Validated analytical methods based on liquid / liquid extraction coupled with gas chromatography with electron capture and nitrogen phosphorus detection (GC-ECD/NPD) and spectrophotometry (dithiocarbamates residues) were used for the analysis. 92 samples of stone fruits were tested for the presence of pesticide residues. Results. 13 of all samples (14%) contained pesticide residues. 7 active substances were detected, including 5 fungicides: boscalide, bupirimate, difenoconazole, dithiocarbamates and captan, and 2 insecticides: cypermethrin and pirimicarb. In the analysed samples, the use of not recommended plant protection products in orchard crops were found. However, neither maximum residue levels (MRLs) recommended by the Regulation (EC) No 396/2005 were exceeded nor pesticides being unapproved by the Regulation (EC) No 1107/2009 detected in the analysed samples. Conclusions. Lack of plant protection products for control specific diseases or pests in crops results in the use of formulations not recommended for use in certain orchard crops. On a basis of results reported in previous years it can be concluded that occurrence of pesticide residues in stone fruit samples dropped significantly.
Field tests verified and evaluated a pesticide’s active ingredient transfer to honeybee hives from rapeseed crops protected according to current programs. Samples of rapeseed flowers, leaves, and soil were collected, as well as of worker honeybees, the brood, and honey from hives located in the crops. They were evaluated for the presence of four insecticides and five fungicides. In flower samples and leaf samples flutriafol at plantation 1 and azoxystrobin at plantation 2 were found at the highest levels. In honeybees and in the brood, five AIs were detected at plantation 1, of which the highest levels were observed for flutriafol (25.5 μg/kg of honeybee) and picoxystrobin (7.3 μg/kg of brood). At plantation 2, residues of three and two AIs were detected in honeybees and in the brood, respectively, of which chlorpyrifos was at the highest level (19.5 μg/kg of honeybee, and 2.8 μg/kg of brood). For both plantations, residues of three AIs were found in honey. The AI levels in honey did not exceed 3.8% of acceptable maximum residue level at plantation 1, and 2.8% at plantation 2. The percentage of acceptable daily intake did not exceed 0.01%.
Currant ranks second place in the world production of berries after strawberries. Currants are important primarily due to the content of vitamins, mineral salts, organic compounds and many micronutrients. The aim of this study was to assess the occurrence of pesticide residues in the currants analyzed in the Laboratory of Pesticide Residue Analysis in Rzeszow in 2009–2013. A total of 143 samples were tested using the gas chromatography technique (GC/ECD/NPD – gas chromatography with electron capture and nitrogen phosphorus detection) and spectrophotometric method for the determination of dithiocarbamates. The control programme included the detection of 130 active substances in 2009, 137 in 2010, 152 in 2011, 166 in 2012 and 187 active substances in 2013. The results were compared with the maximum residue limits (MRLs). 43% of samples tested contained pesticide residues, and exceeding of MRLs values was stated in 10 samples. The identified residues which exceeded MRLs were chlorpyrifos-methyl, cypermethrin, endosulfan, fenazaquin, flusilazole and procymidone. The fungicides were the most frequently detected in the all analysed samples. The most frequently detected substances were: dithiocarbamates (30 samples), cypermethrin (14 samples) and difenoconazole (12 samples).
The aim of the study was to evaluate the occurrence of pyrimidine fungicide residues in fruits and vegetables in 2012–2013. Validated analytical methods based on liquid / liquid extraction coupled with gas chromatography with electron capture and nitrogen phosphorus detection (GC-ECD/NPD – gas chromatography with electron capture and nitrogen phosphorus detection) were used for analysis. The total of 704 samples of fruits and vegetables were tested for the presence of pesticide residues, 49 of all samples had residues of pyrimidine fungicides. Cyprodinil and pyrimethanil were the most commonly found residues. In the analysed samples two cases of irregularity associated with the use of preparations of pyrimidine were found, the first was related with the use of nonrecommended plant protection product, the second was related with exceeding the maximum residue levels.
In 2013, in Laboratory of Pesticide Residue Analysis of Institute of Plant Protection – National Research Institute, Regional Experimental Station in Rzeszow, a total of 297 crop samples collected from the south-eastern part of Poland were analysed for the presence of pesticide residues. Pesticide residues were detected in 83 (27.9%) analysed samples. Violations of Maximum Residue Levels (MRL) were found in 2 samples (0.7%). The analyses revealed the substances not recommended for a given crop in 17 samples and the banned substance in Poland in 2 samples. The pesticide residues were found most often in the following crops: gooseberry (83.3% of the gooseberry samples), strawberry (71.4%) and apple (55.6%). The following fungicide residues were detected the most: pyrimethanil (7.4% samples), boscalid (6.7%) and cyprodinil (6.7%). The detected insecticide residues were mostly related to pirimicarb (1.7%) and cypermethrin (1.0%). The residues of herbicides were found in one sample (linuron in celeriac).
The aim of this work was to assess the actual level of pesticide intake along with the eaten vegetables grown under covers: tomatoes, cucumbers, sweet peppers and early vegetables – radishes, lettuce, in 2010–2012, as well as a dietary risk assessment to the consumers affected by short‐term and long‐term exposure. A total of 74 samples of vegetables grown under cover were analysed. Pesticide residues were detected in 26 samples (35% of analysed samples). The calculations of the long and short term exposures revealed that vegetables grown under cover could be consumed, both by toddlers and by adults without any adverse health effects.
In 2012, a total of 236 crop samples collected from the south‐eastern part of Poland were analysed. Pesticide residues were detected in 29 (12%) analysed samples. No exceeding of Maximum Residue Limits was stated. Among the fungicide residues mostly detected were dithiocarbamates (3% samples) and azoxystrobin (2%). The insecticide residues detected were mostly related to chlorpyrifos (3%). The residues of herbicides were found in one sample (flurochloridone in parsley root). In 2012, 7 reports within the Rapid Alert System for Food and Feed were issued and they were concerned with the application of the substances not recommended for a given crop.
Raspberries belong to a broad group of berry plants. The cultivation of raspberries is an important, rapidly developing sector of orchard production in Poland. 57% of produced raspberries is processed, 14% as eaten fresh, and 29% intended for export. The aim of this study was to detect pesticide residues in the berries originating from the region of south-eastern Poland in 2009–2012. A total of 82 samples were tested using the gas chromatography technique (GC/ECD/NPD – gas chromatography with electron capture and nitrogen phosphorus detection). The control programme included the detection of 129 active substances in 2009, 136 in 2010, 151 in 2011 and 165 active substances in 2012. The results were compared with the maximum residue limits (MRLs). 50% of samples tested contained pesticide residues, and exceeding of MRLs values was stated in 12 samples. These were the residues of esfenvalerate and procymidone, not allowed to apply in raspberry crops. The fungicides were the most frequently detected in the all analysed samples among the other: pyrimethanil (33% of samples), procymidone (19.5%), cyprodinil (13.4%) and iprodione (12.2%). The results on pesticides detected in the material tested were comparable with the ones given by other authors.
The aim of this study was to evaluate the utility of the QuEChERS (quick, easy, cheap, effective, rugged and safe) sample preparation technique coupled with gas chromatography with electron capture and nitrogen phosphorus detection (GC-ECD/NPD – gas chromatography with electron capture and nitrogen phosphorus detection) for the analysis of pesticide residues in peppermint. Validation experiments were carried out for 10 compounds belonging to the group of herbicides at two spiking levels from 0.01 to 0.524 mg/kg. The obtained results were highly satisfactory and met the criteria recommended by the European Union document SANCO/12495/2011. The compounds showed recoveries in the range of 70–120% and repeatability (relative standard deviation) equal to or less then 20%, with the except for chloridazon and S-metolachlor. The method used, which was based on the QuEChERS allowed to obtain high quality pesticide residue results with a reduced number of analytical steps and a lower glassware and solvent consumption.
In 2011–2013 in the Laboratory of Pesticide Residue Analysis of Plant Protection Institute – National Research Institute in Rzeszów 339 samples of fruits, vegetables and herbs were tested for the presence of dithiocarbamate fungicide residues. Dithiocarbamates were found in 27 (8.0%) analysed samples. No exceeding of Maximum Residue Levels (MRLs) was stated. Dithiocarbamates were detected most frequently in: gooseberries (45.4% of the samples of the crop), red currants (33.3%), black currants (29.6%), pears (18.7%) and peaches (14.3%).
The paper presents the results on pesticide residues in brassica vegetables carried out in 2010–2012 and risk estimation of consumers’ health depending on the exposure (long‐term and short‐term). 122 samples were analysed on the pesticide residue content. The pesticide residues were detected in 44 (36%) of all analysed samples. The most often detected residues were chlorpyrifos and azoxystrobin. In 2 samples of Chinese cabbage, pyrimethanil residues were found, as an active substance of plant protection product not recommended for protection of this crop. Maximum Residue Limits were exceeded in 6% of analysed samples. The results of risk estimation of the long‐term and short‐term exposure to consumers health revealed that the level of detected pesticide residues in the cabbage vegetables after their consumption did not pose a threat to people’s health.
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