Wyniki wyszukiwania - Biblioteka Nauki

1

Kolorymetryczna metoda oznaczania pozostałości parationu i metyloparationu w niektórych jarzynach i owocach

100%

Zadrozinska J.

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nr 3

2

Pozostałości fungicydów i insektycydów w owocach jagodowych i sokach z owoców jagodowych

100%

Lozowicka B. , Jankowska M. , Rutkowska E. , Kaczynski P.

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nr 3

EN

This paper presents results of pesticide residues research in berry fruits and fruit juices from the north-eastern Poland in 2005–2009. During five-year testing totally 460 samples of fruit and fruit juices were analysed (mainly raspberries, strawberries and currants). 48.7% (224) samples contained pesticide residues below maximum residue levels 38.0% (175) and above MRLs 10.7% (49). 140 active substances were searched and 32 were found, which generally constituted fungicides (dithiocarbamates, procymidone, flusiazole) and less insecticides (fenitrothion, fenazaquin, chloryrifos). Samples with forbidden plant protection products were also determined like tolylfluanid (F) in strawberries and endosulfan (I) in currants. In 25% samples more than one residue were found (from two to seven residues).

3

Wplyw pozostalosci spinosadu na wartosc odzywcza warzyw

88%

Sikorska K. , Wedzisz A.

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nr 1

101-107

4

Pozostałości środków ochrony roślin w płodach rolnych (rok 2009)

75%

Nowacka A. , Gnusowski B. , Walorczyk S. , Drozdzynski D. , Wojcik A. , Raczkowski M. , Holodynska A. , Barylska E. , Ziolkowski A. , Chmielewska E. , Rzeszutko U. , Giza I. , Jurys J. , Lozowicka B. , Kaczynski P. , Rutkowska E. , Jankowska M. , Szpyrka E. , Rupar J. , Rogozinska K. , Kurdziel A. , Slowik-Borowiec M. , Kuzmienko A. , Szala J. , Sadlo S.

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nr 4

EN

A total of 1 352 samples of fresh fruit, vegetables and arable crops of Polish origin were analysed in 2009 in five laboratories of the Institute of Plant Protection – National Research Institute. The monitoring programme covered 54 commodities and 132 pesticides including some isomers and breakdown products. Residues of 43 pesticides, mainly fungicides (24), were detected in 24.5% of samples analysed. Percentage of the samples without pesticide residues was equal to 75.5%. The residues lower than MRLs contained 23.1% of samples analysed. Violations of MRLs were found in 1.4% of the samples. The usage of not approved pesticides were stated in 3.3% of the samples analysed. Residues were detected in 43.3% of fruit samples especially in samples of raspberries (56.4%), apples (50.4%), sour cherries (48.5%), strawberries (44.8%), but the highest percentage of pesticide residues (66.7%) was found both in samples of greenhouse tomatoes and in the samples of celeriac. The samples of other products were less contaminated. Residues of dithiocarbamates were most often detected, in 13.4% of the samples. Four further pesticides captan, linuron, chloropiryfos and carbendazim were found in 8.7%, 5.1%, 4.1% and 4.1% of samples analysed respectively, while the other compounds in less than 2.6% of samples analysed.

5

Badanie pozostałości spinosadu, azadyrachtyny i rotenonu w materiale roślinnym oraz w glebie z wykorzystaniem zmodyfikowanej metody QuEChERS i oznaczenia techniką chromatografii cieczowej sprzężonej ze spektrometrem mas (UPLC-MS/MS)

75%

Drozdzynski D. , Kowalska J. , Remlein-Starosta D.

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nr 4

EN

Organic crop production must obey strict regulations. In recent years, it is promoted in Poland by government financial support which has been reflected in Rural Areas Development Plans for 2004–2006 and 2007–2013. Thanks to putting into effect the agricultural and environmental package „Organic production”, Polish farmers can apply for EU surcharges, which are targeted at those who by implementation of organic production do not contribute to environmental pollution. Implementation of organic production forced the farmers to obey the EU Council Regulation No 834/2007 on organic production and labeling of organic products. In other EU countries, farmers growing organic crops have access to a wider range of „ecological” insecticides than do the farmers in Poland; these include such insecticides as spinosad (sum of spinosyn A and spinosyn D), azadirachtin and rotenone. There was then a need to develop an analytical method for the mentioned insecticides before they are registered in Poland. In this work, the QuEChERS sample preparation technique was used prior to ultra performance liquid chromatographic/mass spectrometric determination of „ecological” insecticides in plant material (tomato and cabbage) as well as in soil. Very satisfactory analytical performance date were obtained at three spiking levels of 0.01, 0.05, 0.1 mg/kg. Limits of determination were 0.01 mg/kg in all cases. The method was used to analyze samples under grant No NN 310 4358 33r, entitled „Application of natural substances in protection of organically grown potato and cabbage”, being in progress in Institute of Plant Protection – National Research Institute.

6

Efekty toksycznego dzialania olowiu i wybranych insektycydow fosforoorganicznych w organizmie szczura. III. Wplyw olowiu na zawartosc pozostalosci fenitrotionu oraz foschloru w watrobie i mozgu szczurow

75%

Barski D. , Zasadowski A.

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tom 25

115-123

PL

Badano zmiany stężenia pozostałości insektycydów fosforoorganicznych w wątrobie i mózgu szczurów po intoksykacji pojedyńczej fenitrotionem, foschlorem oraz ołowiem z fenitrotionem i ołowiem z foschlorem. Octan ołowiu(II) podany w dawce 250 mg/kg m.c. przed fenitrotionem zarówno w sposób jednorazowy, jak i frakcjonowany (przez 5 dni po 50 mg/kg m.c.) spowodował trwający przez cały okres doświadczenia wzrost stężenia pozostałości tego insektycydu w badanych tkankach zwierząt w porównaniu z zatruwanymi wyłącznie fenitrotionem. Po dawce frakcjonowanej Pb(II) wzrost pozostałości fenitrotionu był większy. W wątrobie i mózgu szczurów, którym przed foschlorem podano, Pb(II) w niektórych okresach eksperymentu stwierdzano obniżony poziom pozostałości zastosowanego insektycydu w porównaniu ze zwierzętami zatruwanymi wyłącznie foschlorem. Zastosowanie ołowiu w dawce frakcjonowanej przed foschlorem w większym stopniu wpłynęło na obniżenie pozostałości tego insektycydu w badanych tkankach w porównaniu z zatruwanymi jednorazową dawką ołowiu i foschlorem.

EN

The concentration changes of phospho-organic insecticides in livers and brains of rats after a single intoxication with fenitrothion, foschlor as well as with combinations of lead and fenitrothion and foschlor, were examined. The lead acetate (II) provided in 250 mg/kg (body weight) prior to fenitrothion application both in a single dosage and fractionated for 5 days at 50 mg/kg a day (body weight) resulted in the increased concentration of this insecticide. The level of fenitrotion was stable throughout the period of examination in the analysed animal tissue when compared with intoxication with fenitrothion individually. The increase in residue was even larger after the fractionated dosage of Pb (II). In the liver and brain of rats intoxicated with Pb(II) prior to intoxication with foschlor, a decreased level of the applied insecticide residue was observed during some periods of the experiment. The lead application in the fractionated dosage prior to intoxication with foschlor resulted in the lowering the insecticide residue level to a larger degree in the examined tissue when compared with the rats intoxicated with a single dosage of lead and foschlor.