• Title, Summary, Keyword: pesticide residue

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Comparison of Pesticide Residues in Perilla Leaf, Lettuce and Kale by Morphological Characteristics of Plant (형태적 특성이 다른 들깻잎, 상추, 케일 중 농약 잔류량 비교)

  • Son, Kyeong-Ae;Im, Geon-Jae;Hong, Su-Myeong;Kim, Jin Bae;Ihm, Yang Bin;Ko, Hyeon Seok;Kim, Jang Eok
    • The Korean Journal of Pesticide Science
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    • v.16 no.4
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    • pp.336-342
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    • 2012
  • This study was carried out in order to compare the residue levels of pesticides among lettuce, kale and perilla leaf depending on the morphological characteristics of plant. Residue levels were investigated at the zero, second, fifth days after last application, 9 species of systemic or non-systemic pesticide were twice applied with 7 days interval by knapsack power sprayer with 2 heads fan shape nozzle. Ratios of leaf area to weight ($cm^2$ $g^{-1}$) were 58 of perilla leaf, 27 of lettuce and 23 of kale. Ratios of leaf area to weight of perilla leaf was 2.1 times higher than that of lettuce. Residue levels of perilla leaf were 1.3 to 2.3 times higher than those of lettuce at the day of spraying and 1.3 to 3.3 times higher at the fifth day. Therefore the differences of pesticide residues between perilla leaf and lettuce were affected by the ratio of leaf area to weight. Residue levels in lettuce were 2.4 to 7.3 times higher than those in kale at the day of spraying because the adhesive effect of pesticide particles on kale leaf was low.

Development of Proficiency Testing Scheme on Pesticide Residues in Crops for Testing Institute (농약 숙련도 시험용 농약 표준시료(PTMs) 제조방법 확립 및 적용성 평가)

  • Kwon, Jong-Kook;Lee, Kieseung;Lee, Seok-Ki
    • Journal of The Korea Society For Environmental Analysis
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    • v.20 no.4
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    • pp.229-238
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    • 2017
  • This paper reports the establishment of a proficiency testing (PT) scheme for pesticide residue in crops using relevant international standards (KS Q ISO 13528 & ISO/IEC 17043). The proficiency testing materials (PTMs) are made from freeze-dried Welsh onion powder spiked with the pesticide Procymidone. The results of the analysis were reported by 25 participating organizations and evaluated via Horwitz standard deviation and z-score. The histogram and box plot of the Procymidone analyses clearly show that 22 (88%) of the 25 participating organizations can be approved as qualified test institutions for Procymidone residue analysis in crops.

Multi-Pesticide Residue Method for Organopesticide Analysis (유기농약 분석을 위한 Multi-Pesticide Residue Method)

  • 김우성;이봉헌
    • Journal of Environmental Science International
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    • v.6 no.4
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    • pp.385-389
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    • 1997
  • Pesticide residues were extracted with 70% acetone and transferred to dichloromethane. Extracts were applied to open-column chromatography with florisil and alumina-N. The final extract was analyzed by gas chromatography with electron-capture detector(GC /ECD) and nitrogen-phosphorus detector(GC/NPD). Recoveries of the 17 organochlorine pegticides were ranged from 60.8 to 84.9% and those of 15 organophosphate pesticides, from 70.5% to 100.0%(except phosmet and azlnphos-methyls. The minimum detectable levels of this analytical method were low(0.021-0.058mg/kg).

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Removal Effect of Residue Pesticide of Organic Acid Salt in Alkali Aqueous Solution (알칼리 수용액상에서 유기산염의 잔류농약 제거효과)

  • Lee, Jae-duk;Lee, Man-Ho
    • Applied Chemistry for Engineering
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    • v.10 no.6
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    • pp.907-912
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    • 1999
  • In this study, removal effect of residue pesticides on vegetable and fruit using organic acid salt in alkali solution were investigated by gas chromatography and measurement of detergency. Generally, for the removal methods of residue pesticides and oily pollution were used chemical detergent or organic solvent. Specially, in our experiment, we only used material of food additives and trisodium citrate were superior to other organic acid salt. It was investigated that removal effect of pesticides was superior to chemical detergent.

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A Safety Survey of Pesticide Residues in Fruit Products Circulated in Chungcheongnam-do Province, Korea (충남도내 유통 과일류의 잔류농약 안전성 조사)

  • Lee, Kang-Bum;Kim, Nam-Woo;Song, Nak-Soo;Lee, Jung-Ho;Jung, Sang-Mi;Shin, Myoung-Hee;Choi, Seon-Sil;Kim, Ji-Hee;Sung, Si-Youl
    • Journal of Food Hygiene and Safety
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    • v.34 no.5
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    • pp.421-430
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    • 2019
  • In this study, 195 pesticide residues in fruit samples (n=150) at local markets in Chungcheongnam-do Chungnam, Korea were monitored using a multi-residue method combined with GC-MS/MS and LCMS/MS. Among 150 fruit samples, 40 types of pesticides were detected in 63 samples and the detection rate was 42.0%. However, the amounts were below the maximum residue limit (MRL). Detection rates for pesticides in each thpe of fruit were as follows ; citrus fruits (55.2%), pome fruits (41.3%), berries (38.7%) and stone fruits (36.0%). Although the sample size was small (n=2), pesticide residues were not detected in tropical fruits. Occurrences of detection of pesticide residues in apple showed the highest level, and mainly, insecticides were detected most frequently. The most commonly detected pesticides residues were bifenthrin (21), pyraclostrobin (17), novaluron (13), boscalid (10), chlorfenapyr (9), trifloxystrobin (9), furathiocarb (9), acetamiprid (8) and chlorpyrifos (8). Five types of residual pesticides (bifenthrin, chlorfenapyr, deltamethrin, fenpropathrin and fenvalerate) were detected in quince, and out of these five, fenpropathrin exceeded the MRL based on the Positive List System (PLS). These results suggested that pesticide residues in fruit samples should be continuously monitored, although residue levels in 63 other fruit samples were evaluated as being within a safe level.

Analysis of Good Agricultural Practices (GAP) in Panax ginseng C.A. Mayer (인삼의 GAP (우수농산물인증) 관련요소 분석)

  • Yu, Yong-Man;Oh, She-Chan;Sung, Bong-Jae;Kim, Hyun-Ho;Youn, Young-Nam
    • Korean Journal of Medicinal Crop Science
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    • v.15 no.3
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    • pp.220-226
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    • 2007
  • For the analysis of hazard factors and the development of GAP (Good Agricultural Practices) Ginseng, 10 ginseng cultural farms wished certified GAP were selected at Geumsan-gun area, a representative site of ginseng cultivation in Korea. In order to verify the safety of GAP ginseng, possible contamination of pesticide and heavy metal residues, and microbial hazard were analyzed. Soil and water around ginseng cultivation field, and ginseng were investigated. Eighty-one pesticides including carbendazim were used as typical pesticide against plant pathogens and insect pests of ginseng plant and general crops. There was no excess the maximum residue limit (MRL) in residue figure of the soil. Including the residue figure of the arsenic (0.81 ml/kg) and 7 other heavy metals was also suitable to cultivate the ginseng plant. The irrigation water and dilution water for pesticide application were also safety level for GAP. Fresh ginsengs from the farms were sampled and investigated pesticide residues and contaminations of bacteria. Among 23 pesticides tested, we didn't detect any kinds of pesticide residues, but tolclofos-methyl was frequently found in the other ginseng field. On the investigation of microorganism hazards, 2 gram negative bacteria and 1 gram positive bacterium were found in the fresh ginseng. Number of total bacteria was $1.5{\times}10^3$ cfu/ml, which was less than the other agriculture products. At these results, 10 selected ginseng farms were good cultural places for GAP ginseng production and the ginseng cultured from Geumsan-gun area were a good safe far human.

The collaborative study for verification of analytical results and assurance confidences for pesticide residue (분석결과 검증 및 신뢰성 확보를 위한 실험실간 협력 실험)

  • Park, Hye-Jin;Ko, Kwang-Yong;Han, Kook-Tak;Kim, Il-Jung;Lee, Yong-Jae;Kim, Sung-Hun;Lee, Kyu-Seung
    • Korean Journal of Agricultural Science
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    • v.32 no.2
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    • pp.215-221
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    • 2005
  • The residual study of pesticide has been used in various areas, such as food safety, environmental protection, establishment of tolerance, and explaining the pathway and reaction mode of pesticides, and its importance was expected to increase further more. The aspect of food safety, the pesticide residue survey have been practiced at many organizations, but there were no verification of analytical results at present. In this experiment, we focused on instrumental stability, including response of each instrument and the recovery ratio of each organization's method. As samples for this experiment, we prepared cucumber and sesame, and chose 4 pesticides (bifenthrin, chlorpyrifos, diazinon, and ethoprophos), which were mostly detected from pesticide residue survey and widely used for each crop. The standard deviation of peak areas in the chromatogram of each pesticide were under 1.212 %, so it showed that most instruments were stable. The relationship of recovery ratio of each organization were over 0.996 for every pesticide and each organization. Finally, the analytical results for pesticide residue from each participated organization were not statically significant and we could put confidence in the result from each organization.

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A Monitoring Survey on Pesticide Residues in Pears and Sweet Persimmons (배와 단감 중 농약 잔류에 관한 조사 연구)

  • 이해근;이영득;신용화
    • Journal of Food Hygiene and Safety
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    • v.3 no.3
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    • pp.131-137
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    • 1988
  • A pesticide monitoring survey was undertaken for the both 30 samples of pears and sweet persimmons from chief producing districts in1985 to evaluate pesticide residues in these agrcultural products and also to give basic informations in establishing maximum residue limits. Pesticide residues in pears were detected with fairly low in 7-60% of total samples. Even the maximum residue levels were only in the amount of 1/53-2/3 compared with maximum residue limits established in fruits in Environment Administration, Korea. Most of the residues (71-82%) was remained in peels of pears. Incase of sweet persimmons, captan, captafol, EPN, parathion, and phenthoate residues were also detected with fairly low in 3-20% of total samples. Presently, it is considered that pesticide residues in pears and sweet persimmons may be no harmful levels for food commodities.

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Survey on the Contents of Residual Pesticide in the Agricultural Products on Kangweon-Do (강원도산 농산물 중 잔류농약 실태조사)

  • 심태흠;이태준;김기철;유미정;정의호;이해금
    • Journal of Food Hygiene and Safety
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    • v.7 no.4
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    • pp.149-156
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    • 1992
  • This study was carried out to determine residues of 17 pesticides and provide basic information on dietary safety of 35 kinds of Kangweon-do agricultural products. Residual leyels of organochlorine and organophosphorus pesticides were analyzed by using GLC-ECO and GLC-NPD, respectively. A total of 157 agricultural products of Kangweon-do were analyzed. At least one kind of pesticide residues were detected in 48.4% of the analyzed samples and two or more kinds were found in 15.3%. Residue of Captan was detected in 43 samples of 81 agricultural products which was 53.1%. But residues of Endrin, Captafol, Parathion, Fenitrothion, Fenthion and EPN were not found in the all samples tested. Ranges of the pesticide residue leyels detected were ND-0.142 ppm for organochlorine pesticides, ND-0.075 ppm for organophosphorus pesticides and ND-1.067 ppm for Captan. Results of this monitoring study demonstrated that pesticide residue leyels in Kangweon-do agricultural supply were generally well below regulatory limits.

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