• Title, Summary, Keyword: 농약잔류

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Residual Patterns of Acaricides, Etoxazole and Flufenoxuron in Apples (살응애제 Etoxazole 및 Flufenoxuron의 사과 중 잔류양상)

  • Hwang, Jeong-In;Kim, Jang-Eok
    • The Korean Journal of Pesticide Science
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    • v.18 no.2
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    • pp.61-68
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    • 2014
  • Dissipation constants and half-lives of acaricides etoxazole and flufenoxuron in apples were calculated to establish their pre-harvest residue limits (PHRLs). The acaricides were sprayed on apples with single and triple doses based on safe use guidelines, and their residual patterns in the apple were interpreted using first order kinetics equation. The residual amounts of acaricides during the experimental period were below their maximum residue limits (MRL) for apple. The dissipation constants of acaricides in the apples were calculated at 0.0788 for etoxazole and 0.0319 for flufenoxuron corresponding to their biological half-lives; 8.8~21.7 days for etoxazole and 21.7~23.1 days for flufenoxuron. The PHRLs of acaricides in the apple showed the residual amounts of etoxazole and flufenoxuron at the harvesting date would be below their MRLs if their residual amounts were less than 0.87 and 0.88 mg/kg, respectively, at 7 days prior to harvesting the apples.

Behavior of Pesticides in Soil (토양 중 농약의 동태)

  • Lee, Kyu-Seung
    • The Korean Journal of Pesticide Science
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    • v.14 no.3
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    • pp.303-307
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    • 2010
  • The researches with pesticides in soil were divided several categories such as run off from soil surface, adsorption and desorption in soil, leaching through soil, degradation and decomposition studies, fates in soil, monitoring survey and development of analytical procedures and so on. In this paper it was reviewed that the research results published in Korean journals since 1996, in connection with the former review as 'Evaluation on the effects of pesticide residues to agroecosystem in Korea'.

Pesticide Residues Survey on Agricultural Products before Auction at Whole Market in Busan Area during 2006~2008 (2006~2008년 부산지역 농산물도매시장 경매 전 농산물의 잔류농약 조사)

  • Kwon, Sun-Mok;Park, Eun-Hee;Kang, Jeong-Mi;Jo, Hyeon-Cheol;Jin, Seong-Hyeon;Yu, Pyeong-Jong;Ryu, Byeong-Sun;Jeong, Gi-Ho
    • The Korean Journal of Pesticide Science
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    • v.14 no.2
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    • pp.86-94
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    • 2010
  • This study was conducted to monitor the current status of pesticide residues in agricultural products before auction at whole markets in Busan area from March 2006 to December 2008. Of the 7,237 samples that were analyzed by multiresidue methods, 1,164 samples (16.1%) had pesticide residues and 231 samples (3.2%) exceeded the maximum residue limits (MRLs). 181 samples of the 231 samples exceeding MRLs were applied to the tentative limits because the use of the pesticides for the agricultural products was not established against the MRLs in the Korea Food Code, and it is equivalent to 78.4%. The order of pesticides exceeding MRLs was endosulfan, procymidone, chlorothalonil, ethoprophos, chlorpyrifos, diethofencarb, kresoxim-methyl and EPN. Of 211 samples with two or more pesticides residues, the residues exceeded the MRLs in 80 samples and it is equivalent to 37.9%. This study results suggested that pesticide residues exceeding MRLs could be attributed to the use of inapplicable pesticides for agricultural products and the use of two or more pesticides.

농약의 안전사용기준

  • 한국농약공업협회
    • The Bimonthly Magazine for Agrochemicals and Plant Protection
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    • v.2 no.8
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    • pp.87-92
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    • 1981
  • 농약을 보다 안전하게 사용하여 농약으로 인한 부작용을 미연에 막는일은 앞으로 농약사용에 있어 중요한 일이며 사용과정에서 잔류량이 허용치를 넘지 않도록 지키는 것 또한 중요하다. 농약의 잔류량은 농약의 종류와 제제형태, 사용시기, 살포농도, 살포회수, 종류와 품종, 재배방법 또는 살포한 후 수확이나 식용할때까지의 기간등에 따라 달라지며 사용방법등에 따라 크게 좌우된다. 농약의 약효를 의심하기전에, 농약을 범인시하여 불신하기전에 이 기준을 제대로 지켜 합리적으로 사용하는 지혜가 필요하다.

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Monitoring and Risk Assessment of Pesticide Residues in Commercial Environment Friendly Fruits and Fruiting Vegetables (유통 친환경 과실류와 과채류 중 농약잔류 실태조사 및 안전성 평가)

  • Lee, Jae Yun;Noh, Hyun Ho;Park, So Hyun;Lee, Kwang Hun;Park, Hyo Kyoung;Hong, Su Myeong;Kim, Doo Ho;Kyung, Kee Sung
    • The Korean Journal of Pesticide Science
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    • v.16 no.4
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    • pp.308-314
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    • 2012
  • In order to monitor the residual pesticides in environment friendly agricultural commodities, fruits and fruiting vegetables. Twenty-five agricultural commodities were collected twice in May and August 2011 from nine environment friendly agricultural commodities-selling supermarkets and retail stores located in eight major cities in Korea. The number of each agricultural commodity collected, 555 samples in total, was 152 organic agricultural products, 202 pesticide-free agricultural products and 201 low-pesticide agricultural products. Pesticide residues in samples were analyzed by multiresidue method for 245 pesticides using a GC-ECD/NPD and an HPLC-DAD/FLD and the peaks suspected as pesticides were identified with a GC/MSD. As a result of pesticide residue analysis, three pesticides, bifenthrin, EPN and chlorpyrifos, were detected from four samples including apple, representing a detection rate of 0.72%. The residue levels of the four pesticide-detected samples were less than their maximum residue limits (MRLs) but one pesticide EPN detected from pear exceeded its legible criterion of one twentieth MRL. Estimated daily intakes of the pesticides detected from fruits and fruiting vegetables were less than 0.76% of their maximum permissible intake.

Studies on the development of removal technique of residual pesticides in ginseng concentration (인삼농축액의 잔류농약 제거기술 개발에 관한 연구)

  • Sin, Yeong-Min;Son, Yeong-Uk;Lee, Seon-Hwa;Jeong, Ji-Yoon;Won, Young-Jun;Lee, Chang-Hee;Kim, Woo-Seong;Chae, Kab-Ryong;Hong, Moo-Ki
    • The Korean Journal of Pesticide Science
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    • v.9 no.1
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    • pp.41-50
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    • 2005
  • For the removal of residual pesticides in ginseng extracts, we estabilished the removal process using pilot plant system, the characteristic components of ginseng maintains only. According to the agricultural chemical removal process, we monitored residual pesticides of 155 species, compraing the characteristic components of ginseng. The process of 4 types of agricultural chemical removal process compared to the control test was appeared that the residual pesticides were eliminated. As results above, the most efficient method of the possibility of raising the removal ratio of the agricultural chemical construction process was dried process of hexane after dipping and also remaining quality of the hexane appeared lowly. Besides, the removal process had an effected on the ginsenocide os ginseng, only the residual pesticides will be able to remove.

Effects of Ozonated Water Treatment on Pesticide Residues and Catechin Content in Green Tea Leaves (녹차의 잔류농약과 카테친 함량에 미치는 오존수 처리 효과)

  • Jung, Kyung-Hee;Seo, Il-Won;Nam, He-Jung;Shin, Han-Seung
    • Korean Journal of Food Science and Technology
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    • v.40 no.3
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    • pp.265-270
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    • 2008
  • This study examined the effects of treating green tea leaves with ozonated water by evaluating pesticide residue levels and catechin content. The pesticide residue levels of tea leaves treated with carbendazim, captain, diazinon, fenthim, dichlorvos, and chlorpyrifos ranged from 43.2 to 48.2 ppm. For leaves treated by soaking or watering with tap water, or with 0.25 ppm of ozone water for 30 min. Pesticide residue levels were reduced by 24.0-30.2%, 30.3-33.6%, 52.4-70.5%, and 65.5-80.2%, respectively. No major differences in catechin content were observed in the leaves according to the soaking and rinsing treatments using ozonated or tap water.

Monitoring of Pesticide Residues and Risk Assessment of Agricultural Products Consumed in South Korea (국내유통농산물 중 잔류농약 모니터링 및 안전성 평가)

  • Kim, Sung-Hun;Choe, Won-Jo;Baik, Yong-Kyoo;Kim, Woo-Seong
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.37 no.11
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    • pp.1515-1522
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    • 2008
  • Monitoring the pesticide residues in agricultural products is essential to protect consumers, obtain data for risk assessment, and ensure fair trade practices. We developed a multi-residue method for the analysis of 37 pesticides with different physico-chemical properties in agricultural products and analyzed the amount of pesticide residues on about 1,000 samples circulated in South Korea. The samples consisted of 26 different types of agricultural products selected at markets in 14 major cities; cereals (2 species), nuts (1 species) potatoes (1 species), beans (2 species), fruits (3 species), vegetables (16 species), and mushrooms (1 species). In this study, residual pesticides were detected in 23 samples (2.2%) and one sample was detected to be over maximum residue limits (MRLs, 0.1%) for pesticides in foods by the Korea food code. In leafy vegetables such as pepper leaves, radish leaves, cham-na-mul, shin-sun-cho, crown daisy, chwi-na-mul and citrus fruits such as kumquat, 8 kinds of pesticides were detected. Specially, diazinon were detected over MRLs and also, endosulfan, ethoprophos and phenthoate were detected frequently. Based on these results, we investigated the risk assesment from amount of residual pesticide, total %ADI was 1.262%, but the value has not effected on human health.

Recognition of Farmer and Urban Resident on Pesticide Toxicity (농약의 독성에 대한 농민과 도시민의 인지도 분석)

  • Cho, Taik-Soo;Moon, Young-Hee
    • The Korean Journal of Pesticide Science
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    • v.4 no.4
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    • pp.48-55
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    • 2000
  • This study examined how does farm producers and urban consumers recognize the toxicity of pesticides application to agricultural production. The survey was carried out with quesuonnaires, and found tile fellowing results. The 60% of the total respondents in urban residents acknowledged that it is necessary for farming to apply pesticides. Nevertheless, they think that pesticides application have excessively been done more than necessary, and they would cause the problem of agrochemical-residual in agricultural products. They preferred to the crops produced by organic-farming. But they do not believe that the organic crops are pure one that pesticides are not applied at all. They thought that pesticides remained in the crops and they cause a chronic toxicity and cancer, though their degree of causing cancer would not be high. The other hand, farmers among the total respondents expressed that pesticides are absolutely needed to farming. However, about half of the total farmers' respondents did not follow the recommended guide line for proper use of pesticides and applied its double amount of the recommended dose. The most of farmers thought that the applied pesticides would be persisted into the crops. The 69 % of the total respondents did not know that crops over MRL(Maximum Residue Limit) of pesticides must be discarded and tile farmer who distributed the crops over MRL of pesticides have to pay some kind of penalty.

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Analysis of Variability Factors in Establishing Pesticide Residue Limits on Food Crops (농산물중 농약잔류 허용기준 설정시의 변이계수 분석)

  • Lee, Mi-Gyung;Lee, Su-Rae
    • Korean Journal of Food Science and Technology
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    • v.37 no.3
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    • pp.492-497
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    • 2005
  • In establishing legal limits of pesticide residues, various default values are employed to compensate for unavoidable variability in data. Because permissible errors in residue analysis reach ${\pm}30-40%$ RSD, maximum residue limits (MRLs) follow geometric progression. According to 5-yr period JMPR reports, variability factor (ratio of highest to median values) in field residue trials was 3.8-fold in 486 crop-pesticide combinations and round-up effort from highest residue to MRL was 1.5-fold, whereas regulatory margin (ratio of MRL to highest residue) used in Korea was 4.8-fold in 822 crop-pesticide combinations; Korean MRLs will be set at higher levels as compared with Codex limits if these margins are employed. Validation studies to compare and harmonize Korean and Codex MRLs of pesticide residues on food crops should be undertaken.