• Title, Summary, Keyword: pesticide residue amount

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A Study on the Pesticide Residues Monitoring of Medicinal Herbs which has marketed in the Daejeon (대전 지역 유통 식용 한약재의 잔류농약 실태 연구)

  • Kim, Kyoung-Shin;Kim, Sung Gu;Lim, Jae Yeun;Kim, Byoung-Soo
    • Journal of Haehwa Medicine
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    • v.22 no.1
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    • pp.129-143
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    • 2013
  • This study was conducted to investigate the residue amount of pesticide on the 41 medicinal herbs in Daejeon area. This study was carried out to monitor the current status of pesticide residues in commercial medicinal herbs for sale of food use in 2012. It was performed using GC/ECD, GC/NPD, HPLC to analyze pesticides residues. Residues of 283 pesticides were analyzed by a simultaneous multiresidue method in 41 medicinal herbs being on sale in Daejeon. The medicinal herbs detected pesticides in 10 of 41 cases, showed a detection rate of 24.39%. The medicinal herbs which exceed the maximum residue limit were five cases as Cnidii Rhizoma, Osterici Radix, Artemisiae Capillaris Herba, Zizyphi Fructus and Alismatis Rhizoma. And pesticide residue of Cnidii Rhizoma and Alismatis Rhizoma exceeds the limit standard presented in only medicine use of KFDA. The residual pesticides which had the high detection rate were Chlopyrifos, Tebuconazole and Endosulfan in the detection of medicinal herbs. For further research, standards of Pesticide Residues in medicinal herbs should be added and more research of pesticide residues in medicinal herbs required. And standards of pesticide residues in medicinal herbs should be applied equally as medicines and food.

Dissipation pattern of pesticide residues in/on different varieties of lettuce applied with foliar spraying under greenhouse condition (시설재배에서의 상추품종별 살포농약의 소실양상)

  • Lee, Hee-Dong;Ihm, Yang-Bin;Kwon, Hye-Young;Kim, Jin-Bae;Kyung, Kee-Sung;Kim, Chan-Sub;Oh, Byung-Youl;Im, Geon-Jae;Kim, Jang-Eok
    • The Korean Journal of Pesticide Science
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    • v.9 no.4
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    • pp.354-358
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    • 2005
  • The study was carried out to investigate dissipation pattern of pesticide residue in/on different varieties of lettuce applied with foliar spraying under greenhouse. The initial deposited amount of alpha-cypermethrin and imidacloprid in/on the crop was entirely corresponded with shape of the crop. Dissipation of deposited pesticide residue was supposed to be related with degradation by sunlight and wash off by watering rather than dilution effect by biomass increase. The crop grouping in leaf vegetables has to be carefully considered even in lettuce for dissipation pattern of pesticide residue; head type and leafy type.

Estimating Concentrations of Pesticide Residue in Soil from Pepper Plot Using the GLEAMS Model

  • Jin, So-Hyun;Yoon, Kwang-Sik;Shim, Jae-Han;Choi, Woo-Jung;Choi, Dong-Ho;Kim, Bo-Mi;Lim, Sang-Sun;Jung, Jae-Woon;Lee, Kyoung-Sook;Hong, Su-Myeong
    • Korean Journal of Environmental Agriculture
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    • v.30 no.4
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    • pp.357-366
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    • 2011
  • BACKGROUND: Mathematical model such as GLEAMS have been developed and successfully applied to upland fields to estimate the level of pesticide residues in soil. But, the GLEAMS model rarely applied to the Korean conditions. METHODS AND RESULTS: To evaluate pesticide transport in soil residue using the GLEAMS model from pepper plot, Alachlor, Endosulfan, Cypermethrin and Fenvalerate were applied for standard and double rate. Soil sampling was conducted and decaying patterns of pesticides were investigated. Observed climate data such as temperature and irrigation amount were used for hydrology simulation. The observed pesticide residue data of 2008 were used for parameter calibration, and validation of GLEAMS model was conducted with observed data of 2009. After calibration, the $K_{oc}$ (Organic carbon distribution coefficient) and WSHFRC (Washoff fraction) parameters were identified as key parameters. The simulated concentrations of the pesticides except Fenvalerate were sensitive to $K_{oc}$ parameter. Overall, soil residue concentrations of Alachlor, Cypermethrin and Fenvalerate were fairly simulated compared to those of Endosulfan. The applicability of the GLEAMS model was also confirmed by statistical analysis. CONCLUSION(s): GLEAMS model was eligible for evaluation of pesticide soil residue for Alachlor, Cypermethrin and Fenvalerate.

Effect of Water-and Oil-Repellent Finish on Barrier Properties of Nonwoven Fabrics (발수발유가공처리가 부직포의 차단성능에 미치는 영향)

  • Cho, Gilsoo;Choi, Jongmyoung
    • Journal of the Korean Society of Clothing and Textiles
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    • v.17 no.4
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    • pp.577-586
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    • 1993
  • Pesticide protective clothing has not been frequently worn due to its lack of thermal comfort. It is important to develop fabrics which can allow the wearer to work in comfort. One of the possible way to achieve the goal is to produce fabrics with a water- and oil-repellent finish which would resist pesticide penetration but maintain some breathability. The purpose of this study were to evaluate the pesticide barrier properties of untreated and water- and oil-repellent finished nonwoven fabrics. Three types of nonwoven fabrics(Tyvek, Sontara and Kimlon) were used as test specimens. By pad-dry-cure method, each of the specimen was treated with fluorocarbon. The pesticide barrier properties (amount of pesticide penetration and residue) were measured by the gas chromatography. The performance properties of untreated and treated specimens were evaluated with respects to water pepellency(KS K 0590), oil repellency(AATCC 118), water resistance(KS K 0591, AATCC 42), water vapor transmission (KS A 1013) and air permeability(KS K 0570). The results of this study were as follows : 1) The untreated Sontara showed much more amount of pesticide penetration than untreated Tyvek and Kimlon, while the treated Sontara showed little amount of pesticide penetration. 2) After laundering, the amount of pesticide residue in the untreated and treated Sontara was less than that in Tyvek and in Kimlon. 3) Water- and oil-repellent finish improved water repellency, oil repellency, and water resistance of specimens. 4) The untreated Sontara and Kimlon showed higher water vapor transmission and air permeability than untreated Tyvek. Water vapor transmission and air permeability of treated specimen decreased compared to those of untreated.

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Estimate of pesticide residues in tomato varieties using ratio of surface area to weight (비표면적을 이용한 토마토의 과종별 농약 잔류량 예측)

  • Kwon, Hye-Young;Kim, Jin-Bae;Lee, Hee-Dong;Ihm, Yang-Bin;Kyung, Kee-Sung;Park, In-Hee;Choi, Jung
    • The Korean Journal of Pesticide Science
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    • v.8 no.1
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    • pp.30-37
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    • 2004
  • This study estimated the correlation between surface area/weight ratios and pesticide residues in two varieties of tomato, mini tomato and tomato. The ratios of surface area/weight of mini tomato and tomato were $2.15cm^2g^{-1}$ and $1.00cm^2g^{-1}$ respectively. Pesticide residues were measured with four kinds of pesticide, chlorothalonil WP, chlorothalonil SC, oxadixyl WP, thiophanate-methyl WP. Ie residue amount of mini tomato was $1.4\sim2.4$ times higher than those in tomato regardless of the application date and frequency. The ratios of surface area/weight on tomato varieties played a key role for determining pesticide residue.

Studies on Pesticide Residues in Ostrici Radix (한국산 강활(羌活)의 잔류농약에 대한 연구)

  • Na, Seung-Young;Kim, Hong-Jun;Choi, Go-Ya;Jeong, Seung-Il;Ju, Young-Sung;Oh, Seo-Jin
    • The Korea Journal of Herbology
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    • v.21 no.4
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    • pp.37-41
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    • 2006
  • Objectives : This study has been conducted to investigate the amount of residual pesticide in herbal medicine of Osterici Radix which are purchased on Kwangju(Hanyaksarang). Methods : In order to analyze many pesticides in Osterici Radix, simultaneous multi-residue analysis of pesticides by GC-ECD/NFD was used. Results : But the amount of residual pesticide in Osterici Radix, simultaneous multi-residue analysis of pesticides by GC-ECD/NFD was used. Conclusion : These results indicate that Osterici Radix in current has safety. In future, it is considered the results of this study will be furnished the basis to succeeding studies and it is needed to extensive comparative study for the same genus-degree of relatedness.

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Study of Pyrolysis Pattern and Transfer Rate of Organochlorine Pesticide in Tobacco

  • Min, Hye-Jeong;Jang, Seok-Su;Kim, Ick-Joong;Kim, Yong-Ha;Min, Young-Keun
    • Journal of the Korean Society of Tobacco Science
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    • v.29 no.2
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    • pp.118-124
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    • 2007
  • GRLs(Guidance Residue Levels) of agricultural chemicals for tobacco are recommended by the CORESTA Agro-Chemical Advisory Committee guide. In the GRLs list, organochlorine group is one of pesticides commonly used on tobacco cultivation. In this model study, the quantitative correlation in the transfer rate of pesticide residue into tobacco smoke by spiking of organochlorine pesticides to cigarette and pyrolysates were investigated. The spiking concentration referred to the range of GRLs list and the organochlorine pesticides in mainstream smoke were analyzed by GC-MS. For the understanding of the composition variation versus temperature, the behavior of pesticides was investigated by pyrolysis-gas chromatography-mass spectrometry(Py-GC-MS). In this study, the transfer rate of pesticide residue into tobacco smoke at four different spiking concentration and the composition of pyrolysates were analyzed differently. At $10\;{\mu}g/cig$ spiking concentrations, the organochlorine pesticides were transferred into tobacco smoke in $0.02\;{\sim}\;10.19\;%$ each of component and the most of pesticides were pyrolyzed during smoking. It was found that the decomposition compounds from organochlorine pesticides were mainly composed of oxygenated and nitrogenous compounds. This study could estimate that the transfer rate of pesticides into tobacco smoke is very small amount.

Residual characteristics of pesticide in banana from international pesticide residue monitoring data (각국의 잔류농약 모니터링 자료를 활용한 바나나 중 농약 잔류 실태 조사)

  • Kim, Seo-Hong;Kim, Jeong-Ah;Im, Moo-Hyeog
    • Journal of Applied Biological Chemistry
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    • v.63 no.1
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    • pp.9-22
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    • 2020
  • This study was designed to use the safety management data for residual pesticides in imported banana based on the investigation of pesticide residue detection of agricultural products with different origins in the Republic of Korea. From the USA, EU, UK, Japan and Korea from 2007 to 2018, the results of banana residue pesticides were summarized into detected pesticides, number of inspections, number of pesticide detection cases, and the amount of detected pesticide residue. A total of 109 pesticides were detected for the pesticide residue and pesticide detection rate was 4.58% in 206,894 cases. The detection rate was ranged within 10.62-24.62% for chlorpyrifos, imazalil, methyl-bromide, azoxystrobin, carbendazim, pretilachlor and thiabendazole. Among them, chlorpyrifos was detected most often followed by imazalil, azoxystrobin, thiabendazole, bifenthrin and carbendazim. According to the results of monitoring data for bananas in EU, Japan, USA, UK and Korea, the kinds of detected pesticides were 85, 57, 23, 18 and 8, respectively. Azoxystrobin, bifenthrin and chloropyrifos were found in monitoring data of all countries. Fourteen and twelve pesticides were detected in bananas from Costa Rica and Ecuador, respectively. Imazalil and thiabendazole were detected in 16 and 11 origins, respectively. Myclobutanil and iprodione were detected in four and two countries, respectively. In bananas from Costa Rica, azoxystrobin and bifenthrin were detected 11.8 and 9.8%, respectively, and the detection rate of azoxystrobin was 19% in bananas from Colombia. Chlorpyrifos was detected 22.7, 13.3 and 10.8% in bananas from Belize, Colombia and Costa Rica respectively. Myclobutanil was detected in bananas from Colombia and Costa Rica with the rate of 17.9 and 10.4%, respectively.

Pesticide Residue Survey and Risk Assessment of Fruits in Daejeon (대전시 유통 과실류의 농약 잔류 실태 및 위해성 평가)

  • Han, Kook-Tak;Park, Hye-Jin;Lee, Kyu-Seung;Kim, Il-Jung;Kim, Kyu-Sub;Cho, Sung-Min
    • Korean Journal of Environmental Agriculture
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    • v.21 no.4
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    • pp.279-285
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    • 2002
  • Pesticide residues in some fruits collected at Noeun wholesale market, Daejeon were surveyed and assessed its risk. In 120 samples, the detection rate of pesticide was 70.8% and the rate exceed MRL was 1.67%. Highly detection rate of commodities was apple, peach and grape. Organophosphorus, organochlorine and pyrethroid insecticide were found with similar rate relatively, but most of fungicides were procymidone(dicarboximides) and chlorothalonil(organochlorine). The order of detected pesticide were chlorothalonil, chlorpyrifos, fenvalerate, procymidone, deltamethrin and EPN. In order to assess risk estimated intake amount of each pesticide was compared to ADI. Although some peach were exceed MRL the total amount and uptake pesticides was less than 1.22% comparing to ADI.

Status of Usage and Residue of Pesticide at Golf Courses in Kangwon-do (골프장의 농약 사용실태 및 잔류량 조사)

  • 우승순;방명렬;윤경애;박정희;김영진;박상균
    • Journal of Korea Soil Environment Society
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    • v.2 no.1
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    • pp.13-20
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    • 1997
  • Usage and residue of pesticide were sureyed for five years from three golf courses which have morethan eighteenholes inKangwon-do from 1992 to 1996. A total of 186 samples(soils, lawns, effluents) were collected from these courses and residual levels of four kinds of organochlorines and twelve kinds of organophosphorus pesticides in each samples were determined by GC-ECD and GC-NPD. The amount of pesticide used in each golf course was 1, 635.6kg a year on the average, and that of pesticide to the green and the fairway were 33g/$\textrm{m}^2$ and 3g/$\textrm{m}^2$, respectively. The pesticide which was not permitted for the management of golf course was detected in 24 of 186 samples and its detection rate was 12.9%. The average pesticide residue in soils was 0.208 ppm for captan, 0.031 ppm for daconil, respectively. Detection rate of the prohibited pesticides has decreased every year since 1992, and there were no residues all the tested samples in 1996.Based on these results, it might be judged investigation methods of pesticide residue should be changed with current using pesticide from the prohibited pesticides and the criteria of residual pesticides in effluents of golf course also should be established.

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