• Title/Summary/Keyword: 유기염소계 농약

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Study on the Level of Organochlorine Pesticide Residues in Agricultural Products (농산물 중 유기염소계 잔류 농약에 관한 연구)

  • 엄미나;장재철;정진아;유영희;지의상
    • The Korean Journal of Food And Nutrition
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    • v.14 no.5
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    • pp.446-456
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    • 2001
  • This study was carried out for the dietry safely based on the level of pesticide residues In 13 kinds of agricultural products consumed in Kyonggi-Do. Korea. From June to October 2000, sixteen organochlorine pesticides in 397 samples were analyzed by using GC/ECD and GC/MSD. According to the results, endosulfan were detected in 27(7.8%) samples and chlorothalonil were detected in 4(1.0%) samples. Detection ranges of endosulfan were 3.7437∼ 0.0488ppm for lettuce, 2.1902 ∼0.1423ppm for spinach, 2.4909 ∼0.0786ppm for mallow and 3.2333∼0.3997ppm for mustard leaf, respectively Chlorothalonil were 5.8097 for lettuce and 0.8962ppm for spinach. Consequently, six agricutural products were detected more than the maximum residue limits in Korea Endosulfan were detected In 5(1.8%) samples and cholrothalonil were detected in 1(0.3%) sample. Detection rates of endosulfan sulfate(45.9%) of agricultural products were more than $\alpha$-endosulfan(28.5% ) and $\beta$-endosulfan (23.9% ) .

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Residue Levels of Organochlorine Pesticides on Paddy Field Soils in the Chungnam Area (충남지역(忠南地域) 논토양중 유기염소계(有機鹽素系) 농약(農藥)의 잔류수준(殘留水準))

  • Choi, Jong-Woo;Lee, Kyu-Seung;Lee, Jung-Kil;Noh, Kil-Bong
    • Korean Journal of Environmental Agriculture
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    • v.6 no.2
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    • pp.12-21
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    • 1987
  • Residues of some organo-chlorine pesticides on 108 solis collected from 5 sites of Chungnam avea during March 20-April 6, 1986 were investigated. 12 different kinds of Chemical components were detected showing the highest detection frequency with P.P'-DDE(67.6%) and the lowest with Heptachlor(1.8%). 4 different chemicals, ${\alpha}-BHC$, ${\gamma}-chlordane$, P.P'-DDD and P.P'-DDD and P.P'-DDE showed their average contents in the soils of 0.001 ppm and 0.005ppm for ${\beta}-BHC$, respectively. On the other hand, ${\alpha}-BHC$, ${\gamma}-chlordane$, P.P'-DDT. O.P'-DDT and P.P'-DDD showed 0.002ppm for their average contents of residues, respectively.

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A Study on Removal Effect of Residual Pesticide on Adsorbent (흡착제에 의한 잔류농약 제거효과에 관한 연구)

  • An, Jung-hyeok;Kim, Joon-bum;Kwon, Young-du;Jeon, Choong;Park, Kwang-ha
    • Applied Chemistry for Engineering
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    • v.18 no.6
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    • pp.537-544
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    • 2007
  • This study was carried out to investigate adsorption characteristics of residual pesticides on an adsorbent. $Bauxsol^{TM}$ and mackban-stone as adsorbent were used. Analytical method for residual pesticides was established by GC/NPD and $GC/{\mu}ECD$. Pesticides used in this study were ${\alpha}$-endosulfan, ${\beta}$-endosulfan, pendimethalin and chlorpyrifos-methyl, fenitrothion, and recovery rates were more than 97%. Adsorption rate on an adsorbent was decreased in order of endosulfan, chlorpyrifos-methyl, pendimethalin, fenitrothion. Organochlorine pesticides showed higher removal rate than the other pesticides. $Bauxsol^{TM}$ gave both chemical decomposition and physical adsorption. Mackban-stone gave only physical adsorption on the other hand. The high pH and chloric ions structure of eluted solution have greatly affected at chemical resolution. The removal rate of pesticides was increased due to the physical property of adsorbent, i.e. high porosity. The above adsorbent is to be a candidate to remove residual pesticides in water and pond of links.

Analysis of the Organochlorine Pesticides in the Water and Soil (물 및 토양 중 유기염소계 농약의 분석)

  • 김정호
    • Journal of Environmental Science International
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    • v.12 no.12
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    • pp.1315-1320
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    • 2003
  • To obtain the residual organochlorine pesticides in the coastal environment, the methods of analysis for BHC's isomer, Kelthane, Orthocide and Endrin by GC-ECD are surveyed. The relative retention time for ${\alpha}$-BHC, ${\beta}$-BHC, (equation omitted)-BHC and $\delta$-BHC is 1.00, 1.18, 1.24, 1.31 and it's of Kelthane, Orthocide, Endrin is 1.56, 1.70, and 2.02, respectively. The BHC isomers Kelthane, Orthocide and Endrin are separated on the base line. The plate height(H) for ${\alpha}$-BHC, ${\beta}$-BHC, (equction omitted)-BHC and $\delta$-BHC is 50mm, 35mm, 32mm and 29mm, and it's of Kelthane, Orthocide, Endrin is 81mm, 68mm and 48mm, respectively. The qualified defection concentration for ${\alpha}$-BHC, ${\beta}$-BHC, (equation omitted)-BHC and $\delta$-BHC is 0.26, 0.36, 0.37 and 0.39ng/g and it's of Kelthane, Orthocide, Endrin is 0.55, 1.39 and 0.56ng/g, respectively, BHC's isomer, Kelthane, Orthocide and Endrin are not detected in soil environment on South Cheju Island. Also residual organochlorine pesticides are not detected in the sea water and sediment in the ocean environment.

Development of an analytical method of organochlorine pesticides in human bloods using head space-solid phase microextraction coupled with gas chromatography/mass spectrometry (HS SPME-GC/MS를 이용한 혈액 중 유기염소계 농약의 분석법 개발)

  • Kang, Tae-Woo;Pyo, Hee-Soo;Hong, Jong-Ki
    • Analytical Science and Technology
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    • v.21 no.4
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    • pp.259-271
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    • 2008
  • The analytical method of extracting compounds from human blood to examine accumulated organochlorine pesticides (OCPs) has been widely used the traditional liquid-liquid extraction (LLE) method and solid-phase extraction (SPE) method, yet these methods have certain limitations in purification and usafe of a large amount of sample. In order to overcome the se problems reside in these, solid-phase microextraction (SPME), known as a highly efficient extration method with less samples and relatively simple, was employed to collect 18 different kinds of OCPs in blood as extraction method in this study. To optimize extraction method, we examine various experimental SPME-parameters such as adsorption (fiber type, adsorption time, adsorption temperature, salting out effect), and desorption (desorption time, desorption temperature etc.). From the experimental results, the optimal conditions are as follows: fiber was polyacrylate with $85{\mu}m$, adsorption time was for 5 min, adsorption optimum temperature was at $280^{\circ}C$, and salting out effect was NaCl with 0.1 g. MDL, precision and accuracy was in the ranges of 0.05~0.20 ng/mL, 5.59~13.39%, respedively, and accuracy was -0.5% ~24.5% for all OCPs.

Drift and Volatilization of Some Pesticides Sprayed on Chinese Cabbages (배추에 살포된 몇 가지 농약제제에 따른 성분의 휘산과 비산)

  • Lee, Ja-Young;Han, Il-Keun;Lee, Sang-Yun;Yeo, Ik-Hyun;Lee, Su-Rae
    • Korean Journal of Environmental Agriculture
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    • v.16 no.4
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    • pp.373-381
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    • 1997
  • In order to investigate the drift of pesticides sprayed on Chinese cabbage, 7 pesticides chlorpyrifos, EPN, pirimiphos-methyl, phenthoate, tetradifon, dicofol and bifenthrin were applied in two sets of field tests. The pesticide residues were quantified bar multiple-residue analysis, in which the recovery rate was 78${\sim}$92% and standard deviation was ${\pm}0.683{\sim}52%$. It was found that most of the tested pesticides were spread by drift to neighbouring area and brought about the contamination of the unsprayed crops. The extent of drift varied depending upon the pesticide, distance and wind direction. The mean residue levels on unsprayed crops were 0.66% at 3 meter distance, 0.10% at 6 m distance and 0.05% at 9 m distance from the applied area and the maximum level was 1.83% of the residue on sprayed crops.

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A Study on the Marine Algae in the Kwang Yang Bay (광양만의 해조류에 관한 연구 2. 해조류의 유기염소계 농약잔류량에 대하여)

  • 이인규
    • Journal of Plant Biology
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    • v.20 no.1
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    • pp.53-57
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    • 1977
  • The appearence of organochlorine pesticide residues in some marinealgae, e.g. Sargassum thunbergii, Ulva pertusa, Codium fragile, and Enteromorpha linza, collected from various sites of Kwang Yang Bay, southern coast of Korea, was surveyed through the year from May 1974 to March 1975. The residues were found to appear in the order to July>September>May>November≒March≒January; $\alpha$-BHC>heptachlor epoxide>dieldrin>aldrin>endrin; and in the range of 0-93 $\mu\textrm{g}$/kg dry matter.

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Occurrence of Organochlorine Insecticides in Vegetable Oils Produced in Korea (한국산 식물성(植物性) 기름 중 유기염소계(有機墮素系) 살충제(殺童劑)의 잔류량(殘留量))

  • Lee, Su-Rae;Kang, Soon-Young;Kim, Yong-Hwa
    • Korean Journal of Food Science and Technology
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    • v.12 no.3
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    • pp.216-218
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    • 1980
  • The appearance of organochlorine insecticides in 43 samples of refined vegetable oils including rapeseed, rice bran, sesame, perilla and corn oils produced in Korea in 1976 was investigated. Residue levels varied depending on the pesticide, oil source and production area. Gas-liquid chromatographic techniques were used to detect and quantify the presence of heptachlor, its epoxide, BHC, aldrin, endrin and DDT residues.

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On the Organechlorine Pesticide Residues in Downstream Area of Nakdong River (낙동강(洛東江) 하류지역(下流地域)에 있어서 유기염소계(有機鹽素系) 살충제(殺蟲劑) 농약(農藥)의 잔류평가(殘留評價))

  • You, Sun-Jae;Park, Chung-Kil
    • Applied Biological Chemistry
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    • v.27 no.3
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    • pp.187-197
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    • 1984
  • Samples (river water, tap water, soil, sediment, fish and shellfish) collected in Downstream Area of Nakdong River were analyzed for organochlorine pesticides by G.C. equipped with electron capture detector. Residue levels of organochlorine pesticides in the river water and tap water ranged from less than detection limit (ND) to 56ppt. Total BHC concentration in the river water and tap water were found to increase in summer and decrease in winter. The variation appeared to be related to rain fall. ${\alpha}-BHC\;and\;{\beta}-BHC$ concentration in the soil were ND-3.3ppb and ND-769.7ppb, respectively. ${\alpha}-BHC\;and\;{\beta}-BHC$ concentration in the sediment were ND-2.0ppb and ND-409.9ppb, respectively. Concentration factor of total BHC in the sediment ranged from 83 to 3213. In fish, Carasssus carassius and shellfish, Anodonta woodiana(Lea) the concentration factor of ${\beta}-BHC$ and total BHC were 2,609, 435 and 3,261, 375, respectively.

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