• Title/Summary/Keyword: 유기 염소계 농약

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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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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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Construction of the Detection System for Endocrine Disrupters using Yeast Two-Hybrid Systems and Their Application (효모를 이용한 내분비계장애 활성을 가지는 화학물질의 검출계의 구축과 그 응용에 관한 연구)

  • 이행석;류재천
    • Proceedings of the Korea Society of Environmental Toocicology Conference
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    • 2002.10a
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    • pp.119-121
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    • 2002
  • 인류는 1,500 만 종류에 달하는 화학물질을 합성 혹은 분리ㆍ동정 해왔다. 그리고 현재 약 10 만 종류 정도의 화학물질이 상업적으로 이용되고 있다. 이들 화학물질 중에 유기염소화합물, 공업용화합물, 농약류, 유기취소(bromine)화합물, 중금속 및 유기금속, 식물 및 합성에스트로겐 등을 포함한 수십 종의 화합물이 내분비계장애물질 (Endocrine Disruptors, EDs)로서 생각, 혹은 의심되고 있다. 그러나, 대부분의 다른 화합물에 대해서는 그것들이 내분비계장애 작용을 가지고 있는지에 대한 충분한 지견이 얻어지지 않고 있어 이들 화학물질의 내분비계장애 작용을 평가하기 위해서는 신속 또는 간편한 검출계의 확립은 매우 중요하다.

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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.

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.

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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붕어 및 횡소개구리 체내의 Organochlorine pesticides의 분석

  • 이경진;이성인;김현정;송희영;정기호
    • Proceedings of the Korean Environmental Sciences Society Conference
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    • 2003.11b
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    • pp.381-383
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    • 2003
  • 유기염소계농약류 25종을 분석한 결과 HCHs(4종, endosulfan(2종), octachlorostyrene은 모든 시료에서 검출되지 않았으며 trans-nonachlor, heptachlor는 각각 한 지점의 붕어에서 검출되었고 나머지는 검출되지 않았다. Chlordane의 경우 두 이성질체가 한 지점의 붕어에서 검출되었고, DDT는 6개 이성질체 중 p,p’-DDT와 p,p’-DDD가 한 지점의 붕어에서 검출되었으며 o,p’-DDT는 한 지점의 황소개구리에서 검출되었다. 그 외의 이성질체는 모든 시료에서 검출되지 않았다.

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