• Title/Summary/Keyword: organochlorine pesticide residues

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Analysis of Organochlorine Pesticide, in the Presence of Polychlorinated Biphenyls(PCBs) I. Florisil Column Separation of the Pesticides-PCBs Mixture (Polychlorinated Biphenyls(PCBs) 존재하에 유기염소계 살충제의 잔류분 분석 1. Florisil Column에 의한 농약과 PCBs의 분리)

  • Park C. K.;Lee C. Y.;Park R. D.
    • Korean journal of applied entomology
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    • v.16 no.4 s.33
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    • pp.221-227
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    • 1977
  • Polychlorinated Biphenyls (PCBs) interfere with gas chromatographic analysis of multiple organochlorine pesticide residues. In the present work, existing Florisil column chromatographic method has been modified as to improve separation of organochlorine pesticides and their metabolites from PCBs. It was amply demonstrated that separation of $\alpha-BHC,\; \gamma-BHC$ Heptachlor epoxide Dieldrin, p.p-DDD, p.p'-DDT from PCBs such as Aroclor 1254 is complete and recovery of the pesticides is found quantitative. Aldrin and Heptachlor in the Aroclor eluant can be separately analyzed by comparison of the chromatographic pattern of standard Aroclor 1254 with that of Aroclor 1254 a dmixed with the two pesticides. The Florsil column technique can be utilized in the routine evaluation of the organochlorine pesticide residues by gas chromatography.

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Evaluation of Organochlorine Pesticide Residues in Soil by Steam Distillation (수증기(水蒸氣) 증류법(蒸溜法)에 의(依)한 토양중(土壤中) 유기염소계(有機鹽素系) 살충제의 잔류분(殘留分) 평가(評價))

  • Suh, Yong-Tack;Shim, Jae-Han;Park, Ro-Dong
    • Korean Journal of Environmental Agriculture
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    • v.3 no.2
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    • pp.23-29
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    • 1984
  • Agricultural soil samples collected from 121 sites (plastic film house 59, up-land 30 and orchard 32 sites) were evaluated by steam distillation and GLC-ECD analysis for organochlorine pesticides (${\gamma}-BHC$, heptachlor, p,p'-DDE, dieldrin, p,p'-DDD, and p,p'-DDT) in Jeollanam-Do area. Total residues of organochlorine pesticide in orchard, plastic film house and up-land were 0.415, 0.234 and 0.156ppm, respectively. Ninety-four percent of total residue was p,p'-DDT and its homologues (p,p'-DDE and p,p'-DDD). ${\gamma}-BHC$ was detected in all soil samples at $trace{\sim}0.050ppm$ range. Residue levels of organochlorine pesticide increased in the order of p,p'-DDE, ${\gamma}-BHC$, heptachlor, dieldrin, p,p'-DDT and p,p'-DDD.

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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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Overall Assessment of Organochlorine Insecticide Residues in Korean Foods (한국식품(韓國食品)중 유기염소계(有機鹽素系) 잔류농약(殘溜農藥)에 관한 종합평가(綜合評價))

  • Lee, Su-Rae
    • Korean Journal of Food Science and Technology
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    • v.14 no.1
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    • pp.82-93
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    • 1982
  • The use pattern and survey data on the residue levels of organochlorine insecticides in Korea were summarized. On the basis of available data on food consumption and residue levels, the daily intake of the pesticide chemicals by average Korean adults were calculated to give $13.77\;{\mu}g$ of total BHC, $2.45\;{\mu}g$ of total DDT and $4.06\;{\mu}g$ of heptachlor and its epoxide. These intake levels were compared with the acceptable daily intake proposed by FAO/WHO and values obtained in other countries. It was then proposed to undertake a total diet study on pesticide chemicals for the sake of food safety assurrance and reasonable regulation of pesticides for food production in this country.

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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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Monitoring Program of Organochlorine Pesticide Residues in Agricultural Products Provided for the Army (군납 농산물 중 유기염소계 농약의 잔류량)

  • 박종고;윤재홍
    • Food Science and Preservation
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    • v.9 no.1
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    • pp.46-50
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    • 2002
  • This study was carried out for dietary safety based on the level of pesticide residues in 17 kinds of the agricultural products (apple, cabbage, cabbage kor, carrot, cucumber, pepper, onion, potato, radish, spring onion, pumpkin, lettuce, garlic, drapwort, spinach, leek crown daisy) consumed in Kyunggi-do and Inchon-city that provided for the army. From January 1998 to December 2001, ten organochlorine pesticides in 1075 samples were analyzed by using GC-ECD. According to the results, one kind of pesticides was detected in 135(12.5%) samples, and two kinds were in 7 (5.18%). While dicofol and tetradifon was not fecund. Detection rate of pesticides were 9.02% for $\alpha$, $\beta$-endosulfan, 2.8% far chlorothalonil, 0.46% for γ-BHC, 0.40% for chlorobenzilate, 0.33% for folpet, 0.28% far DDT, 0.15% for captafol, and 0.11% for captan. Dectection ranges of pesticides were from 0.001 to 0.092 ppm for $\alpha$, $\beta$-endosulfan, from 0.003 to 0.023 ppm for chlorothalonil, from 0.003 to 0.006 ppm far γ -BHC, from 0.001 to 0.003 ppm for DDT, from 0.009 to 0.095 ppm for folpet, 0.05 ppm for captan, 0.01 ppm for captafol, and 0.008 ppm far chlorobenzilatel respectively. Consequentlyl all detected pesticide levels in samples were below maximum residue limits(MRLs) in Korea and Codex.

Comparison of Steam Distillation with Solvent Extraction Method in Determining Organochlorine Pesticide Residues in Soil (토양중(土壤中) 유기염소계(有機鹽素系) 살충제의 용매추출법(溶媒抽出法)과 수증기증류법(水蒸氣蒸溜法)의 비교(比較))

  • Shim, Jae-Han;Suh, Young-Tack;Park, Ro-Dong
    • Korean Journal of Environmental Agriculture
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    • v.2 no.2
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    • pp.73-77
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    • 1983
  • Principle of steam distillation has been successfully applied to the routine extraction of organochlorine pesticide residues from soil samples. Recovery of 8 organochlorine insecticides was found consistent and also comparable to that of conventional solvent extraction method. Recoveries of ${\alpha}-BHC$ and heptachlor was, however, rather poor at 47 and 45% respectively. The steam distillation method offers added advantages such as economy in time and costly solvents.

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Organochlorine Pesticide Residues in Agricultural Soils-1981 (농경지토양(農耕地土壤)의 유기염소계(有機鹽素系) 농약(農藥)의 잔류평가(殘留評價))

  • Park, Chang-Kyu;Ma, Yeon-Sik
    • Korean Journal of Environmental Agriculture
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    • v.1 no.1
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    • pp.1-13
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    • 1982
  • Composite soil samples from 236 sites representing paddy field, up-land, orchard and plastic film house were examined for organochlorine residues by GLC-ECD. Detection frequencies and residual levels of most persistent organochlorine residues in the soil samples were found to depend on the cropping practices. Highest organochlorine residues were found in orchard soils and followed, in decreasing order, plastic film house, up-land and paddy field soils. ${\alpha}-Endosulfan$, dieldrin, p,p'-DDD and p,p'-DDT were responsible for the observed high organochlorine residues in the orchard soils. ${\alpha}-BHC$ and ${\gamma}-BHC$ were detected in all 236 soil samples. The mean residue levels of both BHC isomers were, however, remained fairly low. Residues of PCNB and ${\alpha}-endosulfan$ in native soils are reported, for the first time, in present work. PCNB was present in up-land plastic film house soils while ${\alpha}-endosulfan$ was found in all agricultural soils studied. High levels of p,p'-DDT and dieldrin were discussed in relation to crops cultivated, amount and duration of the pesticides usage. Need for continued observations on the persistent residue of pesticides in soils, already banned for general use, is emphasized.

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Extraction Efficiencies of Organochlorine Pesticides Spiked in Fish Tissues by Supercritical Carbon Dioxide (초임계이산화탄소에 의한 어류조직 중 유기염소계 농약의 추출수율)

  • Lim, Sang-Bin;Jwa, Mi-Kyung;Kang, Soon-Bae
    • Korean Journal of Food Science and Technology
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    • v.28 no.3
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    • pp.475-481
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    • 1996
  • A simple, fast, inexpensive method hal been developed to extract organochlorine pesticide spiked in fish tissues by supercritical carbon dioxide. Following static supercritical fluid extraction (SFE), pesticides are collected by rapidly depressurizing the carbon dioxide effluent through a 0.79 mm i.d. metering valve into a capped screw-top tube. Percent recovers of standard organochlorine pesticides mixture (SOPM) increased with the decrease of the extraction temperature at 103 bar. Maximum average percent recovery of SOPM was 98% at $40^{\circ}C/172\;bar$ Average recoveries of SOPM spiked in Pacific cod, flatfish and common squid were 85,74,and 83% respectively at $40^{\circ}C/172\;bar$ Application of supercritical carbon dioxide ectraction offers and attractive alternative to the use of organic solvents for extraction of organochlorine pesticides from fish tissues.

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A Survey on the Residues of Organochlorine Pesticides in Water, Mud and Clam Samples from the Kwangyang Bay, Korea (광양만(光陽灣)의 수질(水質), 저질토(底質土) 및 백합(白蛤) 중 유기염소계(有機塩素系) 잔류농약(殘溜農藥)에 관한 조사연구(調査硏究))

  • Lee, S.R.;Kang, S.Y.;Park, C.K.;Lee, J.H.;Rho, C.S.
    • Applied Biological Chemistry
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    • v.19 no.2
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    • pp.112-119
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    • 1976
  • The appearance of organochlorine pesticide residues in water, mud and clam (Meretrix lusoria) samples from the lower basin of Seomjin River around the Kwangyang Bay was surveyed to obtain the following results. 1) The concentrations of pesticide residues in the water samples were found to be in the order of dieldrin> aldrin>${\alpha}-BHC$> ${\gamma}-BHC$> endrin> heptachlor> heptachlor epoxide and in the range of $0-48ng/{\ell}$. 2) The concentrations of pesticide residues in the mud samples were found to be in the order of aldrin> dieldrin>${\alpha}-BHC$> ${\gamma}-BHC$> heptachlor> heptachlor epoxide> endrin, ranging $0-10\;{\mu}g/kg$ (dry matter), and to be more in lower layer than in upper layer. 3) The concentrations of pesticide residues in the clam samples were found to be in the of order heptachlor> ${\gamma}-BHC$> ${\alpha}-BHC$> aldrin> heptachlor epoxide> dieldrin> endrin and in the range of $0.1-18\;{\mu}g/kg$ (edible fresh muscle). The level reached the highest in 3-year old clams and sharply deceased thereafter.

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