• 제목/요약/키워드: 1-Chloropropane

검색결과 17건 처리시간 0.034초

A Study on Subchronic Inhalation Toxicity of 1-Chloropropane

  • Chung, Yong Hyun;Han, Jeong Hee;Lee, Yong-Hoon
    • Toxicological Research
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    • 제31권4호
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    • pp.393-402
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    • 2015
  • This study was conducted to measure toxicity of 1-chloropropane (CAS No. : 540-54-5). According to the OECD Test Guideline 413 (Subchronic inhalation toxicity: 90-day study), SD rats were exposed to 0, 310, 1,250, and 5,000 ppm of 1-chloropropane for 6 h/day, 5 day/week for 13 weeks via whole-body inhalation. Mortality, clinical signs, body weights, food consumption, motor activity, ophthalmoscopy, hematology, serum chemistry, urinalysis, organ weights, gross and histopathological findings were compared between control and all tested groups. No mortality or remarkable clinical signs were examined during the study. No gross lesions or adverse effects on body weight, food consumption, motor activity, ophthalmoscopy, urinalysis, hematology, organ weights were observed in any of male or female rats in all tested groups. In serum biochemistry, glucose was significantly decreased in males of 1,250 and 5,000 ppm groups compared to control group in dose-dependent relationship. In histopathological examination, vacuolation of acinar cells was observed in pancreas of all male and female groups exposed to 1-chloropropane. In conclusion, no observable adverse effect level (NOAEL) was considered to be below 310 ppm/6 h/day, 5 day/week for rats.

$CO_2$ Laser Induced Decomposition of 1-Bromo-3-Chloropropane

  • Byoung Soo Chun;Nam Woong Song;Kwang Yul Choo
    • Bulletin of the Korean Chemical Society
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    • 제11권3호
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    • pp.214-220
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    • 1990
  • We have studied the Infrared Multiphoton Dissociation (IRMPD) of 1-bromo-3-chloropropane by using the pulsed $CO_2$ laser. The product yields and the HCl/HBr branching ratios in IRMPD of $BrCH_2CH_2CH_2Cl$ are studied under the focused beam geometry as a function of buffer gas (He) pressure, laser energy, and photolysing wavelength. It is observed that the total dissociation yield has a laser energy dependence of 1.8-2.0 power order and the branching ratio is very slightly dependent on the pulse energy for the laser lines employed. The dependences of total dissociation yield and branching ratio on the buffer gas pressures show that the dissociation yield monotonically decreases and the branching ratio slightly decreases with the increase of the buffer gas pressure. The Energy-Grained Master Equation (EGME) was applied to explain the laser pulse energy and the buffer gas pressure(He) dependence of the dissociation yield and the branching ratio.

Mutation Spectrum of 1, 2-Dibromo-3-chloropropane, an Endocrine Disruptor, in the lacI Transgenic Big $\textrm{Blue}^{(R)}$ Rat2 Fibroblast Cell Line.

  • Kim, Youn-Jung;Chai, Young-Gyu;Lee, Kilchul;Kyounghee Oh;Ryu, Jae-Chun
    • 한국환경독성학회:학술대회논문집
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    • 한국환경독성학회 2001년도 춘계심포지움 및 학술발표회
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    • pp.129-129
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    • 2001
  • 1,2-Dibromo-3-chloropropane (DBCP), a soil fumigant against nematodes, is a genotoxic carcinogen and also is classified by World Wildlife Fund as endocrine disruptors. DBCP has been extensively studied on genotoxicity, carcinogenicity, and damage in male reproductive-related organs. However, information on precise mechanism of mutagenesis and carcinogenesis of DBCP is yet unknown. (omitted)

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MUTATION SPECTRUM OF 1,2-DIBROMO-3-CHLOROPROPANE, AN ENDOCRINE DISRUPTOR, IN THE lacI TRANSGENIC BIG BLUE$\circledR$ RAT2 FIBROBLAST CELL LINE

  • Kim, Youn-Jung;Chai, Young-Gyu;Ryu, Jae-Chun
    • 한국독성학회:학술대회논문집
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    • 한국독성학회 2001년도 International Symposium on Dietary and Medicinal Antimutgens and Anticarcinogens
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    • pp.181-181
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    • 2001
  • 1,2-Dibromo-3-chloropropane (DBCP), a soil fumigant against nematodes, is a genotoxic carcinogen and also is classified by World Wildlife Fund as endocrine disruptors. DBCP has been extensively studied on genotoxicity, carcinogenicity, and damage in male reproductive-related organs. However, information on precise mechanism of mutagenesis and carcinogenesis of DBCP is yet unknown. Thus the mutation spectrum and mechanism of DBCP was determined in lacI transgenic Big Blu $e^{R}$ Rat2 fibroblast cell lines.(omitted)d)

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생체적합성과 생분해성을 갖는 키틴유도체의 합성과 물성V -라이소자임에 의한 액정성 키틴 유도체의 생분해특성- (Synthesis and Physical Properties of Bioc'ompatible and Biodegradable Chitin Derivatives V. -Biodegradation of liquid Crystalline Chitin Derivatives by Lysozyme-)

  • 김선정;이영무
    • 대한의용생체공학회:의공학회지
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    • 제15권1호
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    • pp.89-96
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    • 1994
  • 키틴의 글루코사민 단위에 클로로프로판, 산화프로필렌 그리고 클로로프로판 디올을 반응시켜 프로필 키틴(PPC), 히드록시프로필 키틴(HPC), 디히드록시프로필 키틴(DHPC)등의 에테르 형태의 키틴 유도체를 합성하였고, 이들을 99% 포름산에 용해시켜 고분자 농도 30 wt%이상에서 콜레스테릭한 유방성 액정을 형성하였다. 액정이 형성된 용액으로부터 필름을 제조하여 라이소자임이 포함된 유사 체액, pH 1.2, pH 6.7 그리고 pH 8.2 용액에서 in vitro 분해정도를 관찰한 결과 처음 1주일에서 급격하게 분해되었으며 중성 영역에서 큰 무게 감소와 기계적 강도가 감소하였다. 세가지 시료들 중 DHPC가 가장 좋은 생분해 정도를 나타냈다.

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생체적합성과 생분해성을 갖는 키틴유도체의 합성과 물성 VI. -$\beta$-키틴과 그 유도체들의 라이소자임에 의한 생분해도 및 물성변화- (Synthesis and Physical Properties of Biocompatible and Biodegradable Chitin Derivatives Vl. -Biodegradation of $\beta$-Chitin and Its Derivatives by Lysozyme-)

  • 김선정;이영무
    • 대한의용생체공학회:의공학회지
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    • 제16권3호
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    • pp.257-264
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    • 1995
  • $\beta$-키틴의 글구코사민 단위에 클로로프로판, 산화프로필렌 및 클로로프로판 디올을 반응시켜 프로필키틴(PPC), 히드록시프로필 키틴(HPC) 및 디히드록시프로필 키틴(DHPC) 등의 $\beta$-키틴 유도체들을 합성하였고 이들을 99% 포름산에 용해시켜 30wt%이상의 고분자용액의 농도에서 액정을 형성시켰다. 액정이 형성된 용액으로 부터 필름을 제조하여 라이소자임이 포함된 유사체액 pH 1.2, pH 6.7, 및 pH 8.2 용액에서 in vitro 분해정도를 관찰한 결과 처음 일주일에서 $\beta$-키틴 유도체들이 $\beta$-키틴보다 급격히 분해되었으며 $\beta$-키틴 유도체들중에서는 DHPC가 가장 좋은 생분해정도를 나타냈다.

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감귤선충 (Tylenchulus semipenetrans) 에 대한 DBCP 유제처리효과 (On the Effects of Emulsifiable DBCP for Control of the Citrus-root Nematode, Tylenchulus semipenetrans in Two Citrus Orchards)

  • 이영배;한상찬;박중수
    • 한국응용곤충학회지
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    • 제14권3호
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    • pp.141-146
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    • 1975
  • 감교선출(Tylenchulus semipenetrans)에 대한 DBCP(Dibromo chloropropane) $80\%$ 유제의 처리방법 및 약량과 회수를 규명코저 시험하여 아래와 같은 결과를 얻었다. 1. 약량의 증가에 다라, 점주가 관주처리보다 좋은 효과를 보였다. 2. 온주귤원에서는 배수가 나빠서 2회처리로서 좋은 효과를 볼 수 있었다. 3. 점토함량이 낮은 하귤원에는 3.3-4.4l/10a의 1회점주처리가, 점토함량이 높은 온주귤원에는 4.4l/10a씩 2회점주처리가 좋았다.

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Solid Phase Microextraction 및 Purge & Trap을 이용한 생물시료 중 휘발성 유기화합물의 GC/MS 분석비교 (Comparison Solid Phase Microextraction with Purge & Trap on the GC/MS Analysis of Volatile Organic Compounds in Biota Samples)

  • 안윤경;서종복;홍종기
    • 분석과학
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    • 제14권5호
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    • pp.392-399
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    • 2001
  • 생물시료에 존재하는 휘발성 유기화합물 중 n-butylbenzene과 1,2-dibromo-3-chloropropane (DBCP)를 기체크로마토그래피/질량분석기-선택이온검색법에 의해 수행하였다. 시료 중 휘발성 유기화합물은 $100{\mu}m$ polydimethyl siloxane (PDMS) fiber를 사용하여 headspace solid phase microextractio (SPME) 및 purge & trap 방법에 의해 추출 및 비교하였다. SPME에 의한 회수율은 n-butylbenzene의 경우 85.8%, DBCP의 경우 92.4%로 나타났고 검출한계는 각각 $0.15{\mu}g/kg$, $0.05{\mu}g/kg$로 나타났다. 반면, purge & trap의 경우 회수율은 n-butylbenzene의 경우 115.2%, DBCP의 경우는 80.9%로 나타났고 검출한계는 각각 $0.04{\mu}g/kg$$0.70{\mu}g/kg$로 나타나 두 방법에 있어 국내에서 규제하는 검출한계측면에서 큰 차이는 없었다.

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