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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국환경생물학회 환경생물 환경생물 제26권 제4호
발행연도
2008.1
수록면
330 - 342 (13page)

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A comprehensive quality survey for PCDDs/PCDFs and coplanar PCBs as well as heavy metals (Cu, Zn, Cd and Pb) in sediments has been investigated in August 2006, Korea. Monitoring was undertaken at five streams representing different surrounding environments throughout Juwang and Gapyeong streams (reference sites), Jungrang stream (dense population site), Ansan stream (mixed small population and industrial site), and Siheung stream (heavy industrial site). The levels of heavy metal in samples were found to be significantly higher in sediment from Siheung stream compared to those of other stream sites. The heavy metal concentrations (dry weight basis) in sediment from Siheung stream were as follows; Cd (3.7 μg/g), Pb (1,295 μg/g), Cu (713.4 μg/g) and Zn (358.1 μg/g). Among 12 coplanar PCBs and 17 PCDDs/PCDFs selected as target compounds in this study, PCB (IUPAC no. 118) and OCDD were the most abundant congenersfound in all sediment samples, followed by 1,2,3,4,6,7,8-HpCDD, OCDF and 1,2,3,4,6,7,8-HpCDF as well as PCB (IUPAC no. 105). These results were shown to be in the same trend as the sediment samples of other countries. The levels of PCDDs/PCDFs/coplanar PCBs in sediment samples were expressed as concentrations and WHO-TEQ values. The PCDDs/PCDFs/coplanar PCBs concentrations and their WHO-TEQ values in sediment from Siheung stream were remarkably high. The levels detected were 788.16 pg/g and 36.080 pg WHO-TEQ/g dry weight for PCDDs/PCDFs and 314 pg/g and 0.4189 pg WHO-TEQ/g dry weight for coplanar PCBs, respectively, beyond the safety level of sediment value 20 pg WHO-TEQ/g. Sediment samples of the five streams were also monitored by sensitive biomarkers using insect immune responses: hemocyte-spreading behavior and immune-associated enzyme activities of phospholipase A2 (PLA2) and phenoloxidase. Organic extracts of Siheung and Jungrang sediments significantly interfered with the hemocytespreading behavior, whereas those of Ansan, Gapyeong, and Juwang did not. These organic extracts did not inhibit the PLA2 and phenoloxidase activities. However, phenoloxidase was highly susceptible to exposure to aqueous extracts in all site sediments. In comparison, PLA2 activities of the hemocytes were significantly inhibited only by aqueous extracts of Siheung, Jungrang, and Gapyeong sediments, but not by those of Ansan and Juwang. Despite some disparity between bioand chemical monitoring results, the biomarkers can be recommended as a device warning the contamination of biohazard environmental chemicals because of a fast and inexpensive detection method.
#coplanar PCBs #PCDDs #PCDFs #heavy metals #biomarker #Spodoptera exigua #stream #Korea

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참고문헌 (24)

참고문헌 신청
Alkock RE / 1999 / Improvements to the UK PCDD/F and PCB atmospheric emission inventory following an emission measurement programme / Chemosphere 38 : 759 ~ 770 google schola Armin B / 2000 / Endocrine disruptors / Environ. Sci. Pollut. Res 6 : 44 ~ 48 google schola Baines D / 1994 / Octopamine enhances phagocytosis in cockroach hemocytes: involvement of inositol triphosphate / Arch. Insect Biochem. Physiol 26 : 249 ~ 261 google schola Bradford MM / 1976 / A rapid and sensitive method for the quantification of microgram quantities of protein utilizing the principle of protein-dye binding / Anal. Biochem 72 google schola Bullet P / 1999 / Antimicrobial peptides in insects: structure and function / Dev. Comp. Immunol 23 : 329 ~ 344 google schola

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