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제주도 연안 해조류 및 패류 중의 중금속 오염도 평가

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Alternative Title
An Assessment of Heavy Metal Contamination in Seaweeds and Shellfishes from Coastal Area of Jeju Island, Korea
Abstract
In this study, the contamination of 8 types of heavy metals (As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn) was monitored in 5 seaweeds (Ecklonia cava, Sargassum fulvellum, Hizikia fusiforme, Gelidium amansii, and Codium fragile) and 2 shellfishes (Batillus cornutus and Omphalius rusticus) collected at 12 sites from the coast of Jeju Island. These samples were collected at 4 effluent dischharge area (EDA) of land fishing farms (LFFs) and at 4 EDA of sewage treatment plants (STPs) where are likely to contaminate the coast of Jeju Island, and at 4 sites of reference area where are far away towards sea from the land. In addition, from the concentrations of heavy metals in seaweeds and shellfishes, the assessment of food safety by Korean Food Safety Standards Codex (KFSSC) and hazards resulting from the intake of these fishery products, was carried out. The results obtained from this study were as follows.

With the characteristics of sampling sites, the seaweeds collected were different. The mean concentrations of 8 heavy metals in Ecklonia cava, Sargassum fulvellum, Hizikia fusiforme, Gelidium amansii, and Codium fragile, decreased in the following sequences, respectively: Zn>As>Cu> Cd>Ni>Cr>Pb>Hg, Zn>As>Cu>Cd>Pb>Ni>Cr>Hg, As>Zn>Cu>Cd>Ni>Cr>
Pb>Hg, Zn>Cu>As>Ni>Cd>Cr>Pb>Hg, As>Zn>Cu>Ni>Cr>Pb,Cd>Hg. The concentrations of Zn and As were more than 20 mg/kg·dw (dry weight) in all the seaweeds and in those except for Gelidium amansii, respectively, the concentration of Cu was higher than that of As in Gelidium amansii, and the concentrations of the other heavy metals were different, depending on the seaweeds collected.
The concentrations of heavy metals in seaweeds with the sampling sites were different. When they were compared among the seaweeds collected in this study and with those from coastal area of domestic and foreign countries, their distnct trends were not found.
Although the heavy metals of high concentrations were different with the sampling site, in general, they were As, Cd, and Hg in Ecklonia cava, Pb in Sargassum fulvellum, Cr and Ni in Gelidium amansii, Cr and Cu in Codium fragile, and As and Cd in Hizikia fusiforme for the reference area.
When the seaweeds collected were classified with brown algae (Ecklonia cava, Sargassum fulvellum, and Hizikia fusiforme), red algae (Gelidium amansii), and green algae (Codium fragile), the heavy metals of high concentrations were As, Cd, Hg, and Zn for brown algae, Cr, Cu, Ni, Pb, and Zn for red algae, and As for green algae.
The concentrations of heavy metals in muscle of Batillus cornutus and Omphalius rusticus decreased in the following sequences, respectively: Zn>Cu>As>Cr>Ni> Cd>Pb, Hg, Zn>Cu>As>Cd, Cr>Ni>Hg>Pb. The heavy metals of high concentrations with the characteristics of sampling sites, were As, Cr, Cu, and Hg at EDA of LFFs, As, Cd, Ni, Pb, and Zn at EDA of STPs, and Cd, Cr, Ni, and Pb at reference area, in muscle of Batillus cornutus, and Cr, Cu, Ni, and Zn at EDA of LFFs, As, Cd, and Hg at EDA of STPs, and were not found at reference area, in muscle of Omphalius rusticus.
When the concentrations of heavy metals in muscle of Batillus cornutus and Omphalius rusticus were compared with the characteristics of sampling sites, those in the former were higher than those in the latter, except for Cd and Hg, at EDA of STPs, those in the latter were generally higher than those in the former, at EDA of LFFs, and at reference area, those between the former and the latter were similar.
The concentrations of heavy metals in internal organ of Batillus cornutus and Omphalius rusticus decreased in the following sequences: Zn>Cu>As>Cd>Ni>Cr>Pb>Cr. In addition, they were higher than those in muscle of Batillus cornutus and Omphalius rusticus.
When the concentrations of heavy metals between in muscle of Batillus cornutus and Omphalius rusticus and in their internal organ, were compared, those in the latter were higher than those in the latter, and the concentration ratio of internal organ to muscle of Batillus cornutus and Omphalius rusticus, for heavy metals, decreased in the following sequences: Cd>Pb>Ni>Cr>Hg> Zn>Cu>As.
The concentrations of heavy metals (Cd, Hg, and Pb) in edible seaweeds (Sargassum fulvellum, Hizikia fusiforme, and Codium fragile) and in edible muscle of Batillus cornutus and Omphalius rusticus) were lower than those by KFSSC, indicating these fishery products were edible. In addition, the hazards of 8 heavy metals in edible seaweeds and shellfishes with the intakes of these fishery products, were found to be very low, when compared with the provisional tolerable weekly intake (PTWI), recommended by the Joint FAO/WHO Exoert Committee on Food Additives.
Author(s)
고찬옥
Issued Date
2020
Awarded Date
2020. 2
Type
Dissertation
URI
http://dcoll.jejunu.ac.kr/common/orgView/000000009441
Alternative Author(s)
Ko, Chan Og
Affiliation
제주대학교 대학원
Department
대학원 환경공학과
Advisor
감상규
Table Of Contents
Summary

Ⅰ. 서론 1

Ⅱ. 연구내용 및 방법 3
1. 연구대상지역 3
2. 조사방법 4
1) 시료채취 4
2) 실험방법 7
(1) 중금속 분석 7
(2) QA/QC 8
① 회수율 9
② 검량선 및 상관계수, 검출한계 및 정량한계, 정확도와 정밀도 9
3) 통계처리 11
4) 해조류 및 패류 중의 중금속 안전성 및 위해도 평가 11

Ⅲ. 결과 및 고찰 12
1. 해조류 중의 중금속 12
1) 해조류(감태) 중의 중금속 농도 12
2) 해조류(감태 외)의 중금속 함량 특성 21
3) 해조류간 중금속 농도 비교 30
(1) 조사지점의 해조류간 중금속 농도 비교 30
(2) 해조류의 분류에 따른 중금속 농도 비교 40
2. 패류 중 중금속 44
1) 패류(근육부) 중 중금속 농도 44
2) 조사지역의 패류 근육부간 중금속 농도 비교 54
3) 패류(내장) 중 중금속 농도 59
4) 패류의 근육 및 내장의 중금속 농도 비교 65
3. 해조류 및 패류의 안전성 평가 69
1) 식품공전에 의한 중금속 안전성 평가 69
2) 해조류 및 패류의 섭취에 따른 중금속 위해도 평가 71

Ⅳ. 결론 75

참고문헌 77
Degree
Master
Publisher
제주대학교 대학원
Citation
고찬옥. (2020). 제주도 연안 해조류 및 패류 중의 중금속 오염도 평가
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