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Monitoring and health risk assessment of heavy metals in commercial fishery products in South Korea

  • Yeon-hee Kim (김연희, 대학원 생명공학과 시스템식품생명공학전공)

초록/요약

Since the industrial development, marine environmental pollution caused by heavy metals is becoming an increasingly serious issue. This can lead to polluted fishery products, accumulate through the food chain, to finally cause serious side effects in humans. Fishery product consumption in South Korea is increasing with economic development. Thus, continuous investigation and health risk assessment are essential. This study conducted monitoring and risk assessment of 11 heavy metals in 71 commonly consumed fishery products in the South Korean population. Linearity, limit of detection, limit of quantification, accuracy, and precision were measured to verify the analysis method. The limit of detection was 0.03−1.47 μg kg-1, and limit of quantification was ranged from 0.03 to 3.64 μg kg-1, accuracy were 82.60−115.41%, and precision was below 20 %. The monitoring results showed that the samples did not exceed the domestic criteria. As a result of the risk assessment, the THQ value for each element was at a safe level, but the HI value of shellfishes and crustaceans partially exceeded 1. In the case of shellfishes group, risk was observed in the infant and toddler group under the age of 5; crustaceans exceeded 1 in the group under the age of 11 and the adult group in the age group ranging from 30 to 64 years. The element that contributed the most to the excess of HI value is Cd. Thus, preventing food incidents through periodic monitoring of fishery products in South Korea is essential. Additionally, long-term regulation policies should be established to reduce pollution in the marine environment.

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초록/요약

산업발전과 함께 중금속으로 인한 해양환경 오염은 날로 심각해지고 있으며 이는 수산식품으로의 이행으로 이어져 인간에게 심각한 질병을 일으킬 수 있다. 한국의 수산물 소비는 경제발전과 함께 증가하고 있어 지속적인 조사가 필요하다. 본 연구는 국민들이 자주 섭취하는 수산물 71종을 대상으로 중금속 11종에 대한 모니터링과 위해평가를 실시하였다. 분석법 검증을 위해 직선성, 검출한계, 정량한계, 정확도, 정밀도를 측정하였으며 검출한계는 0.03-1.47 μg kg-1, 정량한계는 0.03-3.64 μg kg-1, 정확도는 82.60-115.41%, 정밀도는 20 % 이하를 확인하였다. 조사된 시료들은 국내 설정된 기준규격을 초과하지 않았으며, 위해평가 결과 각 원소별 THQ 값은 안전한 수준이었으나, 패류와 갑각류의 HI값이 기준을 일부 초과하였다. 패류의 경우 5세 이하의 영유아 그룹에서 위험성이 관찰되었고, 갑각류는 11세 이하 그룹과 30세에서 64세 이하의 그룹에서 1을 초과한 값을 보였다. HI값의 초과에 가장 크게 기여한 원소는 카드뮴이다. 향후 국내 유통 판매 수산물에 대한 주기적인 모니터링과 해양환경 오염 저감화를 위한 장기적인 대책이 필요하다.

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목차

CONTENTS I
LIST OF TABLES III
ABSTRACT IV
I. INTRODUCTION 1
II. MATERIALS AND METHODS 5
1. Instrumentation 5
2. Reagents and solutions 7
3. Sampling location and processing 8
4. Sample preparation 10
5. Method validation 11
6. Statistical analysis 13
7. Health risk assessment 14
III. RESULTS 17
1. Validation result of analysis method 17
2. Concentration of heavy metals in fishery products 19
3. Pearson correlation analysis 28
4. Health risk assessment 32
CONCLUSION 37
REFERENCE 38
ABSTRACT IN KOREAN 43

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