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- 영문명
- A Study on Mercury Exposure Levels among Schoolchildren and Related Factors in High Mercury Exposure Areas in Korea
- 발행기관
- 한국환경보건학회
- 저자명
- 김대선(Dae Seon Kim) 권영민(Young Min Kwon) 정희웅(Hee-Ung Chung) 남상훈(Sang Hoon Nam) 유승도(Seung Do Yu)
- 간행물 정보
- 『1. 한국환경보건학회지』제41권 제4호, 231~240쪽, 전체 10쪽
- 주제분류
- 공학 > 환경공학
- 파일형태
- 발행일자
- 2015.08.30
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국문 초록
영문 초록
Objectives: Blood mercury levels among adults living in certain areas of the Gyeongsang Provinces have been shown to be very high (Kunwee County 29.6 μg/L, Yeongcheon-city 26.7 μg/L). The purpose of this project was to determine mercury exposure levels in schoolchildren and factors related with their mercury levels in high mercury exposure areas identifyed by the 2007 Korea National Environmental Health Survey.
Methods: From June to September 2010, 1,097 students from grades 3 to 6 at 19 elementary schools participated in this study, including 294 students from 10 elementary schools in Kunwee County, 529 students from Yeongcheon City, 122 students from two elementary schools in Pohang City, North Gyeongsang Province, and 152 students from two elementary schools in Ulsan Metropolitan City. Biological samples from schoolchildren, including whole blood, urine and hair, were collected to measure total mercury at the time of a health check up.
Information about children was collected by questionnaire. Total mercury concentrations in blood were measured using the Direct Mercury Analyzer 80 with the gold-amalgam collection method.
Results: The mean mercury levels were 2.70 μg/L in 1,091 blood samples, 2.25 μg/g-creat. in 820 urine samples and 1.03 μg/g in 1,064 hair samples. Blood mercury levels in the schoolchildren was slightly higher than the result of 2.4 μg/L from a 2006 survey of elementary school children on exposure and health effects of mercury by the National Institute of Environmental Research. However, 0.3% and 4.5% of participants exceeded the reference level of blood mercury by CHBMII (15 μg/L) and the US EPA (5.8 μg/ L), respectively. The reference level of urine by CHBMII (20 μg/L) was exceeded by 0.4% of participants.
As factors, residence period in the study areas, residence type, father’s education level and income all showed significant associations with mercury level in the biological samples. The number of dental amalgam sides showed an association with urine mercury. Fish intake preference and fish intake frequency were important factors in mercury levels. In particular, intake of shark meat and recent intake of shark meat were associated with higher mercury levels. In this regard, participation in the performance of an ancestral rite showed a relation with higher mercury levels.
Conclusion: The intake of shark meat was very important factor to high mercury exposure level. It is recommended to monitor and manage students with high mercury exposures who exceeded CHBM II and EPA guidelines, and include blood mercury testing in the Children’s Health check up for this province.
목차
I. 서 론
II. 연구내용 및 방법
III. 연구결과
IV. 고 찰
V. 결 론
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