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서울시 일부 초등학생의 다소비 식품 중 납의 노출평가에 관한 연구

Title
서울시 일부 초등학생의 다소비 식품 중 납의 노출평가에 관한 연구
Other Titles
Exposure Assessment of Lead in the Most Commonly Consumed Food for Children in Seoul, Korea
Author
조아라
Alternative Author(s)
Cho,Ah Ra
Advisor(s)
엄애선
Issue Date
2011-02
Publisher
한양대학교
Degree
Master
Abstract
고도의 경제성장 및 산업발달로 인해 환경오염이 날로 심각해지고 특히 식품을 통한 중금속 오염에 노출 될 가능성이 증가하고 있다. 납은 우리 주변의 식품, 대기, 토양 및 해양 오염 등을 통해 지속적으로 노출되며 다른 금속들에 비해 체내 축적이 쉽게 이루어지고 생물학적 반감기가 비교적 긴 것으로 알려져 있다. 이러한 위해성 때문에 국내외에서는 납에 대한 지속적인 모니터링과 역학 조사를 통해 식품 중 납의 위해수준을 평가하고 있다. 그러나 아직까지 우리나라에서는 취약계층인 어린이의 납 인체 노출평가가 거의 없는 실정이다. 이에 본 연구에서는 서울시 어린이 다소비 식품 28종을 선정하여 섭취량 자료를 위한 설문조사를 실시하고, 납 함량을 분석하였으며, 어린이들이 섭취하고 있는 대표식품 중 기타식품으로 51종을 추가적으로 선정, 총 79종 식품에 대한 납의 인체노출량을 산출하고 위해평가를 실시하였다. 납의 위해평가를 시행하기 위해 쌀, 라면, 국수, 과자, 두부, 감자, 쇠고기, 닭고기, 돼지고기, 달걀, 사골국물, 어묵, 무, 콩나물, 시금치, 토마토, 양파, 참외, 사과, 바나나, 오렌지, 딸기, 우유, 요구르트(액상), 아이스크림, 탄산음료, 주스, 배추김치 등의 총 28종을 다소비 식품으로 선정하고 서울시 송파구, 종로구, 서대문구 및 동작구의 만 7-12세 초등학생 188명을 대상으로 설문조사를 실시하였다. 분석을 위한 샘플은 서울 소재 대형마트에서 구매하였고 유도결합플라즈마 질량분석 방법(Inductively Coupled Plasma Mass Spectrometer : ICP/MS)을 이용하여 분석하였다. 기타식품 51종의 납 합량은 각종 보고서, 논문 등에 수록된 자료를 활용하였고 섭취량은 국민건강영양조사(2005)와 식품의약품안전청(2008)의 어린이 및 청소년의 2일간 평균 식품 섭취량 실태 조사 보고서를 활용하였다. 중금속의 1일 섭취 합계는 각 식품의 중금속 평균 함량(mg/kg)과 집단의 평균 섭취량(kg/day)을 곱한 뒤, 그 수치의 합을 산출하였다. 먼저 국민건강영양조사의 섭취량 및 체중을 활용한 결과 식품 중 납의 1일 섭취량 합계는 만 7-12세 남자 어린이는 0.029mg, 1일 섭취량 합계의 7배수인 주간 섭취량 합계는 0.200mg으로 나타났다. 여자 어린이는 1일 섭취량 합계 0.023mg, 주간 섭취량 합계 0.160mg으로 나타났다. 납의 주간 섭취량 합계를 JECFA의 잠정주간섭취허용량인 PTWI(0.025mg/kg bw/wk)와 비교하였다. 이에 따라 납의 위해지수는 남자 어린이의 경우 0.216(21.6%), 여자어린이의 경우 0.177(17.7%)을 보여 낮은 수준으로 나타났다. 비교 검증을 위해 식품의약품안전청의 어린이 및 청소년의 2일간 평균 식품 섭취량 실태 조사 보고서를 활용하였다. 그 결과 식품 중 납의 1일 섭취량 합계는 만 7-12세 남자 어린이는 0.013mg, 1일 섭취량 합계의 7배수인 주간 섭취량 합계는 0.091mg으로 나타났다. 여자 어린이는 1일 섭취량 합계 0.011mg, 주간 섭취량 합계 0.076mg으로 나타났다. 납의 주간 섭취량 합계를 JECFA의 잠정주간섭취허용량인 PTWI(0.025mg/kg bw/wk)와 비교하였다. 이에 따라 납의 위해지수는 남자 어린이의 경우 0.103(10.3%), 여자 어린이의 경우 0.086(8.6%)을 보여 낮은 수준으로 나타났다. 본 연구 결과 만 7-12세 서울 어린이의 납 섭취 수준은 위해지수가 1보다 낮고 국외 수준과 비교하여 안전한 것으로 사료된다. 그러나 어린이는 성인보다 기대 여명이 길고 축적되는 중금속의 특성 때문에 어린이 중금속 노출에 대한 모니터링은 지속적으로 수행되어야 한다.|So far, environmental pollutions are serious. Especially, exposure to heavy metal contamination through foods due to the high economic growth and increasing industries. Lead is exposured to us through the food, atmosphere, soil and marine pollution and compared to other metal, accumulation in human body progresses easily. Due to harms, the risk estimation of lead in food has been studied through monitoring and epidemiology survey in domestic and foreign papers but in korean, there are only few human exposure assessments about lead. In this study, 28 kinds of the most frequently consumed food by children in Seoul were chosen to implement research in order to analyzed lead content and additional estimation was processed about other 51 kinds of the food children eat the most. 28 kinds of food such, rice, ramen noodle, noodle, a snack, tofu, a potato, beef, chicken, pork, egg, soup of the bones of a cow, fish paste, radish, bean sprout, spinach, tomato, onion, apple, banana, orange, strawberry, milk, yoghurt, ice cream, fruit soda, juice, chinese cabbage were chosen for this study and research was implemented to 188 students in age from 7 to 12 years at primary school in Songpa-gu, Jongno-gu, Seodaemun-gu, and Dongjak-gu in Seoul. Inductively Coupled Plasma Mass Spectrometer(ICP/MS) was used for sampling to analyzed this study. Total daily intake of the heavy metal was obtained from sub of multiplicating heavy metal mean content of each food and group of mean intake. First, sub of daily intake of lead in food for boys from 7 to 12 were 0.012mg and weekly intake of lead in food was 0.084mg. For girls, daily intake of lead in food was 0.014mg, weekly intake was 0.100mg. Compared to results about lead in PTWI of JECFA, it appears that sub of weekly intake 0.216mg(21.6%) for boys and 0.177mg(17.7%) for girls. Referred to mean food intake for 2 days of children and teenager research paper sub of daily intake of lead in food for boys from 7 to 12 were 0.014mg and weekly intake of lead in food was 0.095mg, respectively. For girls, daily intake of lead in food was 0.012mg, weekly intake was 0.081mg, respectively. Finally calculated hazard index of lead for boys were turned out to be 0.103(10.3%), 0.086(8.6%) for girls are much lower than guidelines of PTWI of JECFA. As a result of this study, intake of children from 7 to 12 years in Seoul is lower than 1. And it is a safety level as compared with hazard index based on foreign. Thus, this result showed that it is safety but the monitoring needs to be kept because of longer expectation of life of children and a characteristic of heavy metal that is accumulated in human body.
So far, environmental pollutions are serious. Especially, exposure to heavy metal contamination through foods due to the high economic growth and increasing industries. Lead is exposured to us through the food, atmosphere, soil and marine pollution and compared to other metal, accumulation in human body progresses easily. Due to harms, the risk estimation of lead in food has been studied through monitoring and epidemiology survey in domestic and foreign papers but in korean, there are only few human exposure assessments about lead. In this study, 28 kinds of the most frequently consumed food by children in Seoul were chosen to implement research in order to analyzed lead content and additional estimation was processed about other 51 kinds of the food children eat the most. 28 kinds of food such, rice, ramen noodle, noodle, a snack, tofu, a potato, beef, chicken, pork, egg, soup of the bones of a cow, fish paste, radish, bean sprout, spinach, tomato, onion, apple, banana, orange, strawberry, milk, yoghurt, ice cream, fruit soda, juice, chinese cabbage were chosen for this study and research was implemented to 188 students in age from 7 to 12 years at primary school in Songpa-gu, Jongno-gu, Seodaemun-gu, and Dongjak-gu in Seoul. Inductively Coupled Plasma Mass Spectrometer(ICP/MS) was used for sampling to analyzed this study. Total daily intake of the heavy metal was obtained from sub of multiplicating heavy metal mean content of each food and group of mean intake. First, sub of daily intake of lead in food for boys from 7 to 12 were 0.012mg and weekly intake of lead in food was 0.084mg. For girls, daily intake of lead in food was 0.014mg, weekly intake was 0.100mg. Compared to results about lead in PTWI of JECFA, it appears that sub of weekly intake 0.216mg(21.6%) for boys and 0.177mg(17.7%) for girls. Referred to mean food intake for 2 days of children and teenager research paper sub of daily intake of lead in food for boys from 7 to 12 were 0.014mg and weekly intake of lead in food was 0.095mg, respectively. For girls, daily intake of lead in food was 0.012mg, weekly intake was 0.081mg, respectively. Finally calculated hazard index of lead for boys were turned out to be 0.103(10.3%), 0.086(8.6%) for girls are much lower than guidelines of PTWI of JECFA. As a result of this study, intake of children from 7 to 12 years in Seoul is lower than 1. And it is a safety level as compared with hazard index based on foreign. Thus, this result showed that it is safety but the monitoring needs to be kept because of longer expectation of life of children and a characteristic of heavy metal that is accumulated in human body.
URI
https://repository.hanyang.ac.kr/handle/20.500.11754/140767http://hanyang.dcollection.net/common/orgView/200000416428
Appears in Collections:
GRADUATE SCHOOL OF EDUCATION[S](교육대학원) > NUTRITIONIST TRAINING PROGRAM(영양교사 양성과정) > Theses(Master)
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