• Analytical Science and Technology
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• v.21 no.5
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• pp.383-391
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• 2008

International Agency for Research on Cancer (IARC) has classified it as a possible carcinogen and World Health Organization (WHO) has suggested 50 ng/mL as a guideline value for 1,4-dioxane. Considering the toxicity of 1,4-dioxane and ingestion rate of drinking water, the monitoring of 1,4-dioxane in drinking water in Nakdong river is very important. We analyzed 1,4-dioxane four times per year for the 12 samples of treated water and 4 samples of raw water in Nakdong river in Korea from 2000 to 2007 and surveyed the trend of concentrations of 1,4-dioxane. As a results of analysis, 1,4-dioxane was detected from 0.24 to 240.2 ng/mL in treated water and from 0.39 to 81.9 ng/mL in raw water from 2000 to 2007. The average concentrations are 22.68 ng/mL and 19.15 ng/mL in treated water and raw water, respectively. The detected concentrations was decreased but frequency of detection was not changed since establishment of regulation in 2004. Results of comparison of 95 percentile excessive cancer risk of 1,4-dioxane in treated and raw water were each $6.63{\times}10^{-6}$, $3.17{\times}10^{-6}$ before 2004 and $2.10{\times}10^{-6}$, $1.22{\times}10^{-6}$ after 2004. Also, comparing the detected concentration and frequency for each season, these were more detected the concentration and frequency for 1,4-dioxane in treated and raw water from winter to spring.

• Proceedings of the KSCN Conference
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• 2003.11a
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• pp.1086-1087
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• 2003

오늘날 급변하는 사회경제적 환경 때문에 현대인의 영양과 건강에 대한 관심은 날이 갈수록 높아지고 있어 대중매체에서도 영양과 건강에 대한 정보를 전달하는 경우가 많아지고 있다. 특히 방송매체 중 공중파 TV 프로그램에서의 정보들은 쉽게 접할 수 있어 올바른 영양 및 건강생활을 위한 정보나 실천지침을 국민들에게 전달되는 통로서의 긍정적인 부분도 있으나 시간상 제작환경상 등의 제약으로 인해 왜곡된 정보를 전달하는 부정적인 부분도 있다. 이에 건강관련 식품영양정보 모니터링을 통해 객관적인 평가와 문제점을 파악한 후 유형별로 분류, 분석하여 개선방안을 마련하기 위해서 본 연구에서는 방송매체중 공중파 TV프로그램 중 정확한 보도와 정보전달을 목적으로 하는 프로그램과 드라마 중 가족드라마를 선정하여 건강관련 식품영양정보의 양적 질적 현황을 파악하고자 하였다. 건강관련 식품영양 정보들에 대한 건수, 시간수, 주제, 취재원, 적절성과 부적절성 평가 및 부적절성의 요인들을 양적 질적으로 평가하여 연도별 비교분석을 하였다. 2002년도 4월 30일부터 2003년 9월 30일까지 모니터링 전문 교육을 마친 식품영양학 전공 모니터원이 조사기간 중 담당 프로그램을 모니터하여 각 프로그램에 나타난 식품영양정보의 양과 질을 조사하여 SPSS 통계팩키지를 사용하여 빈도 및 평균분석을 하였다. 총 모니터건수는 15,226건이었으며, 이중 총 건강관련정보건수는 5,623건으로 36.9%를, 식품영양관련 정보는 4,848건으로 31.8%를 차지하는 것으로 분석되었다. 총 건강관련 정보 대비 식품영양정보건수의 비율은 86.2%로 높게 나타났다. 뉴스프로그램의 총 건강관련 정보수는 17.9%에서 16.1%, 식품영양정보수의 비율은 6.6%에서 3.6%로 낮아졌으며, 건강정보프로그램의 총 건강관련 정보수는 51.5% 에서 94.6%, 식품영양정보수의 비율은 32.4%에서 57.4%로 높게 나타났다. 드라마의 식생활관련 장면 방송시간비율은 20.8%에서 17.2%로 낮게 나타났다. 뉴스프로그램에서 건강관련정보가 가장 많이 보도되는 달은 2002년 10월, 2003년 9월로 나타났다. 건강관련 정보의 주제로는 뉴스프로그램은 질환, 건강정보프로그램은 음식, 어린이교육프로그램은 식품, 노인정보프로그램은 생활습관이 가장 높게 나타났다. 정보의 취재원으로는 전문가와 일반인의 인터뷰가 73.7%로 가장 많았다. 식품영양정보의 부적절한 평가율은 뉴스는 49.3%에서 72.2%로, 건강정보프로그램은 54.0%에서 67.8%로 2002년보다 2003년도에 높게 나타났으나, 드라마는 63.2%에서 16.2%로 낮게 나타났으며, 어린이교육프로그램 40.0%, 노인정보프로그램 17.9%인 것으로 나타났다. 드라마의 식생활 장면에서 음식의 양이 부적절한 경우는 28.6%에서 15.8%로 낮아졌으나, 음주장면의 경우 10.7%에서 11.5%로 증가하였음은 앞으로 개선이 필요하다고 생각된다. 흡연 장면의 경우 드라마상의 흡연장면 방송금지 선언의 여파로 1.6%에서 0.2%로 감소하였다. 뉴스 및 정보프로그램에서는 부적절한 평가를 받은 정보들은 적정섭취량이나 실생활에 활용할 실천방안 등에 대한 제시가 없는 경우가 가장 많았으며, 전문용어에 대한 설명부족, 영양가 비교기준이 다르거나, 식품 등의 효과에 대한 내용이 과장된 경우가 많았다. 드라마의 경우 음주, 커피, 야식 등 불필요한 식사장면이 많이 나오거나 음식의 양이 사람수에 비해 많다라는 평가가 가장 높게 나타났다. 연구 결과 TV 프로그램에서 다루는 건강관련 정보기사가 차지하는 비율과 이중 식품영양정보기사가 차지하는 비율이 높아지고 있으나 건강관련정보기사의 질적인 평가에서는 부적절한 평가를 받은 비율도 함께 높아지고 있어 이의 개선이 시급히 요구된다.

• Journal of Environmental Impact Assessment
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• v.26 no.6
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• pp.538-552
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• 2017

In this study, total mercury (THg) of Black-tailed Gull (Larus crassirostris) eggs laid on Baengnyeongdo, West Sea of Korea was analyzed in order to compare the THg concentrations of eggs depending on egg-laying order. The first-laid eggs ($mean{\pm}standard$ error, $234.4{\pm}11.2ng/g\;wet$, n=18, t=8.4, p<0.01) significantly had higher THg concentrations than the second-laid eggs ($182.8{\pm}9.1ng/g\;wet$, n=18). Also, the first-laid eggs had higher values in biometrics (length $63.10{\pm}0.49mm$, t=2.4, p<0.05; width $44.51{\pm}0.19mm$, t=4.3, p<0.01; weight $65.53{\pm}0.87g$, t=4.2, p<0.01) than the second-laid eggs (length $62.37{\pm}0.40mm$, width $43.55{\pm}0.17mm$, and weight $62.48{\pm}0.72g$). These differences might be attributed to the amount of food eaten by females relating to males' courtship feeding pattern (males increase courtship feeding rate before the first eggs are laid, and decrease the rate following the laying of the first eggs). Moreover, the lower food intake of females could diminish the quantities of egg albumen that contains a protein binds to most of methylmercury during the period of egg production. Therefore, it is necessary to consistently apply one of egg selection methods (targeted selection (the first-laid egg or the second-laid egg), random selection, and etc.) in one nest for ensuring comparability of mercury concentrations among monitoring sites and monitoring years.

• Journal of the Korean Society of Food Science and Nutrition
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• v.39 no.6
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• pp.902-908
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• 2010

In 2008, we monitored residual pesticides of 15 agricultural products such as rice, corn, pea, chestnut, mandarin, lemon, onion, pineapple, lettuce, chard, sweet potato stalk, burdock, squash, sweet pepper and mushroom. Agricultural commodities were collected from markets in 22 provinces (Seoul, Busan, Incheon, Daegu, Ulsan, Daejeon, Gwangju, Wonju, Pohang, Gumi, Changwon, Gimhae, Suwon, Seongnam, Bucheon, Goyang, Yongin, Cheongju, Cheonan, Jeonju, Yeosu, and Jeju). Total 48 pesticides were analysed by multi-residue method using GC/MS/MS. We analysed 1,064 samples and 34 samples (3.20%) were detected. Sweet potatostalk, burdock, chestnuts, peas, corn, chard, squash, mushroom and onions were found to be free from pesticide residues. 6 other agricultural products did not exceed MRLs (Maximum Residue Limits) by the Korean Food Code. Chloropyrifos and fenobucarb were particularly prevalent and also they were detected over 10 times in this monitoring. Nonetheless, the exposed quantity of the 7 residual pesticides is to be considered relatively safe, compared with the acceptable daily intake (ADI) of residual pesticides.

• The Korean Journal of Pesticide Science
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• v.16 no.1
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• pp.43-53
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• 2012

In order to monitor the levels of pesticides in environment-friendly stalk and stem vegetables and leafy vegetables selling at markets in Korea. A total of 637 (395 organic agricultural products, 242 pesticide-free agricultural products) samples of 21 stalk and stem vegetables and leafy vegetables were collected twice from markets in July and August 2010 in Korea. Pesticide residues in samples were analyzed by multiresidue method for 240 pesticides using GC-ECD/NPD and HPLC-DAD/FLD. The suspected-pesticides were confirmed with a GC-MSD. As a result of analysis, six pesticides were detected from eight samples, representing a detection rate of 1.3% and amounts of pesticide residues in samples were as follows: alachlor 0.043, chlorfenapyr 0.022-0.324, diazinon 0.024, dicofol 0.009-0.138, dithiopyr 0.008, metolachlor 0.025 mg/kg. Their residue levels were below the MRLs. Estimated daily intakes (EDIs) of the pesticides detected from stalk and stem vegetables and leafy vegetables were less than 25% of their acceptable daily intakes (ADIs), representing that residue levels of the pesticides detected were evaluated as safe for consumption. However, five samples containing pesticide residues were unsuitable environment-friendly products because of pesticides detected more than their 10% MRLs in organic and pesticide-free agricultural products.

• The Korean Journal of Pesticide Science
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• v.17 no.4
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• pp.302-306
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• 2013

We report the dietary exposure to rotenone in the Korean population and children (1-18) through consumption of lettuce and cucumber. To obtain the residue data, we analyzed using the GC-NPD and HPLC-DAD method. Rotenone residues in samples were as follows; lettuce 0.16-1.15, cucumber < 0.001-0.006. The average dietary intake was determined using result from the 2009 Korea National Health and Nutrition Examination Survey Data. The risk index (RI) was calculated using rotenone residues and dietary intakes. The lettuce and cucumber showed the highest at 18.41%, 0.00, respectively. RI fell below 100 of %RfD showing no risks in these vegetables. Therefore, the risk assessment on the detected rotenone was evaluated as safe level.

• Korean Journal of Food Science and Technology
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• v.44 no.2
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• pp.235-239
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• 2012

This research was conducted to monitor ochratoxin A in wine, beer, $makgeolli$ and fermented alcoholic beverages to estimate the exposure to ochratoxin A in the assorted alcoholic beverages. The analytical method for ochratoxin A was based on immuno-affinity column clean up followed by HPLC-FLD. Ochratoxin A was detected in 30 samples of 177 wine (17%), 25 samples of 106 beer (23.6%), 11 samples of 74 $makgeolli$ (14.9%), and 7 samples of 74 fermented alcoholic beverages (9.5%). The average levels of ochratoxin A were 0.039 ng/mL in wine, 0.010 ng/mL in beer, 0.023 ng/mL in $makgeolli$, and 0.014 ng/mL in fermented alcoholic beverages. The daily dietary exposure level of ochratoxin A estimated by using the report on national health and nutrition survey were 0.039 ng/b.w.day from wine, 0.010 ng/b.w.day from beer, 0.023 ng/b.w.day from $makgeolli$, and 0.014 ng/b.w.day from fermented alcoholic beverage.

• Journal of Food Hygiene and Safety
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• v.25 no.2
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• pp.185-191
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• 2010

In this study, monitoring of food additives as an artificial sweetener on favorite foods of children, which are deal at retail store and stationery store around eliminatory school, was performed. We analyzed aspartame, potassium acesulfame, sodium saccharin, and cyclamate from candys, biscuits, chocolates and others. Total 604 items as targeted food were collected from the other country; 285 items of candys, 131 items of biscuits, 74 items of chocolates., 114 items of others. Targeted foods were classified by manufacture nation; 308 samples from domestic products, 211 from China, 26 from Indonesia, and 59 items from other nations. Artificial sweeteners were detected from 75 cases of food stuff which were 38 native product, 25 China, 9 Indonesia, and 3 others. The percentage of detected artificial sweeteners was aspartame 7.8% (47 cases), potassium acesulfame 3.0% (18 cases), sodium saccharin 1.8% (11 cases), and cyclamate 2.6% (16 cases). The detected concentration were followed [average(minimum-maximum) mg/kg]; aspartame 817 (21-4,988), potassium acesulfame 192 (24-1,136), sodium saccharin 91 (5-326), and cyclamate 926 (8-4,680). Aspartame was detected mainly on Korea foods, and cyclamate and sodium saccharin were detected from Indonesia food, artificial sweeteners were detected Chinese food, broadly. As a result, 17 cases were violated against regulatory standard of cyclamate, and sodium saccharin. Considering average body weight (36.9 kg) and daily intake of biscuits (15.6 g) for elementary student, ratio of estimated daily intake and acceptable daily intake was 0.86% for aspartame, 0.54% for potassium acesulfame, 0.77% for sodium saccharin, and 3.56% for cyclamate.

• Korean Journal of Environmental Agriculture
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• v.35 no.1
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• pp.55-61
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• 2016

BACKGROUND: This study was carried out to survey the levels of heavy metals in perennial root vegetables and to assess dietary exposure and risk to the Korean population health.METHODS AND RESULTS: Perennial root vegetables (n=214) including Panax ginseng C.A mayer, Woodcultivated ginseng, Codonopsis lanceolata, and Platycodon granditloum were collected from markets or harvested from farmhouse in Korea. Lead(Pb), cadmium(Cd) and arsenic (As) analysis were performed with microwave device and inductively coupled plasma mass spectrometer. Limit of detection for heavy metals were 0.010~0.050 μg/kg, while limit of quantitation were 0.035~0.175 μg/kg. The recovery results were in the range of 76~102%. The average contents of heavy metals in perennial root vegetables were in the range of Pb 0.013(Panax ginseng C.A Mayer)~0.070 (Wood-cultivated ginseng) mg/kg, Cd 0.009(Panax ginseng C.A Mayer)~0.034(Codonopsis lanceolata) mg/kg, and As 0.002(Panax ginseng C.A Mayer)~0.004(Plafycodon grandiflorum) mg/kg, respectively. For risk assessment, daily intakes of heave metals were estimated and risk indices were calculated in comparison with reference dose. The dietary exposures of heavy metals through usual intake were Pb 0.070 μg/day, Cd 0.041 μg/day and As 0.008 μg/day, taking 0.03%, 0.08% and 0.0003% as risk indices, respectively.CONCLUSION: The risk level for Korean population exposed to heavy metals through intake of perennial root vegetables was far low, indicating of little possibility of concern.

• Korean Journal of Environmental Agriculture
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• v.34 no.4
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• pp.336-344
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• 2015

BACKGROUND: This study was carried out to collect occurrence data on aluminum in 12 type agricultural products and assess dietary exposure risk to the Korean population health for aluminum concentration in agricultural products.METHODS AND RESULTS: Aluminum analysis samples were performed using microwave device and Inductively Coupled Plasma Optical Emission Spectrometer. The LOD(Limit of Detection) for aluminum was 0.851 μg/kg, while the LOQ(Limit of Quantitation) was 2.838 μg/kg and recovery was 97.6% for aluminum. The average levels of aluminum in mg/kg were 0.526 for rice, 0.546 for Korean cabbage, 1.316 for corn, 6.207 for soybean, 0.549 for sweet potato, 0.257 for potato, 6.963 for spinach, 1.213 for carrot, 0.524 for garlic, 0.950 for radish, 1.015 for leek, and 3.511 for Welsh onion. The dietary exposures of aluminum through usual intake were polished rice 89.31 μg/day, Korean cabbage 33.14 μg/day, corn 0.66 μg/day, soybean 3.72 μg/day, sweet potato 6.86 μg/day, potato 4.96 μg/day, spinach 45.96 μg/day, carrot 6.79 μg/day, garlic 2.36 μ g/day, radish 7.32 μg/day, leek 2.23 μg/day and Welsh onion 43.89 μg/day, taking 0.57%, 0.21%, 0.00%, 0.02%, 0.04%, 0.03%, 0.04%, 0.04%, 0.02%, 0.05%, 0.01% and 0.28% of PTWI(2 mg/kg b.w./week), respectively.CONCLUSION: The levels of overall dietary exposure to aluminum for Korean population through intake of agricultural product was far below the recommended JECFA level, indicating of least possibility of risk.