• Proceedings of the PSK Conference
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• 2000.10a
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• pp.255.3-256
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• 2000

• Proceedings of the KSRS Conference
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• 2004.10a
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• pp.326-326
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• 2004

• Proceedings of the Korean Environmental Sciences Society Conference
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• 2004.05a
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• pp.296-298
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• 2004

• Bulletin of Food Technology
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• v.21 no.2
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• pp.49-54
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• 2008

농산물 중 잔류농약을 보다 쉽고 효율적으로 분석 할 수 있는 다성분 동시분석 방법에 따라서 UPLC-PDA을 이용하여 기기조건에 따른 검출한계 및 정량한계를 식품별 최저 MRL과 비교하여 유효성을 알아보고 회수율을 통하여 방법의 재현성을 조사한 결과 다음과 같다. 41종의 농약에 대한 검량선은 직선성이 우수하였으며 검출한계 $0.005{\sim}0.109mg/kg$으로 나타났으며 정량한계 는 $0.018{\sim}0.363ppm$으로 나타났다. Cycloprothrin 등의 경우처럼 검출기의 감응도가 최저 MRL 기준을 초과하는 농약에 대한 보완으로는 검출감도가보다 우수한 UV 검출기 등의 병행 활용이 필요하다. 회수율에 따른 재현성은 쌀의 경우 첨가 농도 0.4 mg/kg 일때 $62.09{\sim}99.58%$로 편차범위는 $1.03{\sim}13.92%$ 얻을 수 있었다.

• Journal of Environmental Health Sciences
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• v.41 no.2
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• pp.61-70
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• 2015

Objectives: The purpose of this research was to examine radon exposure in terms of the relationship between the living environment and indoor radon concentrations among vulnerable households. Methods: Nationwide, 1,129 subjects were selected using personal questionnaires for adequately understanding the living environment, installation of E-PERM radon gas detectors, and investigation of the structure of the housing. Results: The mean concentration of indoor radon for all subjects was $130.2Bq/m^3$ (GM=101.7), and a total of 438 subjects (38.8%) exceeded the recommended standards ($148Bq/m^3$) for public facilities by the Ministry of the Environment. By location, the highest concentrations ($164.3Bq/m^3$, GM=124.1) were seen in North Chungcheong Province. In the case of the Seoul/Gyeonggi Province metropolitan area, they showed $125.6Bq/m^3$ (GM=105.1) and $118.9Bq/m^3$ (GM=96.5), respectively. By type of housing, indoor radon concentrations in single-family housing were higher than in row/multi-family housing (p<0.01). Although indoor radon concentrations raised in accordance with year of construction (p<0.05), the difference between indoor radon concentrations in underground residences was not observed to be statistically significant (p=0.633). Conclusion: More studies are necessary in the future regarding the difference in indoor radon concentrations that may occur due to different of types of indoor construction, building materials, and the amount of building materials.

• Proceedings of the Korean Society of Food Hygiene and Safety Conference
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• 2001.10a
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• pp.163-164
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• 2001

• Korean Journal of Pharmacognosy
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• v.48 no.3
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• pp.237-242
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• 2017

In this study, to investigate of safety for Benzo(a)pyrene in medicinal herb, 8 kinds of selected commercial herbal medicines (Rehmanniae Radix, Rehmanniae Radix Preparata, Amomi Tsao-Ko Fructus, Cimicifugae Rhizoma, Cyperi Rhizoma, Magnoliae Cortex, Scutellariae Radix, Scrophulariae Radix) were analysed using the high performance liquid chromatography with fluorescence detector and assessed the health risk. The levels of benzo(a)pyrene were from non-detection to $28.1{\mu}g/kg$, and the average was $3.6{\mu}g/kg$. Based on a nationwide survey of the consumption of medicinal herb by the Korean population, we estimated the potential risk from the ingestion of benzo(a)pyrene. The estimated daily intake of benzo(a)pyrene was 1.6 ng/kg b.w./day for group only know the daily average intake of medicinal herb. The MOE (margin of exposure) of benzo(a)pyrene for estimate of health risk was $1.93{\times}10^5$. Therefore, health risk from benzo(a)pyrene through intake of herbal medicine was considered negligible.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.5
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• pp.3220-3229
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• 2015

This study analyzed the effect of team feedback environment on feedback-seeking behavior, and further explored how feedback-seeking behavior led to the feeling of thriving at work and team commitment. Also, we examined the moderating effect of self-efficacy on the relationship between team feedback environment and feedback-seeking behavior. Using survey data from 201 workers employed in various industries in Korea, we found that team feedback environment was positively related to feedback-seeking behavior, and that the relationship was moderated by self-efficacy. In addition, feedback-seeking behavior was positively associated with the feeling of thriving at work and team commitment. The result suggests the importance of feedback-seeking behavior in improving performance as well as work attitude and energy. The result also emphasizes the critical role that team feedback environment plays, and the need to find ways to nurture the environment that fosters feedback seeking and giving.

• Journal of Food Hygiene and Safety
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• v.28 no.2
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• pp.158-167
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• 2013

This study was carried out to assess the safety of cereals and their products (20 species, 205 samples) distributed in Gyeonggi province by analyzing contamination levels such as exposure frequency of Aflatoxins and Deoxynivalenol (DON). Aflatoxins were detected in 16 (8%) samples in total with a range of 0.01~27.88 ${\mu}g/kg$, including 3 of 9 bake flour (33%), 2 of 6 dried corn (33%), 3 of 12 frying flour (25%) and 2 of 11 sorghum (18%). DON was found in 56 (27%) samples including 11 of 13 adlay (85%), 6 of 8 wheat (75%), 6 of 10 processed corn for popcorn (60%), 6 of 11 sorghum (55%) and 7 of 16 barley (44%) with a range of 2.2~754.4 ${\mu}g/kg$. In particular, both Aflatoxins and DON were detected in 8 samples (2 millet, 2 wheat, 1 sorghum, 1 adlay, 1 dried corn, 1 bake flour) simultaneously. As a result of this study, we found that an adult is exposed to Aflatoxins of $0.80({\times})10^{-3}{\mu}g/kg$ b.w./day and DON of 0.18 ${\mu}g/kg$ b.w./day. The quantity of exposure to DON amounted to 18.5 percentage level compared with PMTDI 1 ${\mu}g/kg$ b.w./day suggested on JECFA, therefore we can assess that the possibility of health risks by intake cereals distributed in Gyeonggi province is low. However the concentration of Aflatoxins in one dried corn was 27.88 ${\mu}g/kg$ which was over the maximum residue limits (MRL) suggested on internal and external level, the monitoring about mycotoxin should be conducted on continuously.

• 한국약용작물학회:학술대회논문집
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• 2010.10a
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• pp.381-381
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• 2010

2010년 5월 중 서울 약령시와 서울시내 대형마트에서 유통 중인 약용버섯 및 식용버섯류 16품목 92건 대상으로 중금속(비소, 카드뮴, 납, 수은) 모니터링을 실시하였다. 식품의약품안전청에서 고시한 생약의 잔류오염물질 허용기준 및 시험방법에 따라 실험하였으며, 유통 버섯류의 중금속 함유실태를 파악하고, 버섯의 안전성 기준 제정을 위한 기초 자료를 제공하고자 본 실험을 실시하였다. 새송이버섯 등 생버섯 7종 15건에 대한 중금속 검사 결과 비소 0.01~0.26 mg/kg, 카드뮴 0~0.10 mg/kg, 납 0~0.03 mg/kg, 수은 0~0.007 mg/kg 으로 중금속 함유량이 낮았다. 상황버섯 등 11종 77건의 건조되어 식용 및 약용으로 사용되는 버섯류 중 노루궁뎅이버섯은 4건 중 2건(50.0 %)에서 카드뮴이 0.32~0.82 mg/kg으로 한약재 기준 대비 높게 검출되었으며, 상황버섯은 15건 중 5건(33 %)에서 카드뮴 0.58~0.85 mg/kg, 표고버섯은 9건 중 3건에서 카드뮴 0.42~0.74 mg/kg, 운지버섯 5건 중 1건(20.0 %)에서 1.66 mg/kg, 영지버섯 16건 중 2건(12.5%)에서 수은 0.415 mg/kg과 카드뮴 0.66 mg/kg이 분석되었다. 특히 아가리쿠스버섯은 10건 중 10건(100.0 %)에서 카드뮴(10건) 1.49~7.35 mg/kg, 수은(9건) 0.202~0.505 mg/kg으로 높은 유해중금속 함유량을 보이는 것으로 조사되었다.