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소각로 인근에서 재배되는 농산물의 다이옥신류 모니터링 및 위해도 평가에 관한 연구
신희창 ( Hee-chang Shin ),홍경숙 ( Kyong-suk Hong ),안재민 ( Jae-min An ),윤혜정 ( Hye-jeong Yun ),김성연 ( Sung-youn Kim ),유경은 ( Kyung-eun Yu ),윤재돈 ( Jae-don Yun ),이재훤 ( Jae-hwon Lee ),김동호 ( Dong-ho Kim ) 한국환경농학회 2016 한국환경농학회 학술대회집 Vol.2016 No.-
Dioxins(PCDDs; Polychlorinated dibenzo-p-dioxins, PCDFs; Polychlorinated dibenzofurans) are accumulated in the body through the food as a representative environmental pollutants. Dioxins are flowed into the environment through the incineration of chemical products and electrical products containing PCBs. Dioxins generated from incinerators can pollute the atmosphere and soil, and it were accumulated in the body through food. Therefore, the dioxins monitoring of agricultural products produced near incinerators are required to ensure the safety of agricultural products. In this study, the analysis of dioxins was carried out on the basis of the law of the U.S Environment Protection Agency (EPA) Method 1613 and Korean Food Standards Codex Method SOP. The fifty agricultural products were collected in the field around the incinerators. As a result, the concentration range of detected dioxins was (0.0507~0.5824) pg/g. In the range of concentrations that reflect the toxic equivalent factor is (0.00002~0.01631) TEQ pg/g. The contribution of agricultural products to the dioxins intake is not equally distributed: tomato (74%), Corn (15%), Cabbage (9%), Green pepper (2%), red pepper (0.04%), Blueberries (0.0006%). The estimated daily intake of Korean Population through agricultural products was 0.00430 pg TEQ/kg body weight/day, and it was estimated at about 0.11% of tolerable daily intake(TDI) of Korea. Consequently, Dioxins exposure levels of agricultural products produced near incinerators has been found to be very safe.
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안재민 ( Jae-min An ),홍경숙 ( Kyong-suk Hong ),윤혜정 ( Hye-jeong Yun ),김성연 ( Sung-youn Kim ),유경은 ( Kyung-eun Yu ),신희창 ( Hee-chang Shin ),윤재돈 ( Jae-don Yun ),이재훤 ( Jae-hwon Lee ),김동호 ( Dong-ho Kim ) 한국환경농학회 2016 한국환경농학회 학술대회집 Vol.2016 No.-
The present study was carried out to reduction of lead(Pb), cadmium(Cd), mercury(Hg), arsenic(As), chromium(Cr) and nickel(Ni) concentrations by 5 milling degrees(0.0%, 2.4%, 4.8%, 7.2% and 9.6%, from husked rice to polished rice) in rice. Recently, various rice by milling degree is sold for health and taste. To provide safe food to consumers, it is need to know the change of their concentrations according to milling degree of rice. Pb, Cd, As, Cr and Ni analysis in milled rice 255 samples were performed using microwave device and Inductively Coupled Plasma Mass Spectrometry(ICP/MS), whereas mercury was determined by automatic mercury analyzer(DMA-80). The contents of lead, cadmium, mercury, arsenic, chromium and nickel in samples were determined. The contents of lead was 0.0010-0.0572 mg/kg, cadmium was 0.0031-0.1009 mg/kg, mercury was 0.0001-0.0421 mg/kg, arsenic was 0.028-0.244 mg/kg, chromium was 0.016-0.495 mg/kg and nickel was 0.027-0.608 mg/kg, respectively. The Limit of detection(LOD), Limit of quantification(LOQ) and correlation coefficient(R2) for heavy metals(Pb, Cd, Hg, As, Cr and Ni) were 0.38-0.66 μg/kg, 1.21-2.09 μg/kg and 0.9999-1.0000, respectively. The recovery results and coefficient of variations were in the range 91.3-103.5% and 2.82-4.50%, by tested certified reference materials(CRM) and spiked standard solutions. For risk assessment, daily intakes of heavy metals were calculated and compared with provisional tolerable weekly intake(PTWI) or provisional tolerable monthly intake(PTMI) established by the Joint FAO/WHO Expert Committee on Food Additives(JECFA). Therefore, the level of overall dietary exposure to heavy metals for Korean through from these results, conforming with increase of milling degree of rice, heavy metal concentration tended to decrease. The contents of heavy metal were decreased 57.7% in lead, 13.0% in cadmium, 50.3% in mercury, 38.2% in arsenic, 59.1% in chromium and 48.5% in nickel in according to the highest milling degree of 9.6%(polished rice). The reduction rate of heavy metals were as Cr>Pb>Hg>Ni>As>Cd.
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축산분야 온실가스 저감대책 시행 이후 사료 중의 조단백질, 구리, 인 함량 변화
이승화 ( Seung-hwa Lee ),장은희 ( Eunhee Chang ),김효영 ( Hyoyoung Kim ),이영길 ( Younggil Lee ),박자영 ( Jayoung Park ),천수연 ( Sooyeon Cheon ),홍경숙 ( Kyung-suk Hong ),한국탁 ( Kooktak Han ),홍성희 ( Sunghie Hong ) 한국환경농학회 2023 한국환경농학회 학술대회집 Vol.2023 No.0
농식품부는 “2050 농식품 탄소중립 추진전략”에 따라 축산분야 온실가스 배출저감을 위해 다양한 대책을 마련하여 추진 중이다. 그중 양축용 사료를 대상으로 2022년 7월부터 가축 분료량과 악취를 증가시키는 조단백질의 함량을 제한하였으며, 가축분뇨의 퇴비화를 어렵게 하는 아연(Zn)과 구리(Cu)의 제한기준도 낮추었다. 또한, 2022년 10월부터는 토양 및 하천의 부영양화에 영향을 주는 인(P)의 함량도 양돈 및 가금용 배합사료에 제한기준을 설정하여 관리하고 있다. 국내 양축용 사료는 대상 축종과 성장단계 별로 아미노산, 조지방, 조섬유 등의 영양성분을 등록하여 제조·판매하며, 국립농산물품질관리원(이하 ‘농관원’)은 국내 제조·유통 중인 사료의 품질과 안전성 확보를 위해 사후관리 검정 및 모니터링, 유해성분, 첨가물 및 영양·기능성분의 분석법 개발업무를 담당하고 있다. 농관원의 배합사료 검정결과(2018.1.~2023.5.)를 활용하여 사료분야 온실가스 저감대책 시행(2022년 7월, 10월) 전후로 돼지 사료에서 조단백질과 구리 함량, 닭 사료에서 인의 함량을 각각 비교하였다. 그 결과 육성돈·비육돈 사료의 조단백질 및 구리 함량이 각각 평균 15.9%(n=31)에서 15.0%(n=36), 53.6 ppm(n=13)에서 24.3 ppm(n=39)으로 감소하였고, 산란·육계용 배합사료의 인 함량은 평균 0.61%(n=79)에서 0.54%(n=80)로 줄어든 것을 확인할 수 있었다. 최근 농식품부는 가축 장내발효로 발생하는 메탄을 감축시키는데 도움을 주는 ‘메탄저감제’와 이를 사료 원료로 이용한 ‘저메탄사료’의 인정기준을 마련하여 행정예고 하였다. 앞으로도 이러한 축산분야 온실가스 저감대책의 실효성 확보를 위한 농관원의 사료검정과 분석법 개발 등의 노력이 지속적으로 필요할 것으로 판단된다.
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