• Title/Summary/Keyword: Gyeonggi-Do

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Preliminary Research on Securing the Stability of Sandy Beaches in Gyeonggi Province (경기도 해수욕장 모래의 안전성 확보를 위한 선행연구)

  • Choi, Yun-Ho;Byun, Joo-Hyeong;Won, Jong-Moo;Kim, Jong-Sung;Shin, Jong-Hyun;You, Chang-Suk;Jeong, Yun-Ha;Park, Min-Been;Oh, Jo-Gyo
    • Journal of Environmental Health Sciences
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    • v.46 no.6
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    • pp.694-701
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    • 2020

  • Objectives: The main purpose of this study is to evaluate heavy metal concentrations (Cd, As, Hg, Pb, Cr6+), particle size distribution, hydrochloric acid solubility, and parasite eggs in sand in five non-designated sandy beaches in Gyeonggi Province. Methods: The sampling sites are five non-designated Gyeonggi-do sandy beaches located in Ansan and Hwaseong. ICP-OES and UV, a Vibratory Sieve Shaker, and PCM were respectively used to analyze heavy metal concentrations, particle size distribution, and parasite eggs in the sand. Results: Heavy metals were detected within the beach's safety management standards and some of the detected As and Pb before and after beach opening were lower than one-quarter of the average value. In addition, the results of the T-test to confirm the As and Pb concentration changes before and after opening showed a significant difference in some beaches. The composition of sand was 86.53% according to the particle size distribution standard (2.0-0.02 mm), and the hydrochloric acid solubility was the highest at Gubongsolsup (4.9%) and the lowest at Bangameo-li (0.2%). Parasite eggs were undetected in all beach sand before and after opening. Conclusions: The safety of heavy metal concentrations in sandy beaches was secured in the selected five beaches in Gyeonggi Province. However, continuous efforts are required to make Gyeonggi-do's beaches suitable according to the Act on the Use and Management of Beaches.

  • https://doi.org/10.5668/JEHS.2020.46.6.694 인용 PDF KSCI

Climate Change and Rice Yield in Hwaseong-si Gyeonggi-do over the Past 20 Years (2001~2020) (경기도 화성시 20년간(2001~2020) 기후변화와 벼 수량 변화)

  • Ju, Ok-Jung;Choi, Byoung-Rourl;Jang, Eun Kyu;Soh, Hoseup;Lee, Sang-Woo;Lee, Young-Soon
    • Korean Journal of Environmental Agriculture
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    • v.41 no.1
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    • pp.16-23
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    • 2022

  • BACKGROUND: Rice production by the current standard cultivation method is predicted to decrease due to global warming. It seems that there has been a strong warming trend in Hwaseong-si, Gyeonggi-do. This study attempted to understand the climate change in Hwaseongsi, Gyeonggi-do and to analyze the effect of climate change on rice production. METHODS AND RESULTS: The statistical and physicochemical analyses were performed using the rice cultivar 'Chucheongbyeo' yields grown at the rice paddy field plot in the Gyeonggi-do Agricultural Research and Extension Services and the weather data measured in near the rice paddy plot. CONCLUSION(S): There was no significant difference between the average rice yields per area in 2000s (2001~2010) and 2010s (2011~2020), but the rice yield variability was greater in 2010s than in 2000s. The mean, minimum, maximum temperature, and the sunshine hours were evaluated for the correlation with the rice yield. The understanding of climate change in Hwaseong-si, Gyeonggi-do and the major weather factors affecting changes in rice yield, presented in this study, would enhance scientific understanding of regional climate change, and improve rice cultivation management.

  • https://doi.org/10.5338/KJEA.2022.41.1.03 인용 PDF KSCI

A Study on the Distribution Characteristics of Bromide and Bromate in Drinking Water in Northern Gyeonggi Area (경기북부지역 먹는 물 중 브롬이온 및 브롬산염의 분포특성에 관한 연구)

  • Jung, Jong-Pil;Choi, Si-Rim;Ryu, Hyeung-Rial;Park, Gyoung-Su;Song, Hee-Il;Lee, Hyun-Jin;Jo, Mi-Hyun;Oh, Jo-Gyo;Yoon, Mi-Hye
    • Journal of Environmental Health Sciences
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    • v.44 no.3
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    • pp.244-249
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    • 2018

  • Objectives: The purpose of this study was the investigation of bromide and bromate in drinking water of water supply plants, mineral springs and small water supply system located in northern area of Gyeonggi province. Methods: Analytical method was based on EPA 326.0 to use Postcolumn reaction (PCR). The instrument was 887 professional UV/VIS detector IC manufactured in Metrohm. Results: Bromate was detected at $0.5{\sim}2.4{\mu}g/L$ in tap water from 5 water supply plants. These plants were used as disinfection method for sodium hypochlorite and on-site chlorine that causes generate bromate as a by products even if not used ozone. Conclusions: The bromate was detected up to $2.5{\mu}g/Lin$ drinking water in northern Gyeonggi area that showed within $10{\mu}g/L$ for standard of tap water. However, the continuous monitoring of bromate is necessary in drinking water.

  • https://doi.org/10.5668/JEHS.2018.44.3.244 인용 PDF KSCI