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Contamination Indices and Heavy Metal Concentrations in Urban Garden Soil of Busan Metropolis
곽진숙,조갑제,주광용,송복주 한국토양비료학회 2019 한국토양비료학회지 Vol.52 No.4
To identify the concentrations of heavy metals and to assess soil environmental quality 29 soil samples werecollected from Urban area (UA) and Suburban area (SA) in Busan, Korea. An assessment was conductedusing soil pollution index (SPI) and geoaccumulation (Igeo) in order to establish the concentration of heavymetal. Accumulation of heavy metals in urban vegetable soils are affected by multiple factors including soil properties and climatic conditions. The concentration of Cd, Cu, As, Hg, Pb, Cr6+, Zn, and Ni were found to be greater in soils more than the background. The geoaccumulation map revealed index of geoaccumulation (Igeo) beyond class 2 (medium pollution) for As and Ni in Suburban area (SA), whereas Hg is enriched in Urban area (UA).
부산지역 사업장 폐수 중 총유기탄소(TOC)와 유기물 지표간 상관관계 연구
최성화,정미은,주광용,최유정,윤나나,곽진숙,이주희,김유라,전대영 한국환경분석학회 2020 환경분석과 독성보건 Vol.23 No.1
The introduction of total organic carbon (TOC) as a new organic matter index for industrial wastewater is under consideration. In this study, we investigated characteristics of organic pollutant indexes (TOC, BOD5, CODMn, CODCr) for 11 industrial categories comprising 210 industrial wastewater samples from Busan, Korea. Average organic concentrations for chemical manufacturing and food manufacturing industries are higher than that for other industries. The organic matter oxidation rates of CODCr and CODMn for TOC are 88.7% and 51.9%, respectively. Furthermore, the COD test can be underestimated for organic compounds in wastewater. The correlation between TOC and organic matter indexes was in the order of CODMn (r = 0.970) > CODCr (r = 0.956) > BOD5 (r = 0.812)(p < 0.01). In conclusion, the introduction of TOC, which has higher oxidation rate than COD and high correlation with existing organic matter indexes, is appropriate as an organic index to replace COD.
A Study of the Urban Garden Soil Health in Busan Area
곽진숙,조은정,정미은,주광용,전대영,정휘철 한국토양비료학회 2018 한국토양비료학회지 Vol.51 No.3
The study of urban agriculture is focused on conceptual, active and policy establishment, and studies on the health of the vegetable gardens are minimal. This study analyzed the chemical properties of urban vegetable soils. The area of 29 urban vegetable gardens in the Busan area was divided into suburban area and urban areas. In the urban areas, the soil of the vegetable garden is high in content of organic matter and exchangeable cationalities and it is believed that there is more fertilizer in urban areas. The average value and range of soil fertility items are 6.87 (5.64~8.04) for pH, 43.4 g/kg (6.6~88.3) for organic matters, 845.3 mg/kg (115.9~2758.1) for available phosphate, 1.30 cmol/kg (0.23~3.66) for K+, 17.27 cmol/kg (6.05~46.50) for Ca2+, 2.88 cmol/kg (0.94~3.49) for Mg2+, 2.66 ds/m (0.53~10.40) for conductivity.