Song‐Hee Ryu
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View article: Quantitative microbial risk assessment of antibiotic resistance genes and mobile genetic elements in orchard soils across South Korea
Quantitative microbial risk assessment of antibiotic resistance genes and mobile genetic elements in orchard soils across South Korea Open
Antibiotic resistance is a global health crisis, but environmental pathways of resistance dissemination to farm workers remain poorly understood. Agricultural soils represent critical but underexplored reservoirs of antibiotic resistance g…
View article: Relationship assessment of the residual antibiotics and the amount of N component by different production stages of liquid fertilizer from livestock manure
Relationship assessment of the residual antibiotics and the amount of N component by different production stages of liquid fertilizer from livestock manure Open
After application of veterinary antibiotics, they may be partially metabolized before they are excreted by feces or urine either as unaltered form or as metabolites.Residual antibiotics enter the adjacent agricultural environments by spray…
View article: Development of analytical method for veterinary antibiotics and monitoring of residuals in agricultural environment
Development of analytical method for veterinary antibiotics and monitoring of residuals in agricultural environment Open
Veterinary antibiotics (VAs) administered to livestock are introduced into the soil through livestock manure and compost. These antibiotics can run off to surface water or leach into groundwater during rainfall, causing problems such as an…
View article: Dynamics of Genotypic and Phenotypic Antibiotic Resistance in a Conventional Wastewater Treatment Plant in 2 Years
Dynamics of Genotypic and Phenotypic Antibiotic Resistance in a Conventional Wastewater Treatment Plant in 2 Years Open
Wastewater treatment plants (WWTPs) are considered a sink and a source of antibiotic resistance. In this study, we applied both culture-dependent and SmartChip-based culture-independent approaches for the investigation of antibiotic-resist…
View article: Residue and risk assessment of veterinary antibiotics in manure-based composts and agricultural soils
Residue and risk assessment of veterinary antibiotics in manure-based composts and agricultural soils Open
While veterinary antibiotics are used only in a part of the dose administered, the rest are excreted as urine or feces.Residual antibiotics enter the adjacent agricultural environments by spraying manure-based composts on farmlands and lea…
View article: A comparison of the effectiveness of QuEChERS, FaPEx and a modified QuEChERS method on the determination of organochlorine pesticides in ginseng
A comparison of the effectiveness of QuEChERS, FaPEx and a modified QuEChERS method on the determination of organochlorine pesticides in ginseng Open
This study provides a review of methods used in the determination of organochlorine pesticides (OCPs) in ginseng and compares the effectiveness of three extraction methods (Quick, Easy, Cheap, Effective, Rugged, and Safe (QuEChERS), a modi…
View article: Identification of reduced plant uptake and reduction effects of azoxystrobin, procymidone and tricyclazole by biochars and quicklime
Identification of reduced plant uptake and reduction effects of azoxystrobin, procymidone and tricyclazole by biochars and quicklime Open
As pesticide safety was extended to agricultural environments and Positive List System was carried out, Pesticide safety management in soils has become even more important.To improve pesticide safety in soils needs the degradation technolo…
View article: Effect of Sulfadimethoxine, Oxytetracycline, and Streptomycin Antibiotics in Three Types of Crop Plants—Root, Leafy, and Fruit
Effect of Sulfadimethoxine, Oxytetracycline, and Streptomycin Antibiotics in Three Types of Crop Plants—Root, Leafy, and Fruit Open
(1) Background: Plants act as the natural sink for a variety of toxins in the environment, including veterinary antibiotics (VAs). The objective of this study was to evaluate the uptake and fate of sulfadimethoxine (SDZ), oxytetracycline (…
View article: Monitoring of Pesticide Residues Concerned in Stream Water
Monitoring of Pesticide Residues Concerned in Stream Water Open
BACKGROUND:This study was carried out to investigate pesticide residues from fifty streams in Korea.Water samples were collected at two times.Thee first sampling was performed from april to may, which was the season for start of pesticide …
View article: Investigation of Residual Organochlorine Pesticides in Apple and Pear Orchard Soil and Fruit
Investigation of Residual Organochlorine Pesticides in Apple and Pear Orchard Soil and Fruit Open
BACKGROUND:Residual organochlorine pesticides (OCPs) are designated as persistent organic pollutants (POPs) by Stockholm Convention because they bioaccumulate through the food web, and pose a risk of causing adverse effect to human health …
View article: Investigation of Residual Organochlorine Pesticides in Apple and Pear Orchard Soil and Fruit
Investigation of Residual Organochlorine Pesticides in Apple and Pear Orchard Soil and Fruit Open
BACKGROUND:Residual organochlorine pesticides (OCPs) are designated as persistent organic pollutants (POPs) by Stockholm Convention because they bioaccumulate through the food web, and pose a risk of causing adverse effect to human health …
View article: Plant uptake potential of endosulfan from soil by carrot and spinach
Plant uptake potential of endosulfan from soil by carrot and spinach Open
Residual endosulfan in an agricultural environment has been reported, although endosulfan was listed to persistent organic pollutants and banned. To produce the safe crop from endosulfan residue risk, the plant uptake potential of endosulf…
View article: Exposure Assessment of Pesticide-Originated Persistent Organic Pollutants in Paddy and Upland Soils in Korea
Exposure Assessment of Pesticide-Originated Persistent Organic Pollutants in Paddy and Upland Soils in Korea Open
BACKGROUND:This study was conducted to investigate residual organochlorine pesticides (ROCPs) in agricultural soils and crops.Agricultural soil samples and crop samples were collected from 93 cities and counties.METHODS AND RESULTS: Extrac…
View article: Quantitative Determination of Ascaridole, Carvacrol and p-Cymene in the Biopesticides Products Derived from Chenopodium ambrosioides L. Extracts by Gas Chromatography
Quantitative Determination of Ascaridole, Carvacrol and p-Cymene in the Biopesticides Products Derived from Chenopodium ambrosioides L. Extracts by Gas Chromatography Open
Quantitative Determination of Ascaridole, Carvacrol and p-Cymene in the Biopesticides Products Derived from Chenopodium ambrosioides L. Extracts by Gas Chromatography-Ascaridole,Biopesticide,Carvacrol,p-cymene,Chenopodium ambrosioides L.
View article: Investigation of Resiudal Organochlorine Pesticides in Green Perilla (Perilla frutescens var. japonica Hara) Greenhouse Soil and Its Leaves
Investigation of Resiudal Organochlorine Pesticides in Green Perilla (Perilla frutescens var. japonica Hara) Greenhouse Soil and Its Leaves Open
본 연구에서는 들깨 시설재배지 토양 및 작물 중 잔류성유기염소계 농약의 잔류량을 조사하였다. 토양 및 작물 중 잔류성유기염소계 농약 분석을 위한 추출 및 정제는 QuEChERS 방법을 다소 개선한 방법으로 수행되었다. 들깨 시설재배지 토양 및 농산물 중 잔류성유기염소계 농약의 회수율은 각각 76.3-113.4 및 79.4-107.3%, 정량한계는 각각 0.03-0.24와 $0.33-0.50{\mu}g/kg$ 수준이었다. 들깨…
View article: Antimicrobial Activity of Ethanol Extracts from Medicinal Herbs and Its Active Compound against Plant Pathogens
Antimicrobial Activity of Ethanol Extracts from Medicinal Herbs and Its Active Compound against Plant Pathogens Open
BACKGROUND:The aim of this study was to investigate the antimicrobial effects of the ethanol extracts from various medicinal herbs against plant pathogens to understand the possible the crop protection agents.METHODS AND RESULTS: Among the…