ASSESSMENT OF POLLUTION AND ENVIRONMENTAL RISK OF MINE ACID WATERS FROM CONTAMINATED MINING SITES ON SURFACE WATERS IN THE BRAD PERIMETER

2019 ◽  
Author(s):  
Emilia-Cornelia Dunca
Keyword(s):  
Surface Waters ◽  
Environmental Risk ◽  
Mining Sites ◽  
Mine Acid ◽  
Acid Waters

scholarly journals Occurrence of pharmaceuticals in surface waters: analytical method development and environmental risk assessment

2015 ◽  
Vol 95 (13) ◽  
pp. 1242-1262 ◽  
Author(s):  
Christina I. Nannou ◽  
Christina I. Kosma ◽  
Triantafyllos A. Albanis
Keyword(s):  
Risk Assessment ◽  
Surface Waters ◽  
Environmental Risk ◽  
Environmental Risk Assessment ◽  
Analytical Method ◽  
Method Development

Time-Resolved Fluoroimmunoassay as an Advantageous Analytical Method for Assessing the Total Concentration and Environmental Risk of Fluoroquinolones in Surface Waters

2012 ◽  
Vol 47 (1) ◽  
pp. 454-462 ◽  
Author(s):  
Zhen Zhang ◽  
Jing-fu Liu ◽  
Ting-ting Feng ◽  
Yan Yao ◽  
Li-hong Gao ◽  
...  
Keyword(s):  
Surface Waters ◽  
Environmental Risk ◽  
Analytical Method ◽  
Total Concentration ◽  
Time Resolved

scholarly journals SOIL PHOSPHORUS THRESHOLDS IN EVALUATING RISK OF ENVIRONMENTAL TRANSFER TO SURFACE WATERS IN SANTA CATARINA, BRAZIL

2015 ◽  
Vol 39 (4) ◽  
pp. 1225-1234 ◽  
Author(s):  
Luciano Colpo Gatiboni ◽  
Thomas Jot Smyth ◽  
Djalma Eugenio Schmitt ◽  
Paulo Cezar Cassol ◽  
Clovisson Menotti Boeira de Oliveira
Keyword(s):  
Surface Waters ◽  
Environmental Risk ◽  
Change Point ◽  
Clay Content ◽  
The State ◽  
Available P ◽  
Santa Catarina ◽  
Soil P ◽  
Soil Clay ◽  
Soil Clay Content

The State of Santa Catarina, Brazil, has agricultural and livestock activities, such as pig farming, that are responsible for adding large amounts of phosphorus (P) to soils. However, a method is required to evaluate the environmental risk of these high soil P levels. One possible method for evaluating the environmental risk of P fertilization, whether organic or mineral, is to establish threshold levels of soil available P, measured by Mehlich-1 extractions, below which there is not a high risk of P transfer from the soil to surface waters. However, the Mehlich-1 extractant is sensitive to soil clay content, and that factor should be considered when establishing such P-thresholds. The objective of this study was to determine P-thresholds using the Mehlich-1 extractant for soils with different clay contents in the State of Santa Catarina, Brazil. Soil from the B-horizon of an Oxisol with 800 g kg-1 clay was mixed with different amounts of sand to prepare artificial soils with 200, 400, 600, and 800 g kg-1 clay. The artificial soils were incubated for 30 days with moisture content at 80 % of field capacity to stabilize their physicochemical properties, followed by additional incubation for 30 days after liming to raise the pH(H2O) to 6.0. Soil P sorption curves were produced, and the maximum sorption (Pmax) was determined using the Langmuir model for each soil texture evaluated. Based on the Pmax values, seven rates of P were added to four replicates of each soil, and incubated for 20 days more. Following incubation, available P contents (P-Mehlich-1) and P dissolved in the soil solution (P-water) were determined. A change-point value (the P-Mehlich-1 value above which P-water starts increasing sharply) was calculated through the use of segmented equations. The maximum level of P that a soil might safely adsorb (P-threshold) was defined as 80 % of the change-point value to maintain a margin for environmental safety. The P-threshold value, in mg dm-3, was dependent on the soil clay content according to the model P-threshold = 40 + Clay, where the soil clay content is expressed as a percentage. The model was tested in 82 diverse soil samples from the State of Santa Catarina and was able to distinguish samples with high and low environmental risk.

scholarly journals Environmental Risk and Risk of Resistance Selection Due to Antimicrobials’ Occurrence in Two Polish Wastewater Treatment Plants and Receiving Surface Water

Molecules ◽  
2020 ◽  
Vol 25 (6) ◽  
pp. 1470 ◽  
Author(s):  
Joanna Giebułtowicz ◽  
Grzegorz Nałęcz-Jawecki ◽  
Monika Harnisz ◽  
Dawid Kucharski ◽  
Ewa Korzeniewska ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Surface Waters ◽  
Environmental Risk ◽  
Wastewater Treatment Plants ◽  
Spectrometry Method ◽  
Resistance Risk ◽  
Resistance Selection ◽  
Eukaryotic Species ◽  
Receiving Waters ◽  
Watch List

In this study, a screening of 26 selected antimicrobials using liquid chromatography coupled to a tandem mass spectrometry method in two Polish wastewater treatment plants and their receiving surface waters was provided. The highest average concentrations of metronidazole (7400 ng/L), ciprofloxacin (4300 ng/L), vancomycin (3200 ng/L), and sulfamethoxazole (3000 ng/L) were observed in influent of WWTP2. Ciprofloxacin and sulfamethoxazole were the most dominant antimicrobials in influent and effluent of both WWTPs. In the sludge samples the highest mean concentrations were found for ciprofloxacin (up to 28 μg/g) and norfloxacin (up to 5.3 μg/g). The removal efficiency of tested antimicrobials was found to be more than 50% for both WWTPs. However, the presence of antimicrobials influenced their concentrations in the receiving waters. The highest antimicrobial resistance risk was estimated in influent of WWTPs for azithromycin, ciprofloxacin, clarithromycin, metronidazole, and trimethoprim and in the sludge samples for the following antimicrobials: azithromycin, ciprofloxacin, clarithromycin, norfloxacin, trimethoprim, ofloxacin, and tetracycline. The high environmental risk for exposure to azithromycin, clarithromycin, and sulfamethoxazole to both cyanobacteria and eukaryotic species in effluents and/or receiving water was noted. Following the obtained results, we suggest extending the watch list of the Water Framework Directive for Union-wide monitoring with sulfamethoxazole.

scholarly journals Monitoring of surface water and bottom sediments at the area of the gas transportation objects in the cryolithozone

2018 ◽  
pp. 64-68 ◽  
Author(s):  
S. D. Ganova ◽  
O. V. Skopintseva
Keyword(s):  
Surface Water ◽  
Bottom Sediments ◽  
Surface Waters ◽  
Environmental Risk ◽  
Water Loss ◽  
Control Points ◽  
Regulatory Requirements ◽  
Large Lakes ◽  
Low Levels

This paper presents a program of observation of the surface water and bottom sediments. In accordance with existing regulatory requirements, these elements are directly connected, which allows determination of the water loss and the level of geochemical contamination of rivers and large lakes due to dissolution, migration and accumulation of chemicals in the proper water intake areas, in background and in control points of water bodies. Since monitoring of the surface waters and of the bottom sediments is a part of the complex geoecological monitoring, it is necessary to reflect the feasibility of the work and, accordingly, its objectivity. In addition, results should be reliable and complete, and information received during the observations should be presented in a manner that is convenient for the consumer, which requires additional steps of systematization of the information obtained, data processing and formation of the information banks. When designing a network of monitoring points in the study area, we should follow the same principle that is used for determination of sustainability category of geoecological systems: with other identical conditions, monitoring points should be located in places characterized by low levels of stability and within the zones of exposure to high environmental risk objects.

Prioritization and environmental risk assessment of pharmaceuticals mixtures from Brazilian surface waters

2021 ◽  
pp. 117803
Author(s):  
Eduarda O. Reis ◽  
Lucilaine V.S. Santos ◽  
Liséte C. Lange
Keyword(s):  
Risk Assessment ◽  
Surface Waters ◽  
Environmental Risk ◽  
Environmental Risk Assessment

Predicting Pesticide Environmental Risk in Intensive Agricultural Areas. II: Screening Level Risk Assessment of Complex Mixtures in Surface Waters

2009 ◽  
Vol 43 (2) ◽  
pp. 530-537 ◽  
Author(s):  
Roberto Verro ◽  
Antonio Finizio ◽  
Stefan Otto ◽  
Marco Vighi
Keyword(s):  
Risk Assessment ◽  
Surface Waters ◽  
Environmental Risk ◽  
Complex Mixtures ◽  
Agricultural Areas
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