scholarly journals Occurrence of Antimicrobials in River Water Samples from Rural Region of the State of Rio de Janeiro, Brazil

2016 ◽  
Vol 07 (02) ◽  
pp. 230-241 ◽  
Author(s):  
Mychelle Alves Monteiro ◽  
Bernardete Ferraz Spisso ◽  
Julia Rodrigues Martins Pastor dos Santos ◽  
Rafaela Pinto da Costa ◽  
Rosana Gomes Ferreira ◽  
...  
Keyword(s):  
River Water ◽  
Water Samples ◽  
Rio De Janeiro ◽  
The State ◽  
Rural Region ◽  
River Water Samples

Fabrication of dendritic nanoporous gold via a two-step amperometric approach: Application for electrochemical detection of methyl parathion in river water samples

Talanta ◽  
2021 ◽  
Vol 226 ◽  
pp. 122130
Author(s):  
Gilberto J. Silva Junior ◽  
Jéssica Soares Guimarães Selva ◽  
Anandhakumar Sukeri ◽  
Josué M. Gonçalves ◽  
Matias Regiart ◽  
...  
Keyword(s):  
River Water ◽  
Electrochemical Detection ◽  
Water Samples ◽  
Methyl Parathion ◽  
Nanoporous Gold ◽  
River Water Samples

Modified paramagnetic beads in a microfluidic system for the determination of ethinylestradiol (EE2) in river water samples

2010 ◽  
Vol 25 (6) ◽  
pp. 1376-1381 ◽  
Author(s):  
Noelia A. Martínez ◽  
Rudolf J. Schneider ◽  
Germán A. Messina ◽  
Julio Raba
Keyword(s):  
River Water ◽  
Water Samples ◽  
Microfluidic System ◽  
River Water Samples ◽  
Paramagnetic Beads

Spectrophotometry determination of Congo red in river water samples using nanosilver

2012 ◽  
Vol 94 (10) ◽  
pp. 1886-1892 ◽  
Author(s):  
R. Sahraei ◽  
A. Farmany ◽  
S.S. Mortazavi ◽  
H. Noorizadeh
Keyword(s):  
River Water ◽  
Water Samples ◽  
Congo Red ◽  
River Water Samples

Dispersive Liquid—Liquid Microextraction Based on Solidification of Floating Organic Drop Combined with High Performance Liquid Chromatography for Analysis of 15 Phthalates in Water

2019 ◽  
Vol 102 (3) ◽  
pp. 942-951 ◽  
Author(s):  
Danni Yang ◽  
Yi Yang ◽  
Yongxin Li ◽  
Shuo Yin ◽  
Yaling Chen ◽  
...  
Keyword(s):  
River Water ◽  
Water Samples ◽  
High Performance ◽  
Environmentally Friendly ◽  
Cost Effective ◽  
Uv Detection ◽  
Established Method ◽  
River Water Samples ◽  
Dispersive Liquid Liquid Microextraction ◽  
Liquid Microextraction

Abstract Background: Consistent toxicological evidence indicate that phthalates can cause adverse effects on human health. The concern over phthalate pollution and exposure has been emphasized in recent years. Therefore, the sensitive, reliable, and rapid detection of phthalates in water is of great importance. Objective: In this study, dispersive liquid–liquid microextraction based on solidification of floating organic droplet (DLLME-SFO) combined with HPLC-UV detection was established and applied in the preconcentration and detection of 15 phthalates in drinking and river water samples. Methods: A mixture of acetonitrile (dispersant) and 1-dodecanol (extractant) was injected into water samples, which had been added with sodium chloride. The cloudy solution was formed by hand-shaking. After centrifugation, the sample solution was cooled in a refrigerator, and the solidified organic droplet was collected. It melted at room temperature and was injected into the HPLC system for analysis. The quantification was based on the working curves. Results: Under optimum conditions, this method showed good linearity in the range of 0.1–100 or 0.5–100 μg/L with correlation coefficients greater than 0.999. The method had the LODs ranging from 0.013 to 0.16 μg/L with the enrichment factors of 102–218. The recoveries of the method ranged from 86.8 to 119% with RSDs less than 12.6%. The interday and intraday RSDs were 6.35–13.5% and 3.00–13.7%, respectively. The established method has been successfully applied to the analysis of phthalates in drinking and river waters. Conclusions: The established method is rapid, sensitive, cost-effective, and environmentally friendly. It can be applied to the analysis of 15 phthalates in drinking and river water samples. Highlights: A method of DLLME-SFO combined with HPLC-UV detection has been established for the analysis of 15 phthalates in drinking and river water samples. The established method was rapid, sensitive, accurate, cost-effective, and environmentally friendly. The established method was successfully applied to the analysis of 15 phthalates in bottled, tap, and river water samples.

Occurrence of Salivirus in Sewage and River Water Samples in Karaj, Iran

2019 ◽  
Vol 11 (2) ◽  
pp. 193-197 ◽  
Author(s):  
Maede Adineh ◽  
Mostafa Ghaderi ◽  
Seyed Dawood Mousavi-Nasab
Keyword(s):  
River Water ◽  
Water Samples ◽  
River Water Samples
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