scholarly journals Determination of Per- and Polyfluoroalkyl Substances in Craft Villages and Industrial Environments of Vietnam

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Thi Vi Phung ◽  
Thuy Ngoc Nguyen ◽  
Lan-Anh Phan Thi ◽  
Hung Viet Pham ◽  
Hong Anh Duong
Keyword(s):  
Surface Water ◽  
Water Samples ◽  
Control Area ◽  
Treated Wastewater ◽  
Metal Plating ◽  
Textile Dyeing ◽  
Polyfluoroalkyl Substances ◽  
Industrial Environments ◽  
Wastewater Samples ◽  
Surface Water Samples

Per- and polyfluoroalkyl substances (PFASs) have attracted great concern because of their great recalcitrant nature and harmful environmental health effects. Eight PFASs in wastewater from craft villages and industrial environments of Vietnam were analyzed using liquid chromatography triple quadrupole mass spectrometry (LC-MS/MS) with negative electrospray ionization interface. For analysis of PFASs, percent recoveries ranged from 87 to 112, and MQL varied from 0.19 ng/L to 0.49 ng/L. Treated wastewater samples from eight metal-plating and eight textile-dyeing factories were collected for analysis of PFASs. Concentrations of PFOS in wastewater samples obtained from metal-plating factories with decorative plating stage were found at a range of 0.73–18.91 ng/L. For textile-dyeing factories, PFOA and/or PFHxA, which were present in all effluent wastewater samples, varied from 0.37 to 15.96 ng/L and 1.07 to 43.58 ng/L, respectively. Sixty surface water samples in four locations of the textile dyeing craft villages, a recycling plastic village, a paper recycling village, and 10 river water samples in the control area (a rural area without specific waste sources) were collected and analyzed for PFASs. The total concentrations of eight PFASs in surface water samples of craft villages ranged from 0.83 to 58.2 ng/L, which were significantly higher than those in the control area. PFOA, PFHxA, and PFOS are the three most dominant congeners in wastewater taken from craft villages with the highest concentrations of 27.4, 23.8, and 7.36 ng/L, respectively. The environmental risks posed by PFASs in surface water from craft villages were mainly in a range of extremely low to low level, particularly a few points have high ecological risks of PFDoA.

scholarly journals Prevalence of Vancomycin-Resistant Enterococci and Antimicrobial Residues in Wastewater and Surface Water

Life ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1403
Author(s):  
Kristýna Hricová ◽  
Magdaléna Röderová ◽  
Petr Fryčák ◽  
Volodymyr Pauk ◽  
Ondřej Kurka ◽  
...  
Keyword(s):  
Surface Water ◽  
Resistance Genes ◽  
Water Samples ◽  
Antimicrobial Agents ◽  
Wastewater Treatment Plants ◽  
Resistant Bacteria ◽  
Vancomycin Resistant Enterococci ◽  
Vancomycin Resistant ◽  
Wastewater Samples ◽  
Surface Water Samples

Due to the extensive use of antimicrobial agents in human and veterinary medicine, residues of various antimicrobials get into wastewater and, subsequently, surface water. On the one hand, a combination of processes in wastewater treatment plants aims to eliminate chemical and biological pollutants; on the other hand, this environment may create conditions suitable for the horizontal transfer of resistance genes and potential selection of antibiotic-resistant bacteria. Wastewater and surface water samples (Morava River) were analyzed to determine the concentrations of 10 antibiotics and identify those exceeding so-called predicted no-effect environmental concentrations (PNECs). This study revealed that residues of five of the tested antimicrobials, namely ampicillin, clindamycin, tetracycline, tigecycline and vancomycin, in wastewater samples exceeded the PNEC. Vancomycin concentrations were analyzed with respect to the detected strains of vancomycin-resistant enterococci (VRE), in which the presence of resistance genes, virulence factors and potential relationship were analyzed. VRE were detected in 16 wastewater samples (11%) and two surface water samples (6%). The PNEC of vancomycin was exceed in 16% of the samples. Since the detected VRE did not correlate with the vancomycin concentrations, no direct relationship was confirmed between the residues of this antimicrobials and the presence of the resistant strains.

scholarly journals Molecular Characterization ofCryptosporidium Oocysts in Samples of Raw Surface Water and Wastewater

2001 ◽  
Vol 67 (3) ◽  
pp. 1097-1101 ◽  
Author(s):  
Lihua Xiao ◽  
Ajaib Singh ◽  
Josef Limor ◽  
Thaddeus K. Graczyk ◽  
Steve Gradus ◽  
...  
Keyword(s):  
Surface Water ◽  
Water Samples ◽  
The United States ◽  
Small Subunit ◽  
Small Subunit Rrna ◽  
Pcr Rflp ◽  
Water And Wastewater ◽  
Wastewater Samples ◽  
Surface Water Samples ◽  
Raw Wastewater

ABSTRACT Recent molecular characterizations of Cryptosporidiumparasites make it possible to differentiate the human-pathogenicCryptosporidium parasites from those that do not infect humans and to track the source of Cryptosporidium oocyst contamination in the environment. In this study, we used a small-subunit rRNA-based PCR-restriction fragment length polymorphism (RFLP) technique to detect and characterize Cryptosporidiumoocysts in 55 samples of raw surface water collected from several areas in the United States and 49 samples of raw wastewater collected from Milwaukee, Wis. Cryptosporidium parasites were detected in 25 surface water samples and 12 raw wastewater samples. C. parvum human and bovine genotypes were the dominantCryptosporidium parasites in the surface water samples from sites where there was potential contamination by humans and cattle, whereas C. andersoni was the most common parasite in wastewater. There may be geographic differences in the distribution ofCryptosporidium genotypes in surface water. The PCR-RFLP technique can be a useful alternative method for detection and differentiation of Cryptosporidium parasites in water.

Occurrence of 1,4-dioxane and MTBE in drinking water sources in Japan

2006 ◽  
Vol 6 (2) ◽  
pp. 47-53 ◽  
Author(s):  
D. Simazaki ◽  
M. Asami ◽  
T. Nishimura ◽  
S. Kunikane ◽  
T. Aizawa ◽  
...  
Keyword(s):  
Drinking Water ◽  
Surface Water ◽  
Water Samples ◽  
Quality Standards ◽  
Raw Water ◽  
Water Quality Standards ◽  
Butyl Ether ◽  
Water Treatment Plants ◽  
Standard Value ◽  
Surface Water Samples

Nationwide surveys of 1,4-dioxane and methyl-t-butyl ether (MTBE) levels in raw water used for the drinking water supply were conducted at 91 water treatment plants in Japan in 2001 and 2002, prior to the revision of the drinking water quality standards. 1,4-dioxane was widely and continuously detected in raw water samples and its occurrence was more frequent and its concentrations higher in groundwater than in surface water. However, its maximum concentration in raw water was much lower than its new standard value (50 μg/L), which was determined as a level of 10−5 excessive cancer risk to humans. Trace levels of MTBE were also detected in several surface water samples.

scholarly journals Development of Surface Molecularly Imprinted Polymers as Dispersive Solid Phase Extraction Coupled with HPLC Method for the Removal and Detection of Griseofulvin in Surface Water

2019 ◽  
Vol 17 (1) ◽  
pp. 134 ◽  
Author(s):  
Kamran Bashir ◽  
Zhimin Luo ◽  
Guoning Chen ◽  
Hua Shu ◽  
Xia Cui ◽  
...  
Keyword(s):  
Surface Water ◽  
Solid Phase Extraction ◽  
Molecularly Imprinted Polymers ◽  
Water Samples ◽  
Solid Phase ◽  
Phase Extraction ◽  
Dispersive Solid Phase Extraction ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Surface Water Samples

Griseofulvin (GSF) is clinically employed to treat fungal infections in humans and animals. GSF was detected in surface waters as a pharmaceutical pollutant. GSF detection as an anthropogenic pollutant is considered as a possible source of drug resistance and risk factor in ecosystem. To address this concern, a new extraction and enrichment method was developed. GSF-surface molecularly imprinted polymers (GSF-SMIPs) were prepared and applied as solid phase extraction (SPE) sorbent. A dispersive solid phase extraction (DSPE) method was designed and combined with HPLC for the analysis of GSF in surface water samples. The performance of GSF-SMIPs was assessed for its potential to remove GSF from water samples. The factors affecting the removal efficiency such as sample pH and ionic strength were investigated and optimized. The DSPE conditions such as the amount of GSF-SMIPs, the extraction time, the type and volume of desorption solvents were also optimized. The established method is linear over the range of 0.1–100 µg/mL. The limits of detection and quantification were 0.01 and 0.03 µg/mL respectively. Good recoveries (91.6–98.8%) were achieved after DSPE. The intra-day and inter-day relative standard deviations were 0.8 and 4.3% respectively. The SMIPs demonstrated good removal efficiency (91.6%) as compared to powder activated carbon (67.7%). Moreover, the SMIPs can be reused 10 times for water samples. This is an additional advantage over single-use activated carbon and other commercial sorbents. This study provides a specific and sensitive method for the selective extraction and detection of GSF in surface water samples.

Occurrence and fate of rosuvastatin, rosuvastatin lactone, and atorvastatin in Canadian sewage and surface water samples

Chemosphere ◽  
2009 ◽  
Vol 77 (10) ◽  
pp. 1285-1291 ◽  
Author(s):  
Hing-Biu Lee ◽  
Thomas E. Peart ◽  
M. Lewina Svoboda ◽  
Sean Backus
Keyword(s):  
Surface Water ◽  
Water Samples ◽  
Surface Water Samples

A comparative study of radon levels in underground and surface water samples of Faridabad district of Southern Haryana, India

2018 ◽  
Vol 319 (3) ◽  
pp. 907-916 ◽  
Author(s):  
Bhupender Singh ◽  
Krishan Kant ◽  
Maneesha Garg ◽  
Ajit Singh ◽  
B. K. Sahoo ◽  
...  
Keyword(s):  
Surface Water ◽  
Comparative Study ◽  
Water Samples ◽  
Surface Water Samples

scholarly journals Analysis of Ground and Surface Water Samples from some Area of Dhaka City for Polycyclic Aromatic Hydrocarbons (PAHs)

2015 ◽  
Vol 63 (1) ◽  
pp. 59-60 ◽  
Author(s):  
S Mandal ◽  
N Khuda ◽  
MR Mian ◽  
M Moniruzzaman ◽  
N Nahar ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Surface Water ◽  
Aromatic Hydrocarbons ◽  
Water Samples ◽  
Dhaka City ◽  
Polycyclic Aromatic ◽  
Surface Water Samples

Abstract not available DOI: http://dx.doi.org/10.3329/dujs.v63i1.21770 Dhaka Univ. J. Sci. 63(1): 59-60, 2015 (January)

scholarly journals Water Quality Assessment of Surface Waters and Wastewaters by Traditional and Ecotoxicological Indicators in Ogosta River, Bulgaria

2021 ◽  
Vol 25 (1) ◽  
pp. 25-40
Author(s):  
Galina Yotova ◽  
◽  
Svetlana Lazarova ◽  
Veronika Mihaylova ◽  
Tony Venelinov ◽  
...  
Keyword(s):  
Water Quality ◽  
Surface Waters ◽  
Water Samples ◽  
Arsenic Concentration ◽  
Sample Pretreatment ◽  
Water Quality Assessment ◽  
Natural Processes ◽  
Ecotoxicological Effect ◽  
Wastewater Samples ◽  
Surface Water Samples

Surface water samples in Ogosta River, Bulgaria and wastewater samples at the inlet and outlet of WWTP–Montana were tested for the traditional parameters and ecotoxicological effect. The river and Dam surface waters comply with category A1 of Directive 75/440/EEC for pH, EC, COD, TSS, NO3–, Cl–, SO42–, B, Ba, Co, Cr, Cu, Hg, Mn, Ni, Pb, Se, V and Zn; with category A2 for BOD5, NH4+–N and Fe; and with category A3 for TNb and As. The average annual concentrations of Al, Cr (III), Cr (VI) and U are lower than the set limits in the Water Framework Directive. Arsenic concentration in all the samples exceeds the maximum allowed concentration, a results from natural processes. All the levels of the studied parameters in the outlet wastewater samples are lower than the limits, set in Directive 91/271/EEC and in the complex permit of the WWTP. The results of the biotest Phytotoxkit F™ show low ecotoxicity of the water samples. Optimization of the sample pretreatment prior to this ecotoxicological test is analyzed and discussed.

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