Nitrogen- and Sulfur-Codoped Carbon Dots for Highly Selective and Sensitive Fluorescent Detection of Hg2+ Ions and Sulfide in Environmental Water Samples

2019 ◽  
Vol 67 (10) ◽  
pp. 2794-2800 ◽  
Author(s):  
Huifang Wu ◽  
Changlun Tong
Keyword(s):  
Water Samples ◽  
Carbon Dots ◽  
Environmental Water ◽  
Fluorescent Detection ◽  
Environmental Water Samples

Carbon dots based turn-on fluorescent probes for the sensitive determination of glyphosate in environmental water samples

RSC Advances ◽  
2016 ◽  
Vol 6 (89) ◽  
pp. 85820-85828 ◽  
Author(s):  
Long Wang ◽  
Yidan Bi ◽  
Jia Gao ◽  
Yijia Li ◽  
Hong Ding ◽  
...  
Keyword(s):  
Fluorescent Probes ◽  
Water Samples ◽  
Carbon Dots ◽  
Environmental Water ◽  
Environmental Water Samples ◽  
Turn On ◽  
Sensitive Determination

Schematic illustration of Cu2+ and glyphosate detection using the CDs.

Synthesis of polyethyleneimine capped carbon dots for preconcentration and slurry sampling analysis of trace chromium in environmental water samples

Talanta ◽  
2015 ◽  
Vol 134 ◽  
pp. 16-23 ◽  
Author(s):  
Yue Liu ◽  
Jia Hu ◽  
Yan Li ◽  
Hai-Ping Wei ◽  
Xiao-Shuang Li ◽  
...  
Keyword(s):  
Water Samples ◽  
Carbon Dots ◽  
Environmental Water ◽  
Environmental Water Samples ◽  
Slurry Sampling

Improving Mycobacterium spp. detection in water: a new methodological proposal

2004 ◽  
Vol 4 (2) ◽  
pp. 103-106
Author(s):  
R. Santos ◽  
S. Gonçalves ◽  
F. Macieira ◽  
F. Oliveira ◽  
R. Rodrigues ◽  
...  
Keyword(s):  
Water Samples ◽  
Recovery Rate ◽  
Opportunistic Infections ◽  
Environmental Water ◽  
Environmental Water Samples ◽  
Sample Treatment ◽  
Detection Time ◽  
Fast Detection ◽  
Enrichment Step ◽  
Mycobacterium Spp

In recent years, non-tuberculous mycobacteria (NTM), once considered merely environmental saprophytes, have emerged as a major cause of opportunistic infections. There is no evidence of human-to-human transmission but they have been found in several environmental water samples. It is, therefore, of the utmost importance to develop methods of rapidly and accurately detecting non-tuberculous mycobacteria in water samples. To obtain a maximum recovery rate and a reduction of Mycobacterium spp. detection time in water samples, different decontamination, enrichment procedures and antibiotics supplements were tested before the inoculation into the Bactec® system. The proposed method of sample treatment (decrease in the decontamination time, followed for a peptone pre-enrichment step and an aztreonam and cefepime supplement) before the inoculation into the Bactec® system proved to be a good option for reliable and fast detection of Mycobacterium spp. in water samples.

The Occurrence of Male-Specific and Somatic Bacteriophages in Polluted South African Waters

1991 ◽  
Vol 24 (2) ◽  
pp. 251-254 ◽  
Author(s):  
R. Kfir ◽  
P. Coubrough ◽  
W. O. K. Grabow
Keyword(s):  
South African ◽  
Water Samples ◽  
Biological Treatment ◽  
Environmental Water ◽  
Environmental Water Samples ◽  
Resistance Pattern ◽  
Male Specific

The occurrence of somatic (F') and male-specific (F') coliphages and Salmonella phages in a variety of environmental water samples was studied using different bacterial hosts. The number of plaque-forming units (pfu) of the different bacteriophages were compared and their resistance pattern to a biological treatment (humus tank) and chlorination was evaluated. The presence of the bacteriophages in shellfish was also studied. The morphology of isolate bacteriophages was examined as well as the visibility of the different plaques formed. Coliphages were found to produce larger and clearer plaques than all other bacteriophages studied. In most of the environmental water samples coliphages outnumbered all other bacteriophages, with the exception of dam water in which higher levels of F' Salmonella phages were detected. The majority of the F' Salmonella phages were shown to be RNA bacteriophages.

Sign in / Sign up

Export Citation Format

Share Document