Ratiometric detection of hypochlorite applying the restriction to 2-way ESIPT: simple design for “naked-eye” tap water analysis

2015 ◽  
Vol 39 (6) ◽  
pp. 4424-4429 ◽  
Author(s):  
Abhishek Manna ◽  
Shyamaprosad Goswami
Keyword(s):  
Water Analysis ◽  
Tap Water ◽  
Good Practice ◽  
Simple Design ◽  
Naked Eye ◽  
Ratiometric Detection ◽  
Tap Water Analysis

Chemosensor is sensitive enough to prove that boiling tap water for ten minutes is a good practice before drinking it.

Nanomolar Detection of Hypochlorite by a Rhodamine-Based Chiral Hydrazide in Absolute Aqueous Media: Application in Tap Water Analysis with Live-Cell Imaging

2014 ◽  
Vol 86 (13) ◽  
pp. 6315-6322 ◽  
Author(s):  
Shyamaprosad Goswami ◽  
Avijit Kumar Das ◽  
Abhishek Manna ◽  
Anup Kumar Maity ◽  
Partha Saha ◽  
...  
Keyword(s):  
Water Analysis ◽  
Live Cell Imaging ◽  
Cell Imaging ◽  
Tap Water ◽  
Aqueous Media ◽  
Live Cell ◽  
Nanomolar Detection ◽  
Tap Water Analysis

Interindividual Differences in Acuity for Odor and Aroma

1985 ◽  
Vol 60 (3) ◽  
pp. 723-730 ◽  
Author(s):  
Konrad J. Burdach ◽  
E. P. Köster ◽  
Jan H. A. Kroeze
Keyword(s):  
Water Analysis ◽  
Tap Water ◽  
Olfactory Sensitivity ◽  
Interindividual Differences ◽  
Sensory Test ◽  
Olfactory Acuity ◽  
Oral Stimulation ◽  
Olfactory Detection ◽  
Tap Water Analysis ◽  
Clear Differentiation

To determine the olfactory acuity of 27 subjects a sensory test was presented which was divided into 4 subtests, 2 for nasal and 2 for oral stimulation. Each subtest contained 28 (4 substances × 7 concentrations) olfactory detection tasks (items). The substances used were lemon and rum aroma as well as ethyl butyrate and amyl acetate, the solvents tap water and sugared tap water. Analysis showed that the test provided a clear differentiation between subjects of low, medium, and high olfactory acuity. The intercorrelations among the test substances and the split-half reliabilities of the subtests proved relatively high, whereas only moderate to low intercorrelations among the subtests were found. This was considered an effect of intraindividual variations of olfactory sensitivity. Finally, some conclusions for the construction of acuity tests for odor and aroma are presented.

Ion-Exchange Method for Analysis of Four Arsenic Species and its Application to Tap Water Analysis

1995 ◽  
Vol 28 (15) ◽  
pp. 2699-2718 ◽  
Author(s):  
E. González Soto ◽  
E. Alonso Rodríguez ◽  
P. López Mahía ◽  
S. Muniategui Lorenzo ◽  
D. Prada Rodríguez
Keyword(s):  
Ion Exchange ◽  
Water Analysis ◽  
Tap Water ◽  
Arsenic Species ◽  
Exchange Method ◽  
Tap Water Analysis ◽  
Ion Exchange Method

scholarly journals Fluorescence and Naked-Eye Detection of Pb2+ in Drinking Water Using a Low-Cost Ionophore Based Sensing Scheme

2018 ◽  
Author(s):  
Aron Hakonen ◽  
Niklas Strömberg
Keyword(s):  
Drinking Water ◽  
Tap Water ◽  
Low Cost ◽  
Consumer Products ◽  
Lead Ion ◽  
Eye Detection ◽  
Naked Eye ◽  
Highly Sensitive ◽  
Naked Eye Detection

Drinking water contamination of lead from various environmental sources, leaching consumer products and intrinsic water-pipe infrastructure is still today a matter of great concern. Therefore, new highly sensitive and convenient Pb2+ measurement schemes are necessary, especially for in-situ measurements at a low-cost. Within this work dye/ionophore/Pb2+ co-extraction and effective water phase de-colorization was utilized for highly sensitive lead measurements and sub-ppb naked-eye detection. A low-cost ionophore Benzo-18-Crown-6-ether was used, and a simple test-tube mix and separate procedure was developed. Instrumental detection limits were in the low ppt region (LOD=3, LOQ=10), and naked-eye detection was 500 ppt. Note, however, that this sensing scheme still has improvement potential as concentrations of fluorophore and ionophore were not optimized. Artificial tap-water samples, leached by a standardized method, demonstrated drinking water application. Implications for this method are convenient in-situ lead ion measurements.

Cascade reaction-based rapid and ratiometric detection of H2S/S2− in the presence of bio-thiols with live cell imaging: demasking of ESIPT approach

RSC Advances ◽  
2014 ◽  
Vol 4 (107) ◽  
pp. 62639-62643 ◽  
Author(s):  
Shyamaprosad Goswami ◽  
Abhishek Manna ◽  
Monalisa Mondal ◽  
Debasish Sarkar
Keyword(s):  
Excited State ◽  
Benzoic Acid ◽  
Live Cell Imaging ◽  
Cell Imaging ◽  
Intramolecular Proton Transfer ◽  
Phenyl Ester ◽  
Eye Detection ◽  
Naked Eye ◽  
Ratiometric Detection ◽  
Naked Eye Detection

For the rapid, ratiometric, fluorogenic and “naked eye” detection of H2S/S2−, a pro-excited state intramolecular proton transfer (ESIPT)-based receptor, 2-formyl-benzoic acid 2-benzothiazol-2-yl-phenyl ester (FBBP), has been designed.

A dual-emissive fluorescent sensor fabricated by encapsulating quantum dots and carbon dots into metal–organic frameworks for the ratiometric detection of Cu2+ in tap water

2017 ◽  
Vol 5 (33) ◽  
pp. 8566-8571 ◽  
Author(s):  
Yujie Ma ◽  
Guanhong Xu ◽  
Fangdi Wei ◽  
Yao Cen ◽  
Yunsu Ma ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Carbon Dots ◽  
Fluorescent Sensor ◽  
Tap Water ◽  
Metal Organic Frameworks ◽  
Ratiometric Detection ◽  
Metal Organic

A new ratiometric fluorescent sensor (QDs/CDs@ZIF-8) combining the advantages of ratiometry and MOFs was synthesized for Cu2+ detection.

Coupling a novel spiro-rhodamine B lactam derivative to Fe3O4 nanoparticles for visual detection of free copper ions with high sensitivity and specificity

RSC Advances ◽  
2015 ◽  
Vol 5 (57) ◽  
pp. 45847-45852 ◽  
Author(s):  
Hongyan Zhang ◽  
Xiaoxue Zeng ◽  
Danlong Chen ◽  
Ying Guo ◽  
Wenjing Jiang ◽  
...  
Keyword(s):  
Sensitivity And Specificity ◽  
Rhodamine B ◽  
Fe3o4 Nanoparticles ◽  
Visual Detection ◽  
Copper Ions ◽  
Tap Water ◽  
High Sensitivity ◽  
Visual Sensor ◽  
Naked Eye

A novel spiro-rhodamine B lactam derivative, which can be coupled to Fe3O4 NPs and act as a Cu2+-selective visual sensor is reported. It can be used to directly detect as little as 50 nM of Cu2+ in river or tap water by only naked-eye observation.

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