scholarly journals STUDY ON THE CORROSION OF STEEL AND ZINC WITH FLOW VELOCITY AND CORROSION CONTROL BY THE VACUUM MEMBRANE DEAERATION SYSTEM IN TAP WATER : Analysis on the corrosion of steel and zinc and galvanic corrosion of gun metal/galvanized steel pipe

2006 ◽  
Vol 71 (608) ◽  
pp. 45-52
Author(s):  
Toshihiro YAMATE ◽  
Saburo MURAKAWA
Keyword(s):  
Flow Velocity ◽  
Water Analysis ◽  
Galvanic Corrosion ◽  
Tap Water ◽  
Galvanized Steel ◽  
Steel Pipe ◽  
Corrosion Control ◽  
Tap Water Analysis ◽  
Corrosion Of Steel

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

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.

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 Galvanic Corrosion Due to a Heterogeneous Sulfate Reducing Bacteria Biofilm

Coatings ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1116
Author(s):  
Hongwei Liu ◽  
Haixian Liu ◽  
Yuxuan Zhang
Keyword(s):  
Galvanic Corrosion ◽  
Steel Corrosion ◽  
Localized Corrosion ◽  
Cathodic Reaction ◽  
Anodic Reaction ◽  
Sulfate Reducing ◽  
Corrosion Effect ◽  
Desulfotomaculum Nigrificans ◽  
Corrosion Of Steel ◽  
Reducing Bacteria

In this work, the galvanic corrosion behavior of sulfate reducing Desulfotomaculum nigrificans biofilm-covered and uncovered carbon steel was investigated using various electrochemical measurements. The results showed that the bare specimen in the abiotic solution functions as the anode; whereas the biofilm-covered specimen in the SRB-containing solution functions as the cathode after two electrodes being coupled. The anodic reaction of specimen in the biotic solution containing SRB was inhibited; whereas the cathodic reaction was considerably promoted after coupling. Hence, localized corrosion of specimen in the abiotic solution was observed due to the galvanic corrosion effect. SRB could still accelerate steel corrosion even after coupling, but the results indicate that the contribution of SRB to steel corrosion decreased. The localized corrosion of steel in the SRB-containing environments not only involved the SRB biofilm, but also a galvanic corrosion effect. The flow of electrons from the anodic dissolution of Fe in the abiotic solution to the SRB cells of cathodic area decreased the acceptance capacity of electrons by SRB from steel beneath biofilm. As a result, the steel corrosion beneath SRB biofilm decreased after coupling.

The mechanisms of corrosion inhibition of hot-dip galvanized steel by vanadyl oxalate: A galvanic corrosion investigation supported by XPS

2018 ◽  
Vol 142 ◽  
pp. 153-160 ◽  
Author(s):  
Zhiqiang Gao ◽  
Dawei Zhang ◽  
Xiaopan Qiu ◽  
Sheming Jiang ◽  
Yucheng Wu ◽  
...  
Keyword(s):  
Corrosion Inhibition ◽  
Galvanic Corrosion ◽  
Galvanized Steel ◽  
Corrosion Investigation

scholarly journals The Impact of the Quality of Tap Water and the Properties of Installation Materials on the Formation of Biofilms

Water ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1903 ◽  
Author(s):  
Dorota Papciak ◽  
Barbara Tchórzewska-Cieślak ◽  
Andżelika Domoń ◽  
Anna Wojtuś ◽  
Jakub Żywiec ◽  
...  
Keyword(s):  
Tap Water ◽  
Galvanized Steel ◽  
Phosphorus Compounds ◽  
Plate Count ◽  
Nickel Steel ◽  
Quantitative Analyses ◽  
The Impact ◽  
First Time

The article presents changes in the quality of tap water depending on time spent in installation and its impact on the creation of biofilms on various materials (polyethylene (PE), polyvinyl chloride (PVC), chrome-nickel steel and galvanized steel). For the first time, quantitative analyses of biofilm were performed using methods such as: Adenosine 5’-triphosphate (ATP) measurement, flow cytometry, heterotrophic plate count and using fractographical parameters. In the water, after leaving the experimental installation, the increase of turbidity, content of organic compounds, nitrites and nitrates was found, as well as the decrease in the content of chlorine compounds, dissolved oxygen and phosphorus compounds. There was an increase in the number of mesophilic and psychrophilic bacteria. In addition, the presence of Escherichia coli was also found. The analysis of the quantitative determination of microorganisms in a biofilm indicates that galvanized steel is the most susceptible material for the adhesion of microorganisms. These results were also confirmed by the analysis of the biofilm morphology. The roughness profile, the thickness of the biofilm layer can be estimated at about 300 μm on galvanized steel.

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