Monitoring of hydrogen generated by corrosion reactions of steel

Abbassi, A.; Mihi, Abdelkader; Benbouta, Rachid

doi:10.1002/maco.200805000

Cited by 2 publications

(1 citation statement)

References 10 publications

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“…Several devices have been developed and discussed in more detail elsewhere [6][7][8] but none of them are entirely satisfactory. A recent development is a solid electrolyte (HUP) concentration cell utilizing hydrogen uranyl phosphate tetrahydrate [9][10][11][12]. The principle is based on the Nernst expression:…”

Section: Hads ! Habsmentioning

confidence: 99%

Corrosion monitoring of hydrogen by HUP probe in the presence of sulphide and thiourea

Abbassi

Mihi

Benbouta

2010

Materials & Corrosion

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The effect of sulphide and thiourea on hydrogen uptake during the corrosion of steel in deaerated pH3 has been studied using an electrochemical hydrogen probe incorporating a solid electrolyte (HUP) and lead dioxide (PbO 2 ) as a reference electrode. This probe has been used for the quantitative determination of the hydrogen activity generated during the corrosion of steel. The sensor voltage implies an average equivalent hydrogen pressure in uncharged steel of 2 Â 10 À18 atmospheres. During the corrosion of steel, this value increases by very large amounts; thus in deaerated pH3, the equivalent pressure rose by 10 24.5 in the presence of 200 ppm sulphide and by 10 2 in the presence of 100 ppm thiourea. Weight loss and AC impedance methods were also performed under the same conditions as the hydrogen measurements. The hydrogen probe data were correlated with AC impedance and weight loss results in order to understand the effect of S 2À and thiourea on hydrogen uptake.

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Section: Hads ! Habsmentioning

confidence: 99%

Corrosion monitoring of hydrogen by HUP probe in the presence of sulphide and thiourea

Abbassi

Mihi

Benbouta

2010

Materials & Corrosion

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Nutrient Detection Sensors in Seawater Based on ISI Web of Science Database

Cao

Xiang

et al. 2022

Journal of Sensors

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Marine ecosystem is increasingly deteriorating. In order to assess anthropogenic influence and instigate appropriate remedial actions, it is still of great significance to develop the technology of sensors applied for nutrient detection (e.g., nitrate, phosphate, and silicate) in seawater. This brief review shows an important direction for the development of nutrient detection sensors in seawater and also the limitations and challenges based on data from the ISI Web of Science database. Being different from previous review papers, in this short critical review paper (1) we unified the unit of limit of detection (LOD) for making the comparison within different researches possible; (2) only the literatures focusing on the technological development of sensors in seawater were used; and (3) not only the detection methods but also the detected analytes and publication years were discussed to supply more valuable information for the development of nutrient sensors applied in seawater. In total, 109 literatures were collected with regard to technological development. The quantity of literatures has increased most during 2011-2020. For analytes, literatures related to nitrate, phosphate, ammonium, and phosphate will continue to increase with more accurate data. For detection methods, spectrophotometry, colorimetry, fluorimetry, and electrochemistry are the most widely used sensors. LODs show thousands of orders. In general, there are lower LOD to nitrite and ammonium and fluorimetry method. Now, for analytes, nitrate 1.0983 > silicate 0.5495 > phosphate 0.4823 > ammonium 0.1324 > nitrite 0.0568 . For detection methods, microfluidics 1.7617 > electrochemistry 1.2607 > colorimetry 0.4462 > spectrophotometry 0.2941 > fluorimetry 0.0558 . This result indicated that the development level of detection methods is closer for nitrate, nitrite, phosphate, and silicate. For ammonium, spectrophotometry has significantly lower LOD than electrochemistry ( p < 0.05 ), and fluorimetry also has significantly lower LOD than electrochemistry ( p < 0.05 ). Our results imply that sensors with accurate LOD should be developed in the future. In addition, more detection methods should be considered by future sensors.

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Monitoring of hydrogen generated by corrosion reactions of steel

Cited by 2 publications

References 10 publications

Corrosion monitoring of hydrogen by HUP probe in the presence of sulphide and thiourea

Corrosion monitoring of hydrogen by HUP probe in the presence of sulphide and thiourea

Nutrient Detection Sensors in Seawater Based on ISI Web of Science Database

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