Ultraviolet absorbance titration for the determination of conditional stability constants of Hg(II) and dissolved organic matter.
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| Title: | Ultraviolet absorbance titration for the determination of conditional stability constants of Hg(II) and dissolved organic matter. |
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| Authors: | Bai Yingchen1,2, Wu Fengchang1 wufengchang@vip.skleg.cn, Wan Guojiang1, Liu Congqiang1, Fu Pingqing1, Li Wen1 |
| Source: | Chinese Journal of Geochemistry. 2008, Vol. 27 Issue 1, p46-52. 7p. 1 Chart, 4 Graphs. |
| Subjects: | Absorbance scale (Spectroscopy), Absorption spectra, Spectrophotometry, Volumetric analysis, Mercury (Element) |
| Abstract: | Strong interaction between natural dissolved organic matter (DOM) and Hg(II) may influence the transport, conversion, toxicity and bio-validity of mercury in the environment. In this paper ultraviolet (UV) absorbance titration was employed for the first time for the determination of the conditional stability constants of Hg(II) and (DOM). With increasing Hg(II) concentrations, the UV absorbance of fulvic acid, humic acid, and DOM in river increases progressively. By linear and non-linear model fitting, the conditional stability constants (lg K) of Hg(II) and DOM were worked out to be 3.54–4.93 and 3.64–4.85, respectively. The results are consistent with those acquired by the typical fluorescence quenching titration method, with the maximum relative error of lg K being 2.6% and the average relative error being 0.2%. The UV absorbance titration method has the advantages of rapid determination, simple performance, and it will probably become a new approach to studying interactions between DOM and trace metallic ions. [ABSTRACT FROM AUTHOR] |
| Copyright of Chinese Journal of Geochemistry is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 31815304 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Ultraviolet absorbance titration for the determination of conditional stability constants of Hg(II) and dissolved organic matter. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Bai+Yingchen%22">Bai Yingchen</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Wu+Fengchang%22">Wu Fengchang</searchLink><relatesTo>1</relatesTo><i> wufengchang@vip.skleg.cn</i><br /><searchLink fieldCode="AR" term="%22Wan+Guojiang%22">Wan Guojiang</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Liu+Congqiang%22">Liu Congqiang</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Fu+Pingqing%22">Fu Pingqing</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Li+Wen%22">Li Wen</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Chinese+Journal+of+Geochemistry%22">Chinese Journal of Geochemistry</searchLink>. 2008, Vol. 27 Issue 1, p46-52. 7p. 1 Chart, 4 Graphs. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Absorbance+scale+%28Spectroscopy%29%22">Absorbance scale (Spectroscopy)</searchLink><br /><searchLink fieldCode="DE" term="%22Absorption+spectra%22">Absorption spectra</searchLink><br /><searchLink fieldCode="DE" term="%22Spectrophotometry%22">Spectrophotometry</searchLink><br /><searchLink fieldCode="DE" term="%22Volumetric+analysis%22">Volumetric analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Mercury+%28Element%29%22">Mercury (Element)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Strong interaction between natural dissolved organic matter (DOM) and Hg(II) may influence the transport, conversion, toxicity and bio-validity of mercury in the environment. In this paper ultraviolet (UV) absorbance titration was employed for the first time for the determination of the conditional stability constants of Hg(II) and (DOM). With increasing Hg(II) concentrations, the UV absorbance of fulvic acid, humic acid, and DOM in river increases progressively. By linear and non-linear model fitting, the conditional stability constants (lg K) of Hg(II) and DOM were worked out to be 3.54–4.93 and 3.64–4.85, respectively. The results are consistent with those acquired by the typical fluorescence quenching titration method, with the maximum relative error of lg K being 2.6% and the average relative error being 0.2%. The UV absorbance titration method has the advantages of rapid determination, simple performance, and it will probably become a new approach to studying interactions between DOM and trace metallic ions. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Chinese Journal of Geochemistry is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s11631-008-0046-x Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 7 StartPage: 46 Subjects: – SubjectFull: Absorbance scale (Spectroscopy) Type: general – SubjectFull: Absorption spectra Type: general – SubjectFull: Spectrophotometry Type: general – SubjectFull: Volumetric analysis Type: general – SubjectFull: Mercury (Element) Type: general Titles: – TitleFull: Ultraviolet absorbance titration for the determination of conditional stability constants of Hg(II) and dissolved organic matter. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Bai Yingchen – PersonEntity: Name: NameFull: Wu Fengchang – PersonEntity: Name: NameFull: Wan Guojiang – PersonEntity: Name: NameFull: Liu Congqiang – PersonEntity: Name: NameFull: Fu Pingqing – PersonEntity: Name: NameFull: Li Wen IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 03 Text: 2008 Type: published Y: 2008 Identifiers: – Type: issn-print Value: 10009426 Numbering: – Type: volume Value: 27 – Type: issue Value: 1 Titles: – TitleFull: Chinese Journal of Geochemistry Type: main |
| ResultId | 1 |
