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- W3099151994 endingPage "119162" @default.
- W3099151994 startingPage "119162" @default.
- W3099151994 abstract "Abstract In this study, we proposed a novel method for the determination of nanomolar dissolved sulfides, including H2S, HS−, and S2− (defined as S(–II)) in water by coupling the classical methylene blue (MB) method with surface-enhanced Raman spectroscopy (SERS) detection. Overall, the following analytical procedures were employed: i) precipitation of S(–II) as zinc sulfide, ii) centrifugation to collect zinc sulfide, iii) derivatization of S(–II) to MB by the reaction with N, N-dimethyl-p-phenylenediamine in the presence of FeCl3 under acidic conditions, and iv) SERS detection. Parameters affecting the derivatization and SERS detection were optimized. Under the optimized conditions, a linear range of 12.3 nmol/L–200 nmol/L for S(–II) was obtained with a correlation coefficient (R2) of 0.99. Limits of detection and quantification of the developed method were estimated to be 3.7 nmol/L and 12.3 nmol/L, respectively. In addition, the proposed method demonstrated excellent tolerance to coexisting substances, such as NO2−, NO3−, SO32−, and other common ions. The proposed method demonstrates immense promise for the determination of nanomolar S(–II) in surface waters and wastewater." @default.
- W3099151994 created "2020-11-23" @default.
- W3099151994 creator A5004072845 @default.
- W3099151994 creator A5071458554 @default.
- W3099151994 creator A5091857560 @default.
- W3099151994 date "2021-03-01" @default.
- W3099151994 modified "2023-09-24" @default.
- W3099151994 title "Determination of nanomolar dissolved sulfides in water by coupling the classical methylene blue method with surface-enhanced Raman scattering detection" @default.
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- W3099151994 doi "https://doi.org/10.1016/j.saa.2020.119162" @default.
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