Speciation Analysis of Cr(VI) and Cr(III) in Water with Surface-Enhanced Raman Spectroscopy

Dvoynenko, Olga; Lo, Shih-Lin; Chen, Yi–Ju; Chen, Guan Wei; Tsai, Hsin-Mei; Wang, Yuh‐Lin; Wang, Juen-Kai

doi:10.1021/acsomega.0c05020

Cited by 41 publications

(13 citation statements)

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“…It has evolved to become a reliable and sensitive method for qualitative and quantitative analyses of various substances. We have used it to identify various Mycobacterium species [11], determine antibiotic susceptibility of certain bacteria [12, 13], and monitor environmental pollution [14] and food safety [15].…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial Susceptibility Test by Surface-enhanced Raman Scattering of Bacterial Metabolites directly from Positive Blood Cultures

Han

Wang

Cheng

et al. 2022

Preprint

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Effective management of sepsis requires timely administration of appropriate antibiotics; therefore, a reliable and rapid antimicrobial susceptibility test (AST) is crucial. To meet clinical needs, we developed a novel AST, referred to as SERS-AST, based on the surface-enhanced Raman Scattering (SERS) technology. In this study, we applied SERS-AST to eight most common pathogens causing bacteremia, including Staphylococcus aureus, Staphylococcus epidermidis, Enterococcus faecalis, E. faecium, Escherichia coli, Enterobacter cloacae, Klebsiella pneumoniae, and Acinetobacter baumannii. Seven different antibiotics were tested, including oxacillin, levofloxacin, vancomycin, ampicillin, cefotaxime, ceftazidime, levofloxacin, and imipenem. SERS-AST determines antibiotic susceptibility of bacteria directly from positive blood cultures based on variations in bacterial SERS signals derived from secreted purines and their derivatives. The whole process could be completed within 4 hours, and the agreement rates between SERS-AST and VITEK 2 results were 96% for Gram-positive bacteria and 97% for Gram-negative bacteria.

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Section: Introductionmentioning

confidence: 99%

Antimicrobial Susceptibility Test by Surface-enhanced Raman Scattering of Bacterial Metabolites directly from Positive Blood Cultures

Han

Wang

Cheng

et al. 2022

Preprint

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“…Although successful identi cation of bacteria by SERS has been reported (11)(12)(13), its clinical application remains challenging due to problems such as low reproducibility of SERS signals (14), low concentration of targeted bacteria in clinical samples, and inhibitory substances in samples (15). We have improved the manufacturing process of the SERS device and its sensitivity (16) and have used it to identify various Mycobacterium species (17), determine antibiotic susceptibility of certain bacteria (18, 19), and monitor environmental pollution (20) and food safety (21).…”

Section: Introductionmentioning

confidence: 99%

Rapid Antimicrobial Susceptibility Testing Directly from Blood culture Broth by Surface-enhanced Raman Scattering of Spectral Biomarkers

Han

Wang

Cheng

et al. 2022

Preprint

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Background As effective management of sepsis requires timely administration of appropriate antibiotics, a reliable and rapid antimicrobial susceptibility testing (AST) is crucial. To meet clinical needs, we developed a novel AST, referred to as SERS-AST, based on the surface-enhanced Raman Scattering (SERS) technology. SERS-AST determines antibiotic susceptibility of bacteria based on variations in bacterial SERS signals derived from secreted purines and their derivatives. Methods SERS-AST was applied to blood culture samples of patients with bacteremia. Eight common causative organisms, including Staphylococcus aureus, Staphylococcus epidermidis, Enterococcus faecalis, Enterococcus faecium, Escherichia coli, Enterobacter cloacae, Klebsiella pneumoniae, and Acinetobacter baumannii and seven most prescribed antibiotics, including oxacillin, levofloxacin, vancomycin, ampicillin, cefotaxime, ceftazidime, levofloxacin, and imipenem were tested. Receiver operating characteristic analysis was performed to obtain the optimal cutoff SERS signal value to determine the susceptibility of tested bacteria. The results of SERS-AST were compared with those of VITEK 2. Results A total of 164 bacterial isolates from blood samples were examined, and the agreement rates between SERS-AST and VITEK 2 results were 96% for Gram-positive bacteria and 97% for Gram-negative bacteria. Conclusions By directly assaying positive blood cultures without additional subcultures, SERS-AST can be completed within 4 hours with high accuracy. It can be an alternative AST method to provide critical information to clinicians for timely administration of appropriate antibiotics to treat patients with blood stream infections.

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“…AAS has been used for the speciation of As (III) and As(V) [18][19][20]. Other than these methods, recently, surface-enhanced Raman spectroscopy has been used to analyze the Cr(Vi) and Cr(III) ions in water [21].…”

Section: Introductionmentioning

confidence: 99%

A Short Review on Recent Advances of Hydrogel-Based Adsorbents for Heavy Metal Ions

Perumal

Atchudan

Edison

et al. 2021

Metals

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The growth of industry fulfills our necessity and promotes economic development. However, pollutants from such industries pollute water bodies which pose a high risk for living organisms. Thus, researchers have been urged to develop an efficient method to remove toxic heavy metal ions from water bodies. The adsorption method shows promising results for the removal of heavy metal ions and is easy to operate on a large scale, thus can be applied to practical applications. Numerous adsorbents were developed and reported, among them hydrogels, which attract great attention because of the reusability, ease of preparation, and handling. Hydrogels are generally prepared by the cross-linking of polymers that result in a three-dimensional structure, showing high porosity and high functionality. They are hydrophilic in nature because of the functional groups, and are non-toxic. Thus, this review provides various methods of hydrogel adsorbents preparation and summarizes recent progress in the use of hydrogel adsorbents for the removal of heavy metal ions. Further, the mechanism involved in the removal of heavy metal ions is briefly discussed. The most recent studies about the adsorption method for the treatment of heavy metal ions contaminated water are presented.

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Speciation Analysis of Cr(VI) and Cr(III) in Water with Surface-Enhanced Raman Spectroscopy

Cited by 41 publications

References 50 publications

Antimicrobial Susceptibility Test by Surface-enhanced Raman Scattering of Bacterial Metabolites directly from Positive Blood Cultures

Antimicrobial Susceptibility Test by Surface-enhanced Raman Scattering of Bacterial Metabolites directly from Positive Blood Cultures

Rapid Antimicrobial Susceptibility Testing Directly from Blood culture Broth by Surface-enhanced Raman Scattering of Spectral Biomarkers

A Short Review on Recent Advances of Hydrogel-Based Adsorbents for Heavy Metal Ions

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