ScholarLens Back to search
2010•Journal of Analytical ScienceRequires access

Spectrophotometric Determination of Chromium(VI) in Environmental Sample with 2,3,7-Trihydroxy-9-(2-hydroxy)naphthyl Fluorone

Cheng Genwei

Open publisher page 0 citations

Abstract

In the presence of cationic surfactant cetyltrimethylammonium bromide(CTMAB),the color reaction and photophysical property of 2,3,7-trihydroxy-9-(2-hydroxy)naphthyl fluorone(2-HNF) with chromium(Ⅵ)have been studied.A complex with a chromium(Ⅵ)-to-2-HNF molar ratio of 1∶2is formed in buffer solution(pH=7.30of Na2HPO4-KH2PO4)within 30min.This red complexes is stable for at least 12hours.The maximum absorption wavelength is at 570nm and the apparent molar absorptivity of the complex is 1.07×105 L·mol-1·cm-1.In the range of 0～1.40μg/5mL,Beer’s law is obeyed.The proposed method has been applied to the determination of the trace chromium in environmental sample with satisfactory results.

About this research paper

What this paper is about

In the presence of cationic surfactant cetyltrimethylammonium bromide(CTMAB),the color reaction and photophysical property of 2,3,7-trihydroxy-9-(2-hydroxy)naphthyl fluorone(2-HNF) with chromium(Ⅵ)have been studied.A complex with a chromium(Ⅵ)-to-2-HNF molar ratio of 1∶2is formed in buffer solution(pH=7.30of Na2HPO4-KH2PO4)within 30min.This red complexes is stable for at least 12hours.The maximum absorption wavelength is at 570nm and the apparent molar absorptivity of the complex is 1.07×105 L·mol-1·cm-1.In the range of 0～1.40μg/5mL,Beer’s law is obeyed.The proposed method has been applied to the determination of the trace chromium in environmental sample with satisfactory results.

Why it matters

A significance statement is not available in the OpenAlex record.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

In the presence of cationic surfactant cetyltrimethylammonium bromide(CTMAB),the color reaction and photophysical property of 2,3,7-trihydroxy-9-(2-hydroxy)naphthyl fluorone(2-HNF) with chromium(Ⅵ)have been studied.A complex with a chromium(Ⅵ)-to-2-HNF molar ratio of 1∶2is formed in buffer solution(pH=7.30of Na2HPO4-KH2PO4)within 30min.This red complexes is stable for at least 12hours.The maximum absorption wavelength is at 570nm and the apparent molar absorptivity of the complex is 1.07×105 L·mol-1·cm-1.In the range of 0～1.40μg/5mL,Beer’s law is obeyed.The proposed method has been applied to the determination of the trace chromium in environmental sample with satisfactory results.

Key concepts: Chemistry, Molar absorptivity, Chromium, Spectrophotometry, Bromide, Cationic polymerization, Pulmonary surfactant, Color reaction

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
Spectrophotometric Determination of Chromium(VI) in Environmental Sample with 2,3,7-Trihydroxy-9-(2-hydroxy)naphthyl Fluorone — Research Paper | ScholarLens