阿拉丁SCI论文搜索工具

Journal of Applied Spectroscopy · 2017 ·Vol. 84 ·期 5 ·900-905 · IF 0.572

Determination of Cerium (IV) Using Rhodamine 6G Fluorescence Quenching

Zhao Zh.,Sheng L.,Su B.,Tao C.,Jing W.

The interaction between rhodamine 6G (Rh6G) and cerium sulfate was studied by the fluorescence quenching method. In a sulfuric acid medium, the interaction of Ce(IV) with Rh6G results in Rh6G fluorescence quenching. The maximum excitation wavelength (λ ex ) and the maximum emission wavelength (λ em ) are 530 nm and 555 nm, respectively. A good linearity between the relative fl uorescence intensity (ΔF) and Ce(IV) was observed in the range ~0.12–1.08 μg/mL. The detection limit was 1.4 × 10 –3 μg/mL. The optimum reaction conditions, influencing factors, and effect of coexisting substances were investigated in the experiment. We found that the concentration of Rh6G was 3.2 × 10 –6 mol/L, and the fl uorescence intensity was maximum.

研究领域: 分析化学 · 环境科学

✓ 已验证 DOI 高影响因子

查看原文查看 PubMed

Analytical Methods · 2012 ·Vol. 5 ·期 4 ·982-986 · IF 1.547

A novel method of chemiluminescence detection coupled with high-performance liquid chromatography and its application in direct determination of tartaric, malic and citric acids in fruit juice

Mao Deng,Fu-nan Chen,Xing-yu Long

In the present work, a new method of chemiluminescence detection coupled with high performance liquid chromatography for three organic acids—tartaric, malic and citric acids is described. The detection is based on the enhancement of the organic acids for the chemiluminescence reaction between cerous sulfate (Ce(SO4)2) and tris (2,2′-bipyridyl)ruthenium(II) (Ru(bipy)32+). The latter was immobilized on the cationic ion-exchange resin for obtaining high sensitivity and reducing consumption of expensive reagent. Under the optimal conditions, the linear ranges were 7.5 × 10−7 g mL−1 to 7 × 10−6 g mL−1 for tartaric acid, 4.0 × 10−7 g mL−1 to 1.0 × 10−5 g mL−1 for malic acid and 1 × 10−7 g mL−1 to 1.5 × 10−6 g mL−1 for citric acid, and the detection limits were 1.5 × 10−7 g mL−1, 2.0 × 10−7 g mL−1, 4.0 × 10−8 g mL−1 for tartaric, malic and citric acid, respectively. The proposed method had been successfully applied to the determination of three organic acids in fruit juice – with only filtration and dilution steps.

CAS / MDL: 77-92-9 5949-29-1 6915-15-7 87-69-4

研究领域: 分析化学 · 食品科学 · 色谱学

✓ 已验证产品关联 DOI 高影响因子

查看原文查看 PubMed

查找使用阿拉丁产品的科研文献

与阿拉丁产品相关的已发表科研成果

热门产品

Determination of Cerium (IV) Using Rhodamine 6G Fluorescence Quenching

A novel method of chemiluminescence detection coupled with high-performance liquid chromatography and its application in direct determination of tartaric, malic and citric acids in fruit juice