title: A simple method for the determination of benzoic acid based on room temperature phosphorescence of 1-bromopyrene/γ-cyclodextrin complex in water.
abstract: The addition of benzoic acid (BA) to an aqueous solution of 1-bromopyrene (1-BrPy) and γ-cyclodextrin (γ-CD) was found to form a ternary 1-BrPy/γ-CD/BA inclusion complex that exhibited strong and stable room temperature phosphorescence (RTP) without deoxygenation. The effects of several different factors on the RTP emission from the inclusion complex were subsequently investigated. A good linear relationship between the RTP intensity and the concentration of BA over the range of 0-0.70mM was identified (R2=0.9917), and the detection limit was determined to be 0.68µm. Application of the new method was successfully proved for the detection of BA in various beverages with satisfactory results.
authors.affiliation: College of Chemistry and Chemical Engineering, Key Laboratory of Fine Chemicals of College of Heilongjiang Province, Qiqihar University, Qiqihar 161006, China.
authors.forename: Jinping
authors.initials: J
authors.lastname: Wang
authors.affiliation: College of Chemistry and Chemical Engineering, Key Laboratory of Fine Chemicals of College of Heilongjiang Province, Qiqihar University, Qiqihar 161006, China. Electronic address: xfguo@163.com.
authors.forename: Xiangfeng
authors.initials: X
authors.lastname: Guo
authors.affiliation: College of Chemistry and Chemical Engineering, Key Laboratory of Fine Chemicals of College of Heilongjiang Province, Qiqihar University, Qiqihar 161006, China. Electronic address: jlh29@163.com.
authors.forename: Lihua
authors.initials: L
authors.lastname: Jia
mesh_terms: D019817:Benzoic Acid / Q000032:analysis* / Q000737:chemistry; D001628:Beverages / Q000032:analysis; D008163:Luminescent Measurements / Q000379:methods*; D011721:Pyrenes / Q000737:chemistry*; D015203:Reproducibility of Results; D013696:Temperature; D047408:gamma-Cyclodextrins / Q000737:chemistry*
chemical_list: D011721:Pyrenes; D047408:gamma-Cyclodextrins; C056303:1-bromopyrene; D019817:Benzoic Acid; C023792:gamma-cyclodextrin
keywords: 1-Bromopyrene; Benzoic acid; Room temperature phosphorescence