title: Surface-enhanced Raman spectroscopy detection of polybrominated diphenylethers using a portable Raman spectrometer.
abstract: Polybrominated diphenylethers (PBDEs), one of the most common brominated flame retardants, are toxic and persistent, generally detected by the chromatographic method. In this work, qualitative and quantitative detection of PBDEs were explored based on surface-enhanced Raman spectroscopy (SERS) technique using a portable Raman spectrometer. Alkanethiol modified silver nanoparticle aggregates were used as the substrate and PBDEs could be pre-concentrated close to the substrate surface through their hydrophobic interactions with alkanethiol. The effect of alkanethiols with different chain length on the SERS detection of PBDEs was evaluated. It was shown that 1-hexanethiol (HT) modified substrate has higher sensitivity, good stability and reusability. Qualitative and quantitative SERS detection of PBDEs in real sea water was accomplished, with the measured detection limits at 1.2×10(2) μg L(-1). These results illustrate SERS could be used as an effective method for the detection of PBDEs.
authors.affiliation: Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Department of Chemistry, Shandong University, Jinan 250100, China.
authors.forename: Xiaohong
authors.initials: X
authors.lastname: Jiang
authors.forename: Yongchao
authors.initials: Y
authors.lastname: Lai
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.forename: Wei
authors.initials: W
authors.lastname: Jiang
authors.forename: Jinhua
authors.initials: J
authors.lastname: Zhan
mesh_terms: D005233:Fatty Alcohols / Q000737:chemistry; D055768:Halogenated Diphenyl Ethers / Q000302:isolation & purification*; D057927:Hydrophobic and Hydrophilic Interactions; D057230:Limit of Detection; D053768:Metal Nanoparticles / Q000737:chemistry; D012623:Seawater / Q000737:chemistry*; D012834:Silver / Q000737:chemistry; D013059:Spectrum Analysis, Raman / Q000295:instrumentation / Q000379:methods*; D013499:Surface Properties; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*
chemical_list: D005233:Fatty Alcohols; D055768:Halogenated Diphenyl Ethers; D014874:Water Pollutants, Chemical; D012834:Silver; C400265:1,2,6-hexanetriol
keywords: Detection; Polybrominated diphenylethers; Real sea water; Surface-enhanced Raman spectroscopy