title: A method for determining pyrene in mucus using synchronous fluorimetry with multiple standard additions.
abstract: A new method was proposed to determine pyrene in mucus, which combined the synchronous fluorimetry with the multiple standard addition method (SFMSA). The method was used to determine pyrene in mucus directly without pretreatment. The method detection limit (MDL) for pyrene in mucus was measured as 0.47 ng/ml with a relative standard deviation of 12.7% (n = 7). The standard addition graph was linear in the range 0.05-50.00 ng/ml (r(2) = 0.9989). SFMSA was validated using a GC/MS method as a reference method, and nice agreement was found. The pyrene in mucus can be directly monitored by SFMSA without solvent extraction of samples. This indicates that SFMSA is more timesaving, less laborious and cheaper than the GC/MS method with solvent extraction. SFMSA has lower MDL and higher average recovery than the GC/MS method.
authors.affiliation: College of Environmental Sciences & MOE Laboratory for Earth Surface Process, Peking University, Hai-Dian, Beijing 100871, PR China.
authors.forename: Yanjiao
authors.initials: Y
authors.lastname: Xie
authors.forename: Ying
authors.initials: Y
authors.lastname: Zhu
authors.forename: Fu-Liu
authors.initials: FL
authors.lastname: Xu
authors.forename: Xianli
authors.initials: X
authors.lastname: Liu
authors.forename: Bei
authors.initials: B
authors.lastname: Xue
authors.forename: Shu
authors.initials: S
authors.lastname: Tao
mesh_terms: D000818:Animals; D002347:Carps / Q000378:metabolism; D005470:Fluorometry / Q000379:methods*; D008401:Gas Chromatography-Mass Spectrometry; D009093:Mucus / Q000737:chemistry*; D011721:Pyrenes / Q000032:analysis / Q000737:chemistry* / Q000592:standards; D015203:Reproducibility of Results
chemical_list: D011721:Pyrenes; C030984:pyrene