摘要
本文通过特制的溢油风化模拟装置对船舶燃料油进行了风化实验,采用气-质联用仪(GC-MS)对风化样品中的多环芳烃进行了检测,通过谱图和特征分析,研究了船舶燃料油中主要多环芳烃的风化规律.结果表明:船舶燃料油中主要多环芳烃组分含量由高到低依次为萘类>菲类>二苯并噻吩类>芴类>■类,在每类同系物中,带支链的同系物含量基本上高于未带支链的多环芳烃母体;风化时间明显影响着船舶燃料油中多环芳烃组分的相对含量,在5组多环芳烃中,萘系列组分风化速度最快,其次为芴系列组分,菲、二苯并噻吩和■系列三组分不易风化;风化1周内,船舶燃料油中多环芳烃同分异构体C1D(m/z=198)和C1P(m/z=192)与特征参数比值C2D/C2P、C3D/C3、∑P/(∑D+∑P)基本保持稳定.风化2周内,多环芳烃同分异构体C1D(m/z=198)与C1P(m/z=192)中分布相对靠前的组分更易风化,特征参数比值C2D/C2P明显下降,C3D/C3P与∑P/(∑D+∑P)仍然保持稳定.
In this paper, ship fuel oil was weathered in 14 days through a specially designed weathering simulator. The weathered samples were detected by GC-MS. Then analyzed the spectrum to study the weathering law of the PAHs in ship fuel oil. Results demonstrated that： the contents of PAHs descend in the order of naphthalenes 〉 phenanthrenes 〉 dibenzothiophenes 〉 fluorenes 〉 chrysenes series, alkylated PAHs content higher than the mother PAHs. In five PAHs series, naphthalenes weathered fastest, followed by fluorens; DBTs, phenanthrenes and chrysenes weathered slowly on the other hand. The ratios of C2D/C2P, C3D/C3P, ∑P/（∑D ＋ ∑P） and the relative abundances of the isomers in C1D （m/z = 198） and C1P （m/z = 192） remained stable in one week; after two weeks＇ weathering, the isomers distributed in front were easier to weathering; the ratio of C2D/C2P decreased obviously, C3 D/C3P and ∑ P/（ ∑ D ＋ ∑ P）remained stable.
出处
《环境化学》
CAS
CSCD
北大核心
2009年第5期661-665,共5页
Environmental Chemistry
基金
国家908计划(908-02-02-03)基金资助项目
关键词
气相色谱-质谱联用
指纹鉴别
多环芳烃
风化模拟.
gas chromatography-mass spectrometry （GC-MS）, fingerprinting identification, polycycliea romatic hydrocarbons （ PAHs ） , weathering simulation.
