Determination of atmospheric nitrobenzanthrones by high-performance liquid chromatography with chemiluminescence detection

被引:31
作者
Tang, N
Taga, R
Hattori, T
Tamura, K
Toroba, A
Kizu, R
Hayakawa, K
机构
[1] Kanazawa Univ, Grad Sch Nat Sci & Technol, Kanazawa, Ishikawa 9200934, Japan
[2] Kanazawa Univ, Fac Pharmaceut Sci, Kanazawa, Ishikawa 9200934, Japan
[3] Natl Inst Environm Studies, Tsukuba, Ibaraki 3058506, Japan
关键词
D O I
10.2116/analsci.20.119
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A method using high-performance liquid chromatography with chemiluminescence detection was developed for analyzing mutagenic nitrobenzanthrone (NBA) isomers in airborne particulates. The method was a modification of our previously described method for analyzing nitropolycyclic aromatic hydrocarbons (NPAHs). The pretreatment and reducing conditions for 1-, 2-, 3- and 10-NBAs were the same as those for NPAHs. In order to separate these NBA isomers, we used a polymeric-type ODS column (Cosmosil 5C-18MS); a mixture of 40% acetonitrile and 60% 10 mM imidazole-HClO4 buffer was employed as the mobile phase at a flow rate of 1 mL/min. The isomers of 1-, 2-, 3- and 10-NBA were determined in chemiluminescence with linear calibration graphs from 0.1 to 4 pmol, from 200 to 4000 pmol, from 1 to 50 pmol and from 10 to 400 pmol, respectively. The detection limits (S/N = 3) of 1-, 2-, 3- and 10-NBA isomers were 0.02 pmol, 35 pmol, 0.3 pmol and 3 pmol, respectively. The method was used to analyze airborne particulates at a heavy traffic site in Kanazawa. 2- and 3-NBAs were detected in the extracts of the particulates, while 1-NBA and 10-NBA were not detected. The atmospheric concentrations of 2- and 3-NBAs were 1.83 pmol/m(3) and 24.7 fmol/m(3), respectively.
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页码:119 / 123
页数:5
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