| 地表水超痕量苯并(a)芘的检测及空白干扰消除 |
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| 引用本文： | 罗烨. 地表水超痕量苯并(a)芘的检测及空白干扰消除[J]. 环境监控与预警, 2017, 9(3): 41-43. DOI: 10.3969/j.issn.1674-6732.2017.03.009 |
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| 作者姓名： | 罗烨 |
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| 作者单位： | 遵义市环境保护监测中心站,贵州 遵义,563000 |
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| 摘 要： | 采用液液萃取-超高效液相色谱仪接荧光检测器测定地表水中超痕量的苯并(a)芘,并对方法空白的干扰因素进行探讨。研究发现,该法的空白干扰主要来自于溶剂二氯甲烷,溶剂经蒸馏提纯后可消除干扰。以重新蒸馏提纯的二氯甲烷为提取剂,方法的检测限为0.05 ng/L,加标回收率为87.4%~132%,且空白测定值低于方法检出限,可满足地表水中超痕量苯并(a)芘检测的需求。
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| 关 键 词： | 苯并(a)芘 超高效液相色谱 空白干扰 超痕量 |
| 收稿时间： | 2017-01-14 |
| 修稿时间： | 2017-02-15 |
Determination of Ultra trace Benzo(a)pyrene in Surface Water and Elimination of Blank Interference |
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| LUO Ye. Determination of Ultra trace Benzo(a)pyrene in Surface Water and Elimination of Blank Interference[J]. Environmental Monitoring and Forewarning, 2017, 9(3): 41-43. DOI: 10.3969/j.issn.1674-6732.2017.03.009 |
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| Authors: | LUO Ye |
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| Affiliation: | Environmental Protection Monitoring Centeral Station of Zunyi ,Zunyi, Guizhou 563000, China |
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| Abstract: | This research adopts the liquid-liquid extraction /ultra high performance liquid chromatography coupled with fluorescence detector for the determination of ultra-trace benzo(a)pyrene in surface water.And the interference factors of blank are discussed.The research shows that dichloromethane containing a small amount of benzo(a)pyren is the main factor leading to blank interference,and solvent redistillation can remove interference.By using the purified dichloromethane, the detection limit is 0.05 ng/L, and the recovery rate was 87.4%~132%.The blank value was lower than the detection limit.The method can be used for the quantitative detection of ultra trace amounts of benzo(a)pyrene in water. |
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| Keywords: | Benzo(a)pyrene UHPLC Blank interference Ultra trace |
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