Determination and comparison of nitrated-polycyclic aromatic hydrocarbons measured in air and diesel particulate reference materials
Determination and comparison of nitrated-polycyclic aromatic hydrocarbons measured in air and diesel particulate reference materials
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DOI：
10.1016/s0045-6535(02)00667-7
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发表时间：
2003-02-01
期刊：
影响因子：
8.8
通讯作者：
Baker, JE
中科院分区：
文献类型：
--
作者：
Bamford, HA;Bezabeh, DZ;Baker, JE
美国国家标准与技术研究所发布了许多环境基质标准参考材料（SRM）用于测量多环芳烃;然而，只有一个SRM（柴油颗粒材料）发布了四种硝化多环芳烃（硝基PAH）的认证和参考值。本研究的目的是开发一种改进的分析方法，以量化28个一硝基和二硝基多环芳烃，包括许多异构体，在空气和柴油颗粒SRMs。两个空气颗粒物基质SRM，SRM 1649 a城市灰尘和SRM 1648城市颗粒物，细颗粒物，收集从巴尔的摩MD作为“临时参考材料”的有机污染物的测定，其特征在于硝基多环芳烃。三种空气颗粒物中硝基多环芳烃的浓度均在ng/g水平，最高浓度为2-硝基荧蒽（范围在246和340 ng/g之间）。对于三种柴油颗粒相关的SRM，SRM 1650 a柴油颗粒物，SRM 1975柴油颗粒提取物和SRM 2975柴油颗粒物（工业Fortlift），硝基多环芳烃的浓度在μ g/g范围内，1-硝基芘是主要的硝基多环芳烃（范围在18和40 μ g/g之间）。不同的硝基PAH异构体模式之间的空气和柴油机颗粒物。这些结果将提供异构体识别和参考浓度为大量的硝基多环芳烃在现有的柴油和空气颗粒SRMs。出版社：Elsevier Science Ltd
The National Institute of Standards and Technology has issued numerous environmental matrix standard reference materials (SRMs) for the measurement of polycyclic aromatic hydrocarbons; however, only one SRM (diesel particulate material) was issued with certified and reference values for four nitrated-polycyclic aromatic hydrocarbons (nitro-PAH). The objective of this study was to develop an improved analytical procedure to quantify 28 mononitro- and dinitro-PAHs, including numerous isomers, in air and diesel particulate SRMs. Two air particulate matrix SRMs, SRM 1649a Urban Dust and SRM 1648 Urban Particulate Matter, and fine particulate matter, collected from Baltimore MD for use as an "interim reference material" for the determination of organic contaminants, have been characterized for nitro-PAHs. Concentrations of nitro-PAHs in all three air particulate materials were at the ng/g level with the highest nitro-PAH concentration being 2-nitrofluoranthene (range between 246 and 340 ng/g). For the three diesel particulate-related SRMs, SRM 1650a Diesel Particulate Matter, SRM 1975 Diesel Particulate Extract, and SRM 2975 Diesel Particulate Matter (Industrial Fortlift), concentrations of nitro-PAHs were in the mug/g range, with 1-nitropyrene as the dominant nitro-PAH (range between 18 and 40 mug/g). Distinct nitro-PAH isomer patterns were present between the air and diesel particulate materials. These results will provide isomer identification and reference concentrations for a large number of nitro-PAHs in the existing diesel and air particulate SRMs. Published by Elsevier Science Ltd.