Two-dimensional gas chromatography coupled to isotope ratio mass spectrometry for determining high molecular weight polycyclic aromatic hydrocarbons in sediments
文献类型：期刊论文
| 作者 | Tian, Boyang1,3; Gao, Shutao2,3 ; Zhu, Zhanjun1,3; Zeng, Xiangying2,3; Liang, Yi2,3; Yu, Zhiqiang2,3; Peng, Ping'an2,3
|
| 刊名 | JOURNAL OF CHROMATOGRAPHY A
 |
| 出版日期 | 2023 |
| 卷号 | 1693页码:463879 |
| 关键词 | SOURCE APPORTIONMENT RIVER ESTUARY PAHS IDENTIFICATION DELTA-C-13 PATHWAYS BAY |
| ISSN号 | 0021-9673 |
| DOI | 10.1016/j.chroma.2023.463879 |
| 英文摘要 | The accuracy of compound-specific isotope analysis (CSIA) of trace-level pollutants in complex environmental samples has always been limited by two main challenges: poor chromatographic separation and insufficient amounts of analytes. In this study, a two-dimensional gas chromatography-isotope ratio mass spectrometry (2DGC-IRMS) system was constructed for compound-specific δ13C analysis of high molecular weight polycyclic aromatic hydrocarbons (HMW-PAHs) in estuarine/marine sediments. This construction occurred through hyphenating an extra gas chromatography system (GC) to a conventional GC-IRMS using a commercially available multi-column switching-cryogenic trapping system (MCS-CTS). Compared with the previous 2DGC-IRMS strategy, which utilizes a Deans Switch device, the newly implemented 2DGC-IRMS scheme resulted in online purification of target analytes as well as enriched them online via duplicate injection and cryogenic trapping in CTS; this resultingly lowered the limits of detection (LOD) of CSIA. To improve the sample transfer efficiency to the IRMS, a broader-bore and longer fused-silica capillary was utilized to replace the original sample capillary running from the sample open split to the IRMS. A ?13C analysis of PAH standards showed accurate ?13C values, and high precisions (standard deviations 0.13–0.37%) were achieved, with the LOD of HMW-PAHs reduced to at least 1.0 mg/L (i.e., 0.07 to 0.09 nmol carbon per compound on-column). The successful application of this newly developed 2DGC-IRMS scheme provides a practical solution for the reliable CSIA of trace-level pollutants in complex environmental samples that cannot be measured using the conventional GC-IRMS system. ? 2023 Elsevier B.V. |
| WOS研究方向 | Biochemical Research Methods ; Chemistry, Analytical |
| 语种 | 英语 |
| WOS记录号 | WOS:000946538900001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/80323]  |
| 专题 | 有机地球化学国家重点实验室 |
| 作者单位 | 1.University of Chinese Academy of Sciences, Beijing; 100049, China 2.CAS Center for Excellence in Deep Earth Science, Guangzhou; 510640, China 3.State Key Laboratory of Organic Geochemistry, Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou; 510640, China |
| 推荐引用方式 GB/T 7714 | Tian, Boyang,Gao, Shutao,Zhu, Zhanjun,et al. Two-dimensional gas chromatography coupled to isotope ratio mass spectrometry for determining high molecular weight polycyclic aromatic hydrocarbons in sediments[J]. JOURNAL OF CHROMATOGRAPHY A,2023,1693:463879. |
| APA | Tian, Boyang.,Gao, Shutao.,Zhu, Zhanjun.,Zeng, Xiangying.,Liang, Yi.,...&Peng, Ping'an.(2023).Two-dimensional gas chromatography coupled to isotope ratio mass spectrometry for determining high molecular weight polycyclic aromatic hydrocarbons in sediments.JOURNAL OF CHROMATOGRAPHY A,1693,463879. |
| MLA | Tian, Boyang,et al."Two-dimensional gas chromatography coupled to isotope ratio mass spectrometry for determining high molecular weight polycyclic aromatic hydrocarbons in sediments".JOURNAL OF CHROMATOGRAPHY A 1693(2023):463879. |
入库方式： OAI收割
来源：广州地球化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。