希腊雅典空气中的短链和中链多氯代烷烃

IF 8.1 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Chemosphere Pub Date : 2025-02-08 DOI:10.1016/j.chemosphere.2025.144162

Dimitra Balla , Danae Costopoulou , Ingus Perkons , Dikaia Saraga , Dzintars Zacs , Dimitra Voutsa , Leondios Leondiadis , Thomas Maggos

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引用次数: 0

摘要

在希腊雅典市的两次采样活动中，研究了短链（PCAs - c10 -13）和中链（PCAs - c14 -17）多氯代烷烃（PCAs）在大气中的存在及其气相和颗粒相之间的划分。在气相中，PCAs的浓度在1.46至43.6 ng m - 3之间，在颗粒相中，PCAs的浓度在5.8至40.3 ng m - 3之间，在欧洲报告的水平范围内。PCAs-C10-13和PCAs-C14-17在气相中存在显著的季节变化。C10Cl6-7和C14Cl6-8分别是主要的短链和中链同源物。气相pca与温度呈显著正相关，与相对湿度呈显著负相关。中短链PCAs的诊断率提示总悬浮颗粒（TSP）中ΣPCAs主要来源于局部来源。进一步研究了分配系数Kp与过冷液压力（PL°）之间的关系。此外，采用正矩阵分解（PMF）分析来识别潜在的ΣPCAs源组。最后，发现成人和儿童吸入接触ΣPCAs的估计风险很低。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Short- and medium-chain polychlorinated alkanes in the air of Athens, Greece

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Short- and medium-chain polychlorinated alkanes in the air of Athens, Greece

The atmospheric occurrence and partition between the gas and particulate phase of short- (PCAs–C_10-13) and medium-chain (PCAs–C_14-17) polychlorinated alkanes (PCAs) were investigated during two sampling campaigns in Athens city, Greece. The concentrations of PCAs ranged between 1.46 and 43.6 ng m⁻³ in the gas phase, and between 5.8 and 40.3 ng m⁻³ in the particulate phase, which were within the reported levels in Europe. Significant seasonal variation was observed for PCAs–C_10-13 and PCAs–C_14-17 in the gas phase. C₁₀Cl_6–7 and C₁₄Cl_6–8 were the predominant short- and medium-chain congeners, respectively. Gas-phase PCAs exhibited significant positive correlation with temperature, and negative correlation with relative humidity. Diagnostic ratios of medium to short-chain PCAs suggested that ΣPCAs in total suspended particle (TSP) mainly originated from local sources. Furthermore, the relationship between partitioning coefficient Kp and the subcooled liquid pressure (P_L°) was investigated. Moreover, Positive Matrix Factorization (PMF) analysis was employed to identify the potential ΣPCAs groups of sources. Finally, the estimated risk of inhalation exposure to ΣPCAs for adults and children was found to be low.

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来源期刊

Chemosphere 环境科学-环境科学

CiteScore

15.80

自引率

8.00%

发文量

4975

审稿时长

3.4 months

期刊介绍： Chemosphere, being an international multidisciplinary journal, is dedicated to publishing original communications and review articles on chemicals in the environment. The scope covers a wide range of topics, including the identification, quantification, behavior, fate, toxicology, treatment, and remediation of chemicals in the bio-, hydro-, litho-, and atmosphere, ensuring the broad dissemination of research in this field.