Convenient transportation facilities not only bring the higher standard of living to big cities, but also bring some environmental pollution problems. In order to understand the presence and sources of methylated polycyclic aromatic hydrocarbons (Me-PAHs) in environmental samples and their association with total organic carbon (TOC), 49 Me-PAHs were analyzed in road dust, green belt soil and parking lot dust samples in Harbin. The results showed that the ranges of the total Me-PAHs (ΣMe-PAHs) content in road dust were 221–5826 ng/g in autumn and 697–7302 ng/g in spring, and those in green belt soil were 170–2509 ng/g and 155–9215 ng/g in autumn and spring, respectively. And ΣMe-PAHs content in parking lot dust ranged from 269 to 2515 ng/g in surface parking lots and from 778 to 10,052 ng/g in underground parking lots. In these samples, the composition profile of Me-PAHs was dominated by 4-ring Me-PAHs. The results of diagnostic ratios and principal component analysis (PCA) indicated that petrogenic and pyrogenic sources were the main sources of Me-PAHs in the samples. Spearman correlation analysis showed that there was no correlation for Me-PAHs in road dust and green belt soil on the same road. Furthermore, there was a significant positive relationship (0.12 ≤ R² ≤ 0.67, P < 0.05) between Me-PAHs concentrations and the TOC content. This study demonstrated the presence of Me-PAHs with high concentrations in the road environment samples of Harbin.

便利的交通设施不仅给大城市带来了更高的生活水平，也带来了一些环境污染问题。为了了解环境样品中甲基化多环芳烃 (Me-PAHs) 的存在和来源及其与总有机碳 (TOC) 的关系，对道路灰尘、绿化带土壤和停车场灰尘样品中的 49 种 Me-PAHs 进行了分析在哈尔滨。结果表明，秋季道路灰尘中总甲基多环芳烃(ΣMe-PAHs)含量范围为221~5826 ng/g，春季为697~7302 ng/g，绿化带土壤中总甲基多环芳烃(ΣMe-PAHs)含量范围为170~2509 ng/g。秋季和春季分别为 ng/g 和 155–9215 ng/g。停车场粉尘中ΣMe-PAHs含量在地面停车场为269至2515纳克/克，在地下停车场为778至10,052纳克/克。在这些样品中，Me-PAH 的组成特征以 4 环 Me-PAH 为主。诊断比值和主成分分析（PCA）结果表明，石成源和热成源是样品中Me-PAHs的主要来源。 Spearman相关分析表明，同一道路上的道路灰尘和绿化带土壤中的Me-PAHs不存在相关性。此外，  Me-PAHs浓度与TOC含量之间存在显着的正相关关系（0.12≤R ²  ≤0.67，P <0.05）。本研究表明哈尔滨市道路环境样本中存在高浓度的Me-PAHs。