Miao Xiongyi, Hao Yupei, Cai Jiawei, Xie Yincai, Zhang Jingru
School of Geography and Environmental Science & School of Karst Science, Guizhou Normal University, Guiyang, 550001, China; Key Laboratory of Karst Dynamics, MNR&GZAR, Institute of Karst Geology, CAGS, Guilin 541004, China.
Key Laboratory of Karst Dynamics, MNR&GZAR, Institute of Karst Geology, CAGS, Guilin 541004, China; Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming 650500, China.
Mar Pollut Bull. 2023 Mar;188:114666. doi: 10.1016/j.marpolbul.2023.114666. Epub 2023 Feb 2.
The accumulation of PAHs in sediments of Liujiang River Basin were investigated to disclose the sources, input processes and toxicity risk of PAHs in a typical karstic river. The results revealed the concentrations of ∑PAHs are ranging from 111.97 to 593.39 ng/g, most of which are centralized in upstream and midstream of Liujiang River. Positive Matrix Factorization identified PAHs are mainly from the mixed combustion of oil and coal, biomass combustion and oil products leaking. Redundancy analysis manifested mixed accumulation should be the main approach of PAHs that inputting sediment. The values of RQ and RQ suggested the moderate contamination of PAHs. The higher HQ and ILCR indicated the ingestion of PAHs are the main way to impact public health, while children should be more susceptible to PAHs. The values of HQ and ILCR indicated the overall low non-carcinogenic risk of PAHs, but relatively high carcinogenic risk of PAHs.
为揭示典型岩溶河流中多环芳烃（PAHs）的来源、输入过程及毒性风险，对柳江流域沉积物中PAHs的积累情况进行了调查。结果表明，∑PAHs浓度范围为111.97至593.39 ng/g，大部分集中在柳江的上游和中游。正定矩阵因子分解法确定PAHs主要来自石油和煤炭的混合燃烧、生物质燃烧以及石油产品泄漏。冗余分析表明混合积累应是PAHs输入沉积物的主要途径。RQ和RQ值表明PAHs存在中度污染。较高的HQ和ILCR表明摄入PAHs是影响公众健康的主要途径，而儿童对PAHs更敏感。HQ和ILCR值表明PAHs的总体非致癌风险较低，但致癌风险相对较高。
