Pongpiachan Siwatt, Thumanu Kanjana, Chantharakhon Chulalak, Phoomalee Chunmanus, Charoenkalunyuta Teetat, Promdee Kittiphop, Poshyachinda Saran, Hashmi Muhammad Zaffar
NIDA Center for Research & Development of Disaster Prevention & Management, School of Social and Environmental Development, National Institute of Development Administration (NIDA), 148, Sereethai Road, Klong-Chan, Bangkapi, Bangkok, 10240, Thailand.
National Astronomical Research Institute of Thailand (Public Organization) 260 Moo 4, T. Donkaew, A. Maerim, Chiang-Mai, 50180, Thailand.
Heliyon. 2023 Aug 31;9(9):e19711. doi: 10.1016/j.heliyon.2023.e19711. eCollection 2023 Sep.
Anthropogenic activities, especially associated with fossil fuel combustion, are raising concerns worldwide, but remote areas with extreme climate conditions, such as Antarctica, are isolated from the adverse influence of human civilisation. Antarctica is considered as the most untouched place on Earth. Such pristine areas, which have extremely low chemical pollutant concentrations owing to restricted anthropogenic impacts, exemplify plausible model environments to test the reliability and sensitivity of advanced analytical techniques employed to chemically characterise and evaluate the spatial distribution of chemical pollutants. Here, synchrotron radiation-based attenuated total reflection-Fourier transform infrared (SR-ATR-FTIR) spectroscopy was employed to evaluate the variations in the organic functional groups (OFGs) of terrestrial soils of King George Island, Antarctica. Second-derivative SR-ATR-FTIR spectroscopy coupled with several multivariate statistical techniques highlighted the influence of anthropogenic activities on the alterations of OFGs in terrestrial soils collected near airports. Moreover, the daily activities of penguins could also have caused fluctuations in some OFGs of the samples the close to the Tombolo area and Ardley Island. The findings proved the effectiveness of SR-ATR-FTIR in evaluating the potential sources of variations in the chemical constituents, especially OFGs, in Antarctic terrestrial soils.
人为活动，尤其是与化石燃料燃烧相关的活动，正在引起全球关注，但像南极洲这样具有极端气候条件的偏远地区，却免受人类文明的不利影响。南极洲被认为是地球上最未受影响的地方。这些原始地区由于人为影响有限，化学污染物浓度极低，是测试用于化学表征和评估化学污染物空间分布的先进分析技术可靠性和灵敏度的理想模型环境。在此，基于同步辐射的衰减全反射傅里叶变换红外光谱（SR-ATR-FTIR）被用于评估南极洲乔治王岛陆地土壤中有机官能团（OFGs）的变化。二阶导数SR-ATR-FTIR光谱结合多种多元统计技术，突出了人为活动对机场附近采集的陆地土壤中OFGs变化的影响。此外，企鹅的日常活动也可能导致靠近连岛沙洲区域和阿德雷岛的样本中某些OFGs出现波动。研究结果证明了SR-ATR-FTIR在评估南极陆地土壤化学成分，尤其是OFGs变化潜在来源方面的有效性。
