The research investigated temporal and spatial variants, distribution attributes, air pollution levels, and health risks involving heavy metals in Changshou Lake. The results indicated that all six heavy metals were below compared to Class Ⅰ standard regarding the Surface Water Environmental Quality Standard (GB 3838-2002), but recent years have actually experienced an ever-increasing trend, with Cu, As, and Pb showing a significant boost (P less then 0.05). The temporal and spatial distributions of the hefty metals had been different. Temporally, Cr and Cd levels in surface liquid had been higher during the summer, As and Zn were higher in springtime, and Pb and Cu had been higher in autumn and cold weather. Spatially, the levels of Cr, As, Cu, Zn, and Pb revealed greater concentrations when you look at the south socket regarding the reservoir, the nol and ecological quality improvement in Changshou Lake, and rational development and utilization of water resources.To explore the spatial and temporal circulation characteristics of heavy metals when you look at the surface sediments of ponds in cool areas during ice-sealing and non-ice-sealing durations, we analyzed the possibility ecological risk degree and the air pollution sources. A total of 20 sampling sites in Lake Ulansuhai in cool areas were gathered from 2020 to 2021, and 120 area sediment samples had been gathered during different times. The contents of like, Cd, Cr, Cu, Ni, Pb, Zn, and Hg were determined. Correlation analysis, principal component evaluation, while the absolute factor score-multiple linear regression (APCS-MLR) receptor design were utilized to track the origin of heavy metal pollution. The outcomes showed that① the distribution of heavy metals in lake area sediments ended up being various between your ice-sealing period together with non-ice-sealing duration. The distribution of hefty MKI-1 mouse metals throughout the ice-sealing period was higher within the north and reduced in the south. Cd and Hg were primarily distributed into the central and south ponds through the non-glacial duration. ② Hg, Cd, and As were reasonably NIR‐II biowindow polluted, and Ni ended up being averagely contaminated within the surface sediments of this lake. The overall performance is at a higher threat level, and also the air pollution amount during the non-ice-sealing period was higher than that throughout the ice-sealing period. The key environmental threat elements had been Hg and Cd, which revealed risky and moderate danger, correspondingly. ③ The sources of heavy metals in lake surface sediments had been primarily commercial sources from mining and transport, farming resources, and natural sources. As, Ni, Pb, and Hg had been genetic monitoring mainly affected by professional resources, with contribution rates of 62.67%, 75.31%, 77.47%, and 80.11%, respectively. The key sources of Cu and Zn were natural sources, and Cd had been significantly afflicted with farming resources. The share rate had been 81.57%. The source of Cr was primarily impacted by all-natural elements, while the impact of man activities and unknown sources require more attention.In this study, surface sediment samples had been collected from Dongting Lake, Honghu Lake, and Chihu Lake, while the concentrations of 10 hefty metals were calculated. Then, the possibility chance of heavy metal accumulation had been evaluated making use of the cumulative pollution index (Igeo), the enrichment factor (EF), therefore the potential ecological risk list (RI), plus the sources had been traced utilizing correlation analysis (Pearson) and principal element analysis (PCA). The outcomes revealed that the pollution and potential ecological risk of Cd had been more serious. The mean values of Cd in East Dongting Lake, Honghu Lake, and Chihu Lake had been 2.85, 1.59, and 3.57 mg·kg-1, respectively. The concentrations of Cd were 25.87, 11.36, and 37.58 times higher than the soil history values of this corresponding provinces, which exceeded the chance testing value (0.6 mg·kg-1). Specially, the Cd concentration of Chihu Lake exceeded the chance control value (3.0 mg·kg-1). Besides Cd, the concentration of like in Honghu Lake was also of issue. At exactly the same time, the Cu, As, Zn, and Pb in Chihu Lake shouldn’t be ignored. The potential environmental dangers for the three lakes were rated as followsChihu Lake (RI=1 127)>East Dongting Lake (RI=831)>Honghu Lake (RI=421). The primary types of heavy metals were industrial mining, agricultural production, and aquaculture, plus some hefty metals (Mn and Cu) had been from natural resources. This research had been of great value for the prevention and control of heavy metals when you look at the sediments of typical lakes when you look at the middle reaches associated with Yangtze River.This study investigated the concentrations of atmospheric toxins into the urban section of Suzhou from might to June, 2017-2021. The variation traits and annual modifications of ozone (O3), nitrogen oxide (NOx), complete oxidant (Ox), carbon monoxide (CO), and volatile organic compounds (VOCs) had been reviewed.