A reflection on collaborative adaptation research in Africa and Asia

Regional Environmental Change - The reality of global climate change demands novel approaches to science that are reflective of the scales at which changes are likely to occur, and of the new forms...     

Climate change impacts in Central Asia and their implications for development

Regional Environmental Change - This paper synthesizes what is known about the physical and biophysical impacts of climate change and their consequences for societies and development under...     

我国排污权交易制度运行进展、挑战与对策研究

进一步调动市场的积极性、充分发挥市场机制在治污减排中的杠杆调节作用是“十四五”时期生态环境保护制度建设的重点。当前,我国排污权交易市场仍存在活跃性、稳定性较低、激励不足等问题。本文对我国排污权交易制度建立的历史进程进行了梳理,采用文本分析和文献计量的方法分析了我国排污权交易制度的实践和研究现状。在此基础上,进一步识别了我国排污权交易面临的问题与挑战,并提出改进排污权交易制度的思路与建议,包括建立统一市场、信息公开等。     

Cumulative risk assessment of dietary exposure to phthalates in pregnant women in Beijing,China

Diet is an important exposure route for phthalates, such as di-iso-butyl phthalate (DiBP), dibutyl phthalate (DBP), bis(2-ethylhexyl) phthalate (DEHP), and benzyl butyl phthalate (BBP). In this study, we aimed to estimate phthalate exposure in the diet of pregnant women and assess the health risk. A total of 517 pregnant women in the first trimester were recruited, and food frequency questionnaires were collected. A simple distribution assessment method was used to estimate daily exposure, and the hazard index (HI) method was used to assess cumulative risk. The maximum daily dietary exposure to DEHP, DBP, DiBP, and BBP was 5.25, 3.17, 2.59, and 0.58 μg/kg bw/day, respectively, and did not exceed the safety limit values. Cereals and vegetables were the main sources of the estimated daily intake (EDI) of phthalates in the diet. The cumulative risk assessment, based on the European Food Safety Authority tolerable daily intake (TDI) and the US Environmental Protection Agency reference dose (RfD), did not exceed the threshold of 1. DiBP, DBP, and DEHP had higher hazard quotient (HQ) values for cumulative health risk than BBP. In conclusion, a low health risk was posed by the cumulative dietary exposure to phthalates for pregnant women in Beijing.

Graphical abstract