id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-300739-ll1kc7sn	Kerimray, Aiymgul	Assessing air quality changes in large cities during COVID-19 lockdowns: The impacts of traffic-free urban conditions in Almaty, Kazakhstan	2020-05-04		.txt	text/plain	3361	157	61	title: Assessing air quality changes in large cities during COVID-19 lockdowns: The impacts of traffic-free urban conditions in Almaty, Kazakhstan The results demonstrate the impact of traffic on the complex nature of air pollution in Almaty, which is substantially contributed by various nontraffic related sources, mainly coal-fired combined heat and power plants and household heating systems, as well as possible small irregular sources such as garbage burning and bathhouses. Benzene, toluene, ethylbenzene, and o-xylene (BTEX) concentrations were also measured during three days in the middle of the lockdown and compared with the concentrations observed during the same periods of previous years (2015) (2016) (2017) (2018) (2019) . There were substantial increases in benzene and toluene during the lockdown period compared to the average during the 2015-2019 years, while some reductions were observed in ethylbenzene and o-xylene concentrations.	./cache/cord-300739-ll1kc7sn.txt	./txt/cord-300739-ll1kc7sn.txt