Volatile organic compounds (VOCs) are a group of aromatic or chlorinated organic
chemicals commonly found in manufactured products that have high vapor pressure, and …

Asphaltene is deposited in all of the petroleum production systems. Normally, wellbore
soaking by xylene with bullheading or coiled tubing is conducted to remove these plugs from …

Using a passive sampler, the results of the analyses of water soluble ions (Na+, Cl−, K+, NH
4+, NO 3−, SO 4 2−, Ca 2+ and Mg 2+) in Abali, Firouzkouh and Varamin stations were …

A total of 43 rainwater samples were collected from March 2014 to February 2015 at a
regional atmospheric background station, in Lin'an, Zhejiang province, eastern China. We …

Air pollution is defined as:“the contamination of air by unwanted gases, smoke, particles,
and other substances.” 1 In recent decades, in many large and crowded cities of developing …

Aromatic hydrocarbons such as benzene, toluene, ethylbenzene, and xylene isomers
(BTEX) are hazardous air pollutants from industrial processes which have raised many …

Xylene sited in the Volatile Organic Compounds (VOC's), is considered as one of the toxic
chemicals released to environment during oil and gas operations in order to remove the …

To determine the impact of volatile organic compounds (VOCs) on ozone formation, their
identification as well as air concentration assessment is necessary. These were one of the …

Polycyclic aromatic hydrocarbons (PAHs) contain a large group of chemical compounds that
have two or more aromatic rings in their structure. These materials are produced from the …

Due to urban extension, air pollution is continuously getting to be a vital issue in present day
social orders, particularly in metropolitan zones. Owing to the tremendous characteristic gas …