Characteristics of organic compounds in aerosol particulate matter from Dhahran city, Saudi Arabia was written by Rushdi, Ahmed I.;El-Mubarak, Aarif H.;Lijotra, Luis;Al-Otaibi, Mubarak T.;Qurban, Mohammed A.;Al-Mutlaq, Khalid F.;Simoneit, Bernd R. T.. And the article was included in Arabian Journal of Chemistry in 2017.Computed Properties of C20H40O2 The following contents are mentioned in the article:
Organic chem. pollutants in atm. particulate matter (PM) have a potential toxicity hazard resulting in human responses that vary from no discernible effect to premature death. The formation and sources of PM also affect air quality of metropolitan areas as well as climate change. The new developments and industrial activities in the Middle East, especially Saudi Arabia, are expected to contribute to the natural, regional, and anthropogenic input sources of organic matter (OM). Here we report the occurrence, concentrations and sources of organic tracers, including n-alkanes, polycyclic aromatic hydrocarbons (PAHs), plasticizers, and petroleum biomarkers, in ambient atm. PM from the city of Dhahran, Saudi Arabia. The major compounds were unresolved complex mixtures (UCM) of branched and cyclic hydrocarbons (489 ± 296 ng m-3), plasticizers (131 ± 119 ng m-3 for Ph phosphates, 87 ± 42 ng m-3 for phthalates), n-alkanes (73 ± 53 ng m-3), hopane biomarkers (11 ± 8 ng m-3), n-alkanones (6.7 ± 6.3 ng m-3), PAHs (2.0 ± 2.1 ng m-3), n-alkanols (1.2 ± 1.2 ng m-3), sterane biomarkers (0.4 ± 0.3 ng m-3), and sterols (0.5 ± 0.4 ng m-3). Obviously, UCM and plasticizers were the major components (56 ± 9% and 26 ± 10% of the total extracts, resp.) in the PM of Dhahran, which might have adverse public health effects. The major sources of this OM are emissions from industrial factories north of the city, plastics and biomass burning, and petroleum product combustion (traffic/refining). This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Computed Properties of C20H40O2).
Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Computed Properties of C20H40O2
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics