Monitoring Study of the Effect of Atyrau Evaporation Fields on the Content of Hydrogen Sulfide in the Air

Abstract

In this article, a monitoring study was conducted on the content of hydrogen sulfide in the air of the city of Atyrau, the exceeded content of which is associated with reclamation work in the evaporation fields, where industrial wastewater from the Atyrau oil refinery and household water from all over the city have been drained for decades. Monitoring was carried out for the period from September 2021 to June 2022 on 15 observation points recorded by the Republican State Enterprise "Kazhydromet" through the mobile application “Air Kz". The measurements were carried out by the GANK-4AR gas analyzer. The data were analyzed taking into account the maximum permissible concentrations, the repeatability of concentrations of impurities in the atmosphere, the standard index, taking into account the average sample values of hydrogen sulfide content at 10 points out of 15, where increased hydrogen sulfide content was noted. Of the remaining these 10 points, the highest value was noted in the Drag and drop AOR (Atyrau Oil Refinery) point, the hydrogen sulfide content in which, according to the average maximum values, exceeded more than 36.5 MPC (maximum permissible concentration). In general, by month, we note that high values for the average values of the maximum hydrogen sulfide indicators were noted in September, April and June months. Especially strong increase is characterized during warm periods in industrial areas and residential areas as NCOC No. 109 (Vostok), NCOC No. 110 (Privokzalny), NCOC No. 112 (Akimat), NCOC No. 111 (Zhilgorodok), NCOC No. 113 (Avangard) and NCOC No. 114 (Zagorodnaya) points.

Environmental Assessment of the Impact of Atmospheric Air Pollution with Hydrogen Sulfide on the Health of the Population of Atyrau, Republic of Kazakhstan

“…The studies were conducted for the period from July 2021 to June 2022 according to 15 points of observation of the state of atmospheric air in the city of Atyrau and statistical data on morbidity, first identified in medical oranizations and on the number of people who died from various types of diseases in the city of Atyrau. Data on the content of hydrogen sulfide in the air of Atyrau were taken from observation points, which are recorded in the AirKz application, the Kazhydromet website (www.kazhydromet.kz), as well as on the basis of previous studies by the authors [3,6,12]. Data on the morbidity of the population of Atyrau for the periods from 2020 to 2022 were also studied, data from the website of the Bureau of National Statistics of the Agency for Strategic Planning and Reforms of the Republic of Kazakhstan (www.stat.gov.kz) were taken from them [14].…”

“…The studied territory is the city of Atyrau, where observations were made on the intake of hydrogen sulfide into the air environment. Observations of the state of atmospheric air in the territory of Atyrau are carried out at 15 observation posts, including 2 manual sampling posts and 3 automatic stations [3].…”