Anna S. Makarova

We found mistakes in the article "Element content in human hair of residents from Simferopol city" published in the "Ekologiya cheloveka (Human Ecology)" journal (volume 29, issue 6, doi: https://doi.org/10.17816/humeco90984) by E.V. Evstafieva and co-authors. Table 1 incorrectly indicates references in the column "Comparison range limits". The authors team and the editorial board of the journal are sure that the mistakes could not significantly affect the perception and interpretation of the published work by readers, and should not become the reason for retraction. The publisher made changes to the electronic version of the published article and re-published it on the journal's website instead of the version with errors. The authors team and the editorial board apologize to the readers for the mistakes made.

BACKGROUND: Environmental pollution is increasingly becoming a problem and will continue to be a serious risk for human health. Therefore, it is important to monitor the element status of the population. AIM: To determine the elements in residents hairs of Simferopol city, Republic of Crimea. MATERIAL ANS METHODS: Twenty-eight elements were determined using the instrumental neutron activation method. The mercury content was estimated by atomic absorption spectrometry in 80 hair samples of healthy 1720-year-old Simferopol residents (34 males and 46 females). The concentration coefficients were calculated, and the geochemical rows were plotted based on comparison with the published data from other regions.. RESULTS: The median values of the hair element content were found to be within the reference ranges for 25 out of 29 chemical elements. Excess Br and Ba were found in most residents, which could be due to the geochemical conditions. Significant sex differences in the content of Na, Ca, and Sb could be associated with differences in diet, lifestyle, and other gender-associated factors. Comparison of the geochemical elemental rows for Simferopol residents with other territories of Crimea and Krasnodar suggests a greater intake of Co, Na, Fe, and As in urban residents (Crimea) compared to Krasnodar, and in comparison with other territories of a peninsula Hg, Ag, and Zn. CONCLUSION: Although most of the elements were within reference ranges in Simferopol residents, the anthropogenic load has increased recently, along with our previously established physiological effects of toxic metals, demonstrating the need for further biomonitoring studies.

При обращении с ртутьсодержащими отходами (РСО) применяются методы их удаления, направленные как на рециклинг ртути и её соединений из РСО, так и на её стабилизацию/иммобилизацию в РСО для последующего их удаления/захоронения. Эти методы удаления РСО можно реализовать с помощью технологий, основанных на термических, химических и физико-химических методах. Целью работы является обзор современного состояния развития технологий иммобилизации, относящихся к обезвреживанию ртутьсодержащих отходов. В последние десятилетия было разработано несколько подходов для стабилизации ртути и ртутьсодержащих отходов. Они могут быть сгруппированы в три группы: стабилизация в виде сульфида ртути или селенида ртути; стабилизация в виде амальгамы; стабилизация с помощью компонентов нерастворимой матрицы (цемент, фосфатная керамика, магнезиальное вяжущее). Все процессы, описанные в обзоре, основаны на одном или комбинации двух из этих подходов. В каждом случае элементарная ртуть и/или окисленные формы ртути вступают в реакцию с химическими агентами, которые переводят ртуть в менее растворимое и менее летучее химическое соединение. Обзор включает в себя технологии, имеющие уже практическое применение, а также находящиеся на стадии испытаний. Приведена технология, разработанная в Российском химико-технологическом университете им. Д. И. Менделеева, которая отличается тем, что все процессы протекают при комнатной температуре и без образования сточных...

A method is proposed and multifactorial experiments are carried out to determine the effectiveness of various compositions of chemical additives for intensifying the processes of phytoextraction of mercury and other heavy metals from soils. White creeping clover (lat. Trifolium repens L.) is used as the object of experiment. As a result of a systematic analysis of the results of experiments using the tools of multivariate visualization of large data arrays in the form of various diagrams (petal, line, bubble, and thermal), the following was established: the presence of a positive effect of monoethanolamine salt of thioacetic acid and sodium thiosulfate on phytoextraction of mercury; a pronounced positive effect of Trilon B on the phytoextraction of heavy metals, simultaneously accompanied by a destructive effect on the growth and development of plants; a positive effect on the condition of plants of phytohormone and iron chelate supplements; and the ability of oxyethylidene diphosphonic acid to protect plants from the negative effects of heavy metals.

Extraction of hazardous compounds by plants (phytoextraction) is considered a green technology for the remediation of soils and water bodies. Phytoextraction of mercury is very challenging due to the specific chemical/biochemical properties of this element and its low plant uptake. In this review, mechanisms and processes of enhancing phytoextraction of mercury are summarized. Plants that look promising for induced phytoextraction of mercury are described. Additives of various types that may significantly increase the efficiency of mercury phytoextraction are critically evaluated. Thiosulfates and other sulfur-containing compounds, aminopolycarboxylic acids, low-molecular-weight organic acids and enzymes are considered in detail. The important role of selective chemical inductors, primarily thiosulfates, is demonstrated. It is shown that synthetic aminopolycarboxylic acids have the potential for increasing bioavailability of mercury in soils and its translocation to above-ground organs of plants-phytoextractors. Non-chemical methods of inducing mercury phytoextraction are also addressed. Abbreviations: APCA: aminopolycarboxylic acid, BAF: bioaccumulation factor, BDL: below detection limit Cys: cysteine, DTPA: diethylenetriaminepentaacetic acid, DW: dry weight, EDDHA: ethylenediamine-N,N′-bis(2-hydroxyphenylacetic) acid, HEDTA: hydroxyethylethylenediaminetriacetic acid, IPEN: International Pollutants Elimination Network (https://ipen.org/), LMWOA: low-molecular-weight organic acid, MPC: below maximum permission concentration, ND: not detectable, NTA: nitrilotriacetic acid, PGPR: plant growth-promoting rhizobacteria, TF: translocation factor

A systematic analysis of the mercury content in various subsystems of the environment of the Crimean Peninsula has been carried out which includes (1) an assessment of the presence of natural geochemical and anthropogenic sources of mercury input into the subsystems of the Crimean environment, (2) an assessment of the load on the territory of the peninsula with mercury-containing waste according to the official data of the Ministry of Ecology and Natural Resources of the Republic of Crimea in the form of Forms 2-tp (waste), (3) an analysis and generalization of literature and our own monitoring data on the content of mercury in environmental components, and (4) the pursuance of monitoring research on the territory of cities on the peninsula using leaves of the black poplar Populus nigra L. as indicators of the accumulation of mercury. An analysis of the load of mercury caused by mercury-containing household waste in cities and administrative districts shows its increase by 25% from 2017 to 2018. The greatest load is observed in the cities of Simferopol, Kerch, and Sevastopol, in the Simferopol and Saki administrative districts. In the same territories, according to the literature data, over the past few years, a significant excess of mercury content has been noted in components such as sea water and the water of salt lakes; bottom sediments; soil; and, in industrial northern territories, in precipitation. At the same time, the total mercury content in soils near solid-waste landfills and conditionally background sites in agricultural, protected, and residential areas in 2018 did not exceed the maximum permissible concentrations, and our own data on the content of mercury in soil and plants in residential, urbanized, protected, and agricultural areas indicate a relatively favorable situation at present, but there are statistically significant differences and a higher mercury content in the southern coastal territories, which may be due to their natural characteristics. The need to take into account the mobility of mercury distribution in the environmental subsystems of the Republic of Crimea determines the need for further systemic studies, including a determination of mercury in biosubstrates of the population of the Crimean Peninsula, which is an important integral characteristic of its presence in the biosphere.