Model of the assessment of the risk of conditions of the work with the use of pesticides: results and development

Rakitsky, V.N.; Bereznyak, Irina V.; Ilnitskaya, A. V.

doi:10.18821/0016-9900-2016-95-11-1041-1044

Cited by 2 publications

(1 citation statement)

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“…Риск здоровью оператора оценивается количественно, при воздействии определённого химического вещества в конкретных условиях применения, и в результате опыта может принимать различные, заранее неизвестные значения. В реальных условиях сельскохозяйственного производства механизм формирования экспозиционных уровней пестицидов в воздухе рабочей зоны и на коже работающих имеет в большинстве случаев хаотичный характер и зависит от множества факторов: физико-химических свойств препарата, многокомпонентности препаративной формы, направления и скорости ветра, герметичности тракторной кабины, технических особенностей опрыскивающих систем, температурно-влажностного режима, испарений с поверхности почвы и растений, вида обрабатываемой культуры, профессиональных навыков и гигиенической грамотности оператора [6]. Таким образом, совокупность воздействующих на оператора факторов образует сложную динамическую систему, процессы в которой взаимосвязаны, взаимодействуют и при многократных повторениях протекают по-разному, обнаруживая случайный характер.…”

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A probabilistic model for risk assessment and predicting the health risk of occupational exposure to pesticides in agriculture

Rakitskii

Заволокина

Березняк

2021

Hygiene and Sanitation

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Introduction. The main point is the influence of a complex of chemical and physical stressors on agricultural machine operators. The processes of occurrence and interaction of harmful factors are probable. Markov processes are a convenient model that can describe the behaviour of physical processes with random dynamics. Purpose of the work: was to develop a probabilistic model of risk assessment for agriculture workers during the application of pesticides based on Markov processes’ theory and evaluate with the help of the developed model the probability of occurrence, the degree of severity and the prediction of the different influence of adverse factors on the operator. Materials and methods. The mechanized treatment of pesticide is presented in the form of a system, the states of which are ranked according to the degree of danger to the operator: from non-dangerous to dangerous. The transition occurs under the influence of negative factors and is characterized by the probability of pij transition. Based on the marked graph of the system states, a stochastic matrix P[ij] of transition probabilities was constructed in one step. There are formulas by which it is possible to calculate the state of systems in k steps for a homogeneous and non-homogeneous Markov chain. Results. Based on Markov chains’ theory, the system’s behaviour is modelled when using single-component preparations based on imidacloprid for rod spraying of field crops. Received vector of probabilities of possible hazardous conditions for the employee after each hour of spraying within 10 hours. After 6 hours of working, the probabilistic risk for the operator to stay in a non-dangerous state is about 50 %, and the probability risk of going into a dangerous - at 24 %. The stationary probability distribution results show the inevitability of the transition to a hazardous state of the system if enough steps have been taken. Conclusion. With this model, you can supplement the operator’s health risk assessment system, analyze, compare and summarize the results of years of research. The calculated statistical probabilities can be used in the development of new hygiene regulations with using pesticides.

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Section: материалы и методыunclassified

A probabilistic model for risk assessment and predicting the health risk of occupational exposure to pesticides in agriculture

Rakitskii

Заволокина

Березняк

2021

Hygiene and Sanitation

Self Cite

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Toxicological and hygienic requirements when working with pesticides in agriculture

Bereznyak

Fedorova

Ilnitskaya

2022

Hygiene and Sanitation

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Intensive use of pesticides in Russia puts forward the task of identifying ways to prevent their adverse effects on the health of workers. The purpose of the study is to substantiate the safety requirements when working with pesticides in agriculture from a toxicological and hygienic standpoint. An analytical study was performed. Research materials documents regulating the use of pesticides, scientific publications, data from own research. The safety of pesticides for those working with them is based on numerous toxicological and hygienic studies carried out at the stage of registration tests. According to the results of toxicological studies, including the establishment of toxicity parameters for acute inhalation, dermal and oral intake, subacute and chronic exposure, in accordance with the hygienic classification of pesticides by degree of danger, a hazard class is established, which determines the possibility, scale, technology of the use of pesticides on the territory of the Russian Federation. Particular attention is paid to the study of sensitizing effects, irritating effects on the skin and mucous membranes, as well as possible manifestations of long-term effects (teratogenic, embryotoxic, carcinogenic, mutagenic). The severity of carcinogenic and mutagenic effects determines the restriction of the use of pesticides, up to a complete ban. Hygienic regulation of the content of active substances of pesticides is carried out taking into account the hazard class and toxicity parameters. A prerequisite for the safe use of pesticides is the establishment of hygienic standards in almost all environments. The last stage of the study is an assessment of the risk to workers when using each pesticide in real conditions of agricultural production and regulation of use. Conclusion. Safety requirements for those working with pesticides when applied using various technologies in agricultural conditions are determined taking into account the hazard class of pesticides and the equipment used. The application of the method of assessing the risk of exposure to pesticides at the stage of registration tests guarantees the exclusion from circulation in Russia of drugs that pose a real danger to a working person. The minimum risk of exposure to pesticides on workers is ensured by compliance with all safety requirements and application regulations.

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Model of the assessment of the risk of conditions of the work with the use of pesticides: results and development

Cited by 2 publications

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A probabilistic model for risk assessment and predicting the health risk of occupational exposure to pesticides in agriculture

A probabilistic model for risk assessment and predicting the health risk of occupational exposure to pesticides in agriculture

Toxicological and hygienic requirements when working with pesticides in agriculture

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