Exposure to pesticide residues during manual removal of bolting sugar beets: determination of transfer coefficients for worker risk assessment

Abstract Background Pesticide residues in traditional Chinese medicines pose a potential risk to human health. However, little is known about the characteristics of pesticide residues in the fritillariae thunbergii bulbs (FTB). Objective This study aims to establish a method for the determination of pesticide multi-residues in FTB and then measured their residual levels in the FTB collected from nine cultivation regions. Methods A modified QuEChERS method coupled with GC/UPLC was used to determine the residues of 24 pesticides in the FTB and soil samples. Results The recoveries of these pesticides at three concentrations were 72.17–112.48% in the FTB and 70.92–113.74% in the soil with RSD < 11.83%, and the LOD and LOQ ranged from 0.005–10 μg/kg and 0.011–22 μg/kg, respectively. A total of 13 pesticide residues were detected in the FTB samples with the residual levels of 0.0011–509.63 μg/kg, which were all below the referred MRLs in other Chinese herbs or food. Meanwhile, dietary intake risk assessment showed that the risk of pesticide residues in the FTB was acceptable to consumers. Conclusions This study developed a method for the determination of pesticide multi-residues in the FTB and cultivated soil samples, and furthermore the dietary intake risk of pesticide residues in the FTB is safe. Highlights A modified QuEChERS method was established for the determination of 24 pesticides in the FTB with high sensitivity, accuracy, and precision.

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Survey of pesticide residues in table grapes: Determination of processing factors, intake and risk assessment

Food Additives & Contaminants ◽

10.1080/02652030701245320 ◽

2007 ◽

Vol 24 (8) ◽

pp. 886-895 ◽

Cited By ~ 27

Author(s):

M. E. Poulsen ◽

H. K. Hansen ◽

J. J. Sloth ◽

H. B. Christensen ◽

J. H. Andersen

Keyword(s):

Risk Assessment ◽

Pesticide Residues ◽

Table Grapes ◽

Processing Factors

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Method for the determination of oxygen transfer coefficients (KLa) with the correction for the actual cultivation conditions

Journal of Biochemical Toxicology ◽

10.1002/jbt.2570270123 ◽

1977 ◽

Vol 27 (1) ◽

pp. 155-164

Author(s):

Jan Páca ◽

Vratislav Grégr

Keyword(s):

Oxygen Transfer ◽

Transfer Coefficients ◽

Cultivation Conditions

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Methods of risk assessment in forecasting the consequences of accidents at pipeline transport facilities

SCIENCE & TECHNOLOGIES OIL AND OIL PRODUCTS PIPELINE TRANSPORTATION ◽

10.28999/2541-9595-2020-10-6-663-673 ◽

2020 ◽

Vol 10 (6) ◽

pp. 663-673

Author(s):

Vladislav N. Slepnev ◽

◽

Alexander F. Maksimenko ◽

Elena V. Glebova ◽

Alla Т. Volokhina ◽

...

Keyword(s):

Risk Assessment ◽

Evaluation Method ◽

Assessment Procedure ◽

Expert Evaluation ◽

Main Pipeline ◽

Pipeline Transport ◽

Forecasting Accuracy ◽

Distribution Of Resources ◽

Expert Evaluation Method

The choice of risk assessment procedure is one of the essential stages of efficient structuring of processes on prevention, localization and elimination of the consequences of accidents at main pipeline transport facilities. The authors analyzed themed publications and regulatory documents, governing procedures of risk assessment and forecasting of the consequences of possible accidents, and defined main problems in this area. Procedure for the risk assessment of accidents at main pipeline facilities was developed, the basis of which is the expert evaluation method. The procedure includes the determination of the main criteria for the assessment the probability of accident initiation and development and the evaluation of the severity of its consequences, an expert evaluation of criteria significance, their classification, and creation of a rating for hazardous pipeline sections. The application of the procedure application allows to specify the list of facilities that require high priority forecasting of accidents consequences, thus to optimize the distribution of resources and the overall increase of efficiency in planning while defining forces and special technical devices, necessary for containment and rectification of emergencies. Expert evaluation method application allows considering the specifics of certain enterprises, their technical and technological peculiarities, thereby increasing forecasting accuracy.

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