Biotesting of modeled drilling mud as an indicator of environmental risk

In the system of environmental monitoring, biomonitoring plays an important and independent role. The essence of the method determining the toxicants' effect consists in the specially selected organisms under standard conditions and recording different behavioral, physiological and biochemical factors. The paper studies the biological influence of modeled drilling mud components. The research results have shown the toxic effect of investigated muds. The obtained data confirm that biotesting can be applied for drilling fluids certification by the complex assessment of hazardous substances

Geoecological assessment of mercury load in the impacted area of the thermal power plant of Seversk

The article deals with the experimental data, on which base the mercury level and modes of occurrence are detected in the insoluble fractions of aerosol in snow and in snowmelt water in the impacted areas of Seversk thermal power plant. The geochemical indices were calculated, the value of mercury load on the snow cover in the conventionally near field and far field impacted areas of fuel and energy complex enterprise was defined. © (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only

Element composition of solid airborne particles deposited in snow in the vicinity of gas-fired heating plant

Local heating plants are the main pollution source of rural areas. Currently, there are few studies on the composition of local heating plants emissions. The article deals with the research results of air pollution level with solid airborne particles in the vicinity of local gas-fired heating plants of some districts of Tomsk region. The snow sampling was conducted for the purpose of solid airborne particles extraction from snow cover. The content of 28 chemical elements (heavy metals, rare earth and radioactive elements, aurum, argentum, bromine) in the samples was detected using instrumental neutron activation analysis. The mercury content was determined by the flameless atomic absorption. The results have shown that the dust load value corresponds to low pollution level and 3,5 times exceeds the background value. It was detected, the content of studied elements exceeds the baseline data, and level of pollution with these elements corresponds to the average pollution level. It is suggested, the income of solid airborne particles containing these elements is connected both with emission of gas-fired heating plant, and local and trans-border sources