Wyniki wyszukiwania - AGRO

1

Input of mercury compounds with the Vistula waters

100%

Brzezinska A., Bogacka T., Taylor R., Trzosinska A.

Oceanologia

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1979

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tom 11

2

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Sulphur as a fertiliser component determining crop yield and quality

100%

Skwierawska M., Benedycka Z., Jankowski K., Skwierawski A.

Journal of Elementology

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2016

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tom 21

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nr 2

The aim of this paper was to review 100 years of Polish studies on sulphur fertilisation and its effects on the growth and development of plants, the chemical composition and impact of sulphur compounds on the health of plants, and its fungicidal activity. In the reviewed studies sulphur deficiency generally delayed vegetative growth, caused the dying out of the growth cone, yellow discolouration of the generative and vegetative organs and delayed maturation. Observations of plants have demonstrated that sulphur is essential for normal photosynthetic functions. Plants suffering from a lack or shortage of sulphur had pale green or yellowish, narrow, short and small leaves, and a smaller than normal root system, which was associated with reduced chlorophyll synthesis. The availability of sulphur was found to enatil an improved uptake of nitrogen by plants, thus affecting their quality and optimising the N:S ratio. Fertilisation with sulphur increased the total content of sulphur and sulphates in plants. Findings from studies on the effect of sulphur on the content of macroelements in tested plants are inconclusive. Sulphur used in excess disturbed the ionic balance in plants and indirectly affected the intensity and level of uptake of other nutrients. The results of studies investigating the impact of sulphur on changes in the content of heavy metals were ambiguous and demonstrated either synergistic or antagonistic interactions. Generally, sulphur fertilisation increased the content of glucosinolates in plants and improved their nutritional value. Most studies also showed that sulphur fertilisation improved the disease resistance of plants. Some studies have also demonstrated an increased content of glucosinolates in plants fertilised with sulphur, which stimulated natural resistance to fungal infections.

3

Organic compounds in indoor environments

100%

Zabiegala B.

Polish Journal of Environmental Studies

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2006

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tom 15

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nr 3

Caring for indoor air quality (IAQ) in so-called non-industrial areas has become increasingly common. Because of people's awareness of hazards related to the presence of different substances in indoor air. A review with 103 references concerning the presence of organic compounds in non-industrial indoor environments is discussed. The main sources of indoor air pollutants are presented. Topics discussed also include: total volatile organic compounds (TVOC) concepts in IAQ evaluation, concentrations of organic compounds in indoor and outdoor air, and the influence of outdoor air on indoor air quality expressed as ratios of indoor (I) to outdoor (O) concentrations (I/O).

4

Development of a fluidized batch process using natural powdered zeolite [clinoptilolite]

100%

Valentukeviciene M., Rimeika M.

Polish Journal of Environmental Studies

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2007

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tom 16

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nr 2

The purpose of this research was to examine water treatment improvement by using natural powdered zeolite (clinoptilolite). Experiments were carried out at a laboratory and in a pilot-scaled water treatment plant. The pilot-scaled plant was fed with groundwater containing a high level of organic compounds from the existing waterworks in Lithuania’s Neringa Region. The content of organic substances in the groundwater – characterized by chemical oxygen demand (COD), varied between 5.0 – 40.0 mg O₂ l⁻¹ and the permanganate index (oxidation by potassium permanganate) 4.0 – 8.0 mg O₂ l⁻¹ was determined during this case study. There was no significant reduction using conventional water treatment. Laboratory analysis of water quality showed: total iron, ammonium, aluminium residual concentrations, pH, colour (Pt scale), turbidity, COD and permanganate index. The drinking water had an undesirable colour, taste and odour due to high concentrations of organic substances in the groundwater. A fluidized batch process and adsorption of natural powdered zeolite were used for reducing organic substances in the water with the effectiveness of total iron concentration reduction by 96%. Experimental research results are included in the article.

5

The influence of selected environmental toxins on the speed of decomposition of organic compounds in processes of oxygen biodegradation

100%

Skoczko I., Ignatowicz K.

Polish Journal of Environmental Studies

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2004

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tom 13

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nr 2

Nowadays, when pesticides are commonly available and used in an uncontrolled way, the danger of their infiltration into water and to sewage is very serious. Therefore, it is important to check the influence of chosen environmental toxins on sewage biodegradation effects and on the speed of decomposition of organic compounds. This paper presents the results of research into the changes of reaction rate constants in Eckefelder’s and Grau’s equations.

6

Use of a planarian Dugesia tigrina Girard in the studies of acute toxicity of organic substances

100%

Piontek M.

Polskie Archiwum Hydrobiologii

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1999

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tom 46

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nr 3-4

7

The synthesis and the investigation of fungistatic properties of Schiff's bases derivatives of triphenylimidazole

100%

Zakrzewski A., Janota H., Sadowski C.

Pestycydy

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2002

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nr 1-4

8

Exposure to airborne microorganisms and volatile organic compounds in different types of waste handling

100%

Kiviranta H., Tuomainen A., Reiman M., Laitinen S., Nevalainen A., Liesivuori J.

Annals of Agricultural and Environmental Medicine

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1999

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tom 06

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nr 1

9

Studies of mixed monalayers of lecithin and organometallic compounds

100%

Trela Z., Przestalski S., Hladyszowski J.

Polish Journal of Environmental Studies

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1997

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tom 06

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nr 4

Compression isotherms of mixed monomolecular layers at water-air interface, formed of lecithin (DPPC) and an organometallic compound (Me3PbCl, Me3SnCl, Et3PbCl, Et3SnCl) at various molar fractions (x = 0.0,0.2,0.4, 0.6, 0.8, 1.0) were studied. It was found that compression isotherms of the pure organometallic compounds (x = 1.0), in the range of mean molecular areas of 1.0 nm2 and ca. 0.15 nm2, did not show any practical increase in surface pressure. The isobaric relationship between mean molecular areas and molar fraction of an organometallic modifier are linear for most of the pressures chosen, which follows from analysis of the experimental isotherms obtained and demonstrates the ideal behaviour of the system under study. All the compounds studied form nearly ideally-behaving systems with lecithin. Presumably, the effects observed may be the result of molecular aggregation on the water phase surface, which in a mixed monolayer may lead to separation of the phases: organometallic compound - lecithin.

10

Traffic-generated air pollution with volatile organic compounds in Krakow and its environs

100%

Juszkiewicz A., Kijak B.

Polish Journal of Environmental Studies

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2003

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tom 12

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nr 1

The content of volatile hydrocarbons in the atmospheric air in Kraków as well as in the country in the vicinity of the A-4 motorway was determined. The air was sampled to canisters made of electropolished stainless steel. Determinations of hydrocarbons were performed on a gas chromatograph equipped with acryogenic trap and flame-ionization detector. The contribution of traffic to air pollution with volatile hydrocarbons both in built-up and open areas in the vicinity of busy motorways was estimated.

11

Production of fungal volatile organic compounds in bedding materials

100%

Lappalainen S., Pasanen A. L., Pasanen P., Kalliokoski P., Husman K.

Annals of Agricultural and Environmental Medicine

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1994

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tom 01

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nr 2

12

Synergism in the action of flavonoids and organometallic compounds on membranes

100%

Gabrielska J., Soczynska-Kordala M., Hladyszowski J., Bakowska A., Przestalski S.

Cellular and Molecular Biology Letters

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2002

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tom 07

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nr Suppl.

13

Gas chromatoraphic determination of Zn, Cu, Ni in bottom sediments in the form of diethyldithiocarbamate complexes

84%

Halkiewicz J., Grzybowski J., Sacharczuk E.

Oceanologia

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1981

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tom 13

14

Antibacterial activity of selected surfactants

84%

Wieczorek D., Gwiazdowska D., Michocka K., Kwasniewska D., Kluczynska K.

Towaroznawcze Problemy Jakości. Polskie Towarzystwo Towaroznawcze

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2014

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nr 2

15

Organic compounds in rainfall at Hornsund, SW Spitsbergen: qualitative results

84%

Krawczyk W. E., Skret U.

Polish Polar Research

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2005

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tom 26

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nr 1

65-76

Research on the chemistry of atmospheric precipitation in the Hornsund region of Svalbard has been extended by analysis of the organic contents. In rainfall samples collected in September 2003, the organics were separated by solid phase extraction (SPE), eluted and analysed on gas chromatograph coupled to a mass selective detector (GC/MS). Rainfall pH was in the range 4.72-5.45, the low values suggesting possible pollution. Concentrations of inorganic ions, expressed as total dissolved salts (TDS), were 5.40-13.18 mg L-1. Non-sea-salt (nss) sulphates were in the range 5-11 µeq L-1. In all samples, long-chain alkanes with chain length up to C36, and their methyl derivatives were detected. Among aromatic compounds biphenyl, dibenzofuran and its methyl derivatives were found. Polycyclic aromatic hydrocarbons (PAHs) were represented by naphthalene, phenanthrene, fluorene, acenaphthene, fluoranthene and pyrene. There were no PAHs with higher numbers of rings. The synoptic meteorological conditions in September 2003 indicate that all organic and inorganic pollutants were of local origin.

16

The content of sulphur organic and inorganic compounds in the waste activated sludges, their turnover in soils and influence on plants. Part III. The content of macroelements in Lolium multiflorum

84%

Godlewska A., Kalembasa S.

Polish Journal of Soil Science

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2003

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tom 36

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nr 2

175-186

The waste activated sludges had a significant influence on the content of macroelements in Lolium multiflorum whereas waste activated sludges from the Drosed Co. were a better source of nutrients for plants than the waste activated sludge from Siedlce. All other parameters investigated, such as type of soil and liming also had a significant influence on the features investigated.

17

Organic compounds fractionation for domestic wastewater treatment modeling

84%

Makowska M., Spychala M.

Polish Journal of Environmental Studies

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2014

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tom 23

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nr 1

Organic compounds in domestic wastewater have a highly differentiated composition, which depends on the source of wastewater. Detailed fractionation of organic pollutants is indispensible to determine their transformation during treatment processes. Mathematical modeling requires the division of organic compounds in wastewater into the fractions: dissolved, suspended, biodegradable, and unbiodegradable. It is possible to determine the content of fractions based on BOD₅, COD, and reaction rate coefficients. In this work, fractions of organic pollutants in wastewater, originating from small sources and treated in small treatment plants (0.66-22.00 m³/d), were identified. For comparison, fractions of organic pollutants in a medium municipal wastewater treatment plant (WWTP) of 4,000 m³/d capacity have been determined. It was found that the wastewater from small sources and households differ in composition from typical municipal sewage. They are characterized by higher contents of dissolved and suspended biodegradable fractions. A similar result was found for septic tank effluent. The high content of biodegradable compounds and relatively large reaction rate coefficients positively affect the efficiency of pollutant removal.

18

Wpływ dodatków mineralnych i organicznych do osadów ściekowych oraz kompostowania otrzymanych mieszanin na zawartość w nich metali ciężkich

84%

Kalembasa S., Wysokinski A.

Zeszyty Problemowe Postępów Nauk Rolniczych

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2008

|

tom 526

Określono wpływ mieszania osadów ściekowych z tlenkiem wapnia, popiołem z węgla brunatnego, trocinami i słomą oraz kompostowania otrzymanych mieszanin na zawartość w nich wybranych metali ciężkich (Pb, Cr, Cd, Cu, Zn, Ni). Dodatek wszystkich użytych materiałów do osadów ściekowych zmniejszył zawartość ołowiu, miedzi i cynku w otrzymanych mieszaninach. Mniejszą zawartość chromu, kadmu i niklu w mieszaninach niż w samych osadach uzyskano po ich zmieszaniu z tlenkiem wapnia, trocinami i słomą. Dodatek popiołu z węgla brunatnego do osadów o niskiej zawartości chromu (z Siedlec), niklu (z Łukowa) i kadmu (obydwa rodzaje osadu) zwiększył zawartość tych pierwiastków w otrzymanych mieszaninach. W trakcie kompostowania uzyskano zwiększenie zawartości badanych metali ciężkich, zarówno w samych osadach, jak i w ich mieszaninach ze wszystkimi komponentami. Zwiększenie zawartości metali ciężkich w osadach z dodatkami mineralnymi było najczęściej mniejsze niż w samych osadach i ich mieszaninach z trocinami i słomą. W osadach ściekowych z Łukowa (stabilizowane w warunkach tlenowych) zwiększenie zawartości metali ciężkich w trakcie kompostowania było większe niż w osadach z Siedlec (po metanowej fermentacji).

19

The effect of traffic in the Wroclaw town centre on the mutagenicity of airborne particulate matter

84%

Jadczyk P.

Acta Poloniae Toxicologica

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2001

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tom 09

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nr 1

20

Removal of organic compounds from municipal wastewater by immobilized biomass

84%

Zielinska M., Wojnowska-Baryla I.

Polish Journal of Environmental Studies

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2004

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tom 13

|

nr 5

Two porous ceramic carriers (internal active surface 0.04 m2 for carrier I and 0.2 m2 for carrier II) with immobilized activated sludge were the stationary filling of the reactors. Municipal wastewater was treated at hydraulic retention time (HRT) from 70 to 15 min. The efficiency of organic compounds removal from wastewater changed for reactor I from 85.2 to 93.8%, for reactor II from 62.9 to 87.1%. The contribution of oxidation, biomass synthesis, denitrification and intracellular storage in organic compounds removal depended on the type of carrier and on hydraulic retention time (HRT). Over 20% of organic loading in influent to reactors I and II was used for cellular oxidation. Only for reactor I at HRT 30 and 15 min higher participation of nitrate respiration than oxygen was one observed. From 6.1 to 14.5% of loading in influent was removed as a result of sludge yield. For reactor I the high contribution of intracellular storage in organic compounds removal from wastewater was observed.

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