Applied sciences

Archives of Environmental Protection

Content

Archives of Environmental Protection | 2002 | vol. 28 | No 4

Download PDF Download RIS Download Bibtex

Abstract

Water supply of Riga City uses water from the river Daugava, lakes Baltezers as well as deep well groundwater as drinking water. Due to chlorination of drinking water before use, inhabitants health may be at risk due to trihalornethanes and some organic pollutants. The objective of this study was to determine the level of pollution of drinking water and possible health risk. Pollutants were determined with previous solid phase microextraction (on fibre coated with polidirnethylsilox ane) or pentane extraction of chemical substances by use of gas chromatography and for benzo(a)pyrene by spectrofluorimetry The summary concentration of thrihalornethanes (bromoform, chloroform, bromodichlorornethane, dibromochloromethane) ranged from 3.4 ug/drn' to 304.4 etg/dm3 (maximum allowable concentration - MAC 100 μg/dm-' according to water standards in Latvia), summary lrichloroethene and tetrachloroethene occurred in the concentration from I .O ug/drn' to 13.4 ug/dm' (MAC = I O ug/drri') The level of aromatic hydrocarbons benzene and toluene was below 0.2 ug/drrr' (MAC = I μg/dm'). The concentration of benzo(a)pyrenc was below 0.002 ug/drrr' (MAC= O.Ol ug/drrr'). Fluctuations of concentration were found to depend on the season and place of sampling. The results confirmed an occurrence of risk due lo the impact of trihalomethanes to health. Therefore, water ozonation has been planed to replace chlorination with ozonation in Riga City.
Go to article

Authors and Affiliations

Marite Bake
Silvija Pastare
Una Zilbere
lnese Pastare
Download PDF Download RIS Download Bibtex

Abstract

The paper presents the result of hydrogeological studies of Lublin Coal Basin (LCB), particularly at Jurassic level. It is arranged in several parts: I) stratigraphy, tectonics and lithology of Jurassic system at LCB territory, 2) groundwater dynamics, 3) chemical composition of waters, 4) hyclrogeochemical stability conditions. The paper also suggests a few main directions of using the Jurassic waters in prophylaxis and therapy of many diseases. The waters, containing considerably elevated quantities of fluorine compounds come from Jurassic formation lying at the considerable depth. Coal mine joins them with saline Carboniferous waters. After pretreatment, they are discharged to the surface ancl to the river. Jurassic waters belong to the group of low mineralised waters. They contain 6-1 I mg F/dm3 fluorides. Thus they can be usefu I in prophylactics of teeth ancl paradental illnesses, particularly in risk groups. Thanks to, fluorides contained in these waters they can be used during and after treatment and to support surgical operations or rehabilitation effects.
Go to article

Authors and Affiliations

Małgorzata Ciosmak
Download PDF Download RIS Download Bibtex

Abstract

Toxic influence of two new imidazolium chlorides was examined on plants: dicotyledonous Sinapis alba Linnaeus and monocotyledonous Horde11111 vulgare Linnaeus. These compounds are meant to be new wood preservatives because of their excellent fungicidal properties. They were proved Io be less toxic 10 barley than 10 charlock. The compound 3,3'-[(2,7-dioxyoktymethylene) bis (1-oktyl)imidazolium] chloride was less fitotoxic 10 both plants than l-decyl-3-hexylotiomethylimidazolium chloride.
Go to article

Authors and Affiliations

Elżbieta Grabińska-Sota
Danuta Witecy
Download PDF Download RIS Download Bibtex

Abstract

Disinfection of drinking water is usually carried out by chlorination process. This is a well known, effective technology, which has many advantages. however during this process dangerous for health byproducts, such as trihalornethanes as well as chlorate, chlorite and bromale arc formed. Another disinfection process. which has emerged as the most promising alternative to chlorination technique, is ozonation. In spite of undeniable advantages. there are certain undefined hazards resulting from this method of water treatment. It is especially due to formation of carcinogen bromale anions in bromide containing waters. Determination of bromale as well as other inorganic oxyhalides is usually carried out by ion chromatography with conductivity detection. The detection sensitivity can be improved by using alternative hyphenated techniques such as IC-ICPMS or IS-MS-MS. These techniques are very sensitive, but are highly sophisticated and the instrumentation is very expensive. "Post-column reactions". i.e. derivative techniques coupled with ion chromatography are a relatively cheap and good alternative. This paper is a review or the newest achievements in analytical techniques used for determination of inorganic oxyhalides by-products formed during various drinking water disinfection processes.
Go to article

Authors and Affiliations

Rajmund Michalski
ORCID: ORCID
Download PDF Download RIS Download Bibtex

Abstract

Elevated content or heavy metals in soils is characteristic of the Dąbrowa Górnicza region. The highest concentrations of lead. cadmium and zinc exceed herc 650, 15, and 1000 mg/kg of soil, respectively. Samples of soi I from selected sites underwent the speciation analysis with the use of the Tessier method. modified according to Kersten and Forstner. Results of the investigations proved the highest concentrations or these metals in the area of Trzebiesławice. They occur here in the strongly bound forms and, mainly, their occurrence is related to presence of limestone rocks. The greatest amounts of these metals in easily assimilable to plant forms occur within the area of the town of Dąbrowa Górnicza. The most probable source ot· most of these heavy metals in soils are here contaminants emitted by the industry, mainly by the metallurgy. In the vicinity of the town of Błędów, mainly sandy soils occur, characteristic or which is low content of considered metals. Weak sorption capacities of these soils account for relatively good cxtractability of the three metals. In soils from the Lęka area, strong binding of these metals was confirmed. Occurrence or cadmium should be of special attention because this metal occurs as built in the crystal lattice of minerals.
Go to article

Authors and Affiliations

Bronisław Wyżgolik
Stanislaw Karweta
Ewa Surowiec
Download PDF Download RIS Download Bibtex

Abstract

The theoretical dependence between flocculated suspension settling time and mass floe size has been presented. The good agreement with the experimental relation between settling time of 80% of suspension and mass median floe size was showed, which indicates the possibility of developing a new method for clarification efficiency estimation.
Go to article

Authors and Affiliations

Bernard Połednik
Download PDF Download RIS Download Bibtex

Abstract

In the paper the results on self-purification of mine waters contaminated with polycyclic aromatic hydrocarbons (PAH) have been presented. Samples of waters from the .Zicrnowit" coal mine have been used. Concentrations of PAHs in the deposits and supernatant waters after selected specific periods of time were evaluated. The quantitative and qualitative analyses of 16 selected PAHs (as recommended by the USEPA) were carried out, as well as investigations on the PAH concentration changes versus time in deposits and supernatant waters. Extension of the sedimentation time resulted in increased concentrations of carcinogenic PAHs in deposits. The observed PAHs concentrations in deposits were high and comparable with these found usually in sewage sludge. Outing the whole sedimentation process sorption of compounds which are easily bounded on suspension (with log kow > 7) took place, which led do the decrease of PAH concentration in supernatant waters. 'The accumulation of PAHs in deposits and their desorption lo supernatant waters during the sedimentation process were not signi fi cant.
Go to article

Authors and Affiliations

Beata Caban-Pabian
Download PDF Download RIS Download Bibtex

Abstract

The presence of pesticides in natural waters of such countries as: USA, Canada, Russia, Germany, France, Swizcrland and also in the Bailie Sea and North Sea has been proved many times. The following compounds are detected most often and in largest quantities: lindan, DDT, which has not been used for many years now, Simazine, Atrazine, Chlorfenvinphos and Fenitrothion. The presence of pesticides in superficial waters in the Żuławy Wiślane region has been described many limes by Żelechowska and Makowski. Additionally, my own reserch confirmed the presence of phenoxyacetic acid herbicides in superficial waters in the northern-eastern region - in the Supraśl, Białka, Narew and Biebrza rivers. This paper presents the results of the determination of concentrations of phenoxyacetic herbicides and other pollutants in the Supraśl river. The samples were collected over a period of one year, from April 2000 to March 2001.
Go to article

Authors and Affiliations

Katarzyna Ignatowicz-Owsieniuk