[
[1] Adamczewska, M., Siepak J. & Gramowska H. (2000). Studies of levels of polycyclic aromatic hydrocarbons in soil subjected to anthropopressure in the city of Poznań. Pol. J. Environ. Stud. 9, 34–43.
]Search in Google Scholar
[
[2] Baćmaga, M., Wyszkowska J., Borowik A., Tomkiel M. & Kucharski J. (2014). Response of fungi, β-glucosidase, and arylsulfatase to soil contamination by Alister Grande 190 OD, Fuego 500 SC, and Lumax 537.5 SE herbicides. Pol. J. Environ. Stud. 23,1, 19–25.
]Search in Google Scholar
[
[3] Chrząścik, I., Szymalska M. & Kluska M. (2007). Evaluation of mercury content in water precipitation in the area of city Siedlce by isotachophoresis method. Oceanol. Hydrobiol. Stud. XXXVI,3, 1–8.
]Search in Google Scholar
[
[4] Chrząścik, I., Szymalska M. & Kluska M. (2007). The content of PAH in the surface water of the Oleckie Wielkie Lake. Physicochem. Probl. Nat. Waters Ecol. V, 241–245.
]Search in Google Scholar
[
[5] Chrząścik, I., Szymalska M. & Kluska M. (2008). Analysis of anion content in water precipitation in the area of cities Siedlce and Olecko by isotachophoresis method. Arch. Environ. Prot. 34,2, 105–112.
]Search in Google Scholar
[
[6] Deska, J., Bombik A., Marciniuk-Kluska A. & Rymuza K. (2011). Trends in lead and cadmium content in soils adjacent to European Highway E30. Pol. J. Environ. Stud. 20,2, 317–325.
]Search in Google Scholar
[
[7] Ermer, J. & Ploss H. (2005). Validation in pharmaceutical analysis: part II: Central importance of precision to establish acceptance criteria and for verifying and improving the quality of analytical data. J. Pharm. Biomed. Anal. 37, 859–870. http://dx.doi.org/10.1016/j.jpba.2004.06.01810.1016/j.jpba.2004.06.018
]Search in Google Scholar
[
[8] Gadzała, R. M. & Buszewski B. (1995). Properties and determination of polycyclic aromatic hydrocarbons (PAHs) using chromatographic methods. Pol. J. Environ. Stud. 1, 5–14.
]Search in Google Scholar
[
[9] Ignatowicz, K. (2007). Content of harmful substances in natural environment al elements near pesticide tomb. Oceanol. Hydrobiol. Stud. XXXVI,3, 163–170.
]Search in Google Scholar
[
[10] Kosobudzki P. & Buszewski B. (2003). Application of isotachophoresis to the compost analysis. Chem. Anal. (Warsaw), 48, 555–565. 10.1023/A:1023531530272
]Search in Google Scholar
[
[11] Michalski, R. (2003). Selected anions and cations in minerale waters. Arch. Environ. Prot. 29, 8–18.
]Search in Google Scholar
[
[12] Niedzielski, P., Kowalczuk Z. & Siepak J. (1999). Speciation analysis of arsenic, antimony and selenium in the surface waters of Poznań. Pol. J. Environ. Stud. 8(3), 183–187.
]Search in Google Scholar
[
[13] Polkowska, Ż., Astel A., Walna B., Małek, S., Mądrzycka, K., Górecki, T., Siepak, J., Namieśnik, J. (2005). Chemometric analysis of rainwater and througfall at several sites in Poland. Atmos. Environ. 39, 837–855. DOI: 10.1016/j.atmosenv.2004.10.026. http://dx.doi.org/10.1016/j.atmosenv.2004.10.02610.1016/j.atmosenv.2004.10.026
]Search in Google Scholar
[
[14] Walna, B. & Siepak J. (1999). Research on the variability of physic-chemical parameters characterizing acidic atmospheric precipitation at the Jeziory Ecological Station in the Wielkopolski National Park (Poland). Sci. Total Environ. 239, 173–187. DOI: 10.1016/S0048-9697(99)00303-4. http://dx.doi.org/10.1016/S0048-9697(99)00303-410.1016/S0048-9697(99)00303-4
]Search in Google Scholar
[
[15] Walna, B., Polkowska, Ż., Małek, S., Mądrzycka, K., Namieśnik, J., Siepak, J. (2003). Tendencies of change in the chemistry of precipitation at three monitoring stations 1996–1999. Pol. J. Environ. Stud. 12,4, 473–478.
]Search in Google Scholar
[
[16] Walna B., Siepak M. (2012). Heavy metals: their pathway from the ground, groundwater and springs to Lake Góreckie (Poland). Environ. Monit. Assess. 184, 3315–3340, DOI 10.1007/s10661-011-2191-7. http://dx.doi.org/10.1007/s10661-011-2191-710.1007/s10661-011-2191-721720865
]Search in Google Scholar
[
[17] Water Framework Directive 2000/60/EC (WFD) of 23 October 2000 establishing a framework for Community action in the field of water policy.
]Search in Google Scholar
