EVALUATION OF EXCHANGEABLE ALUMINIUM CONTENT AND SELECTED SOIL PARAMETERS OF SWIETOKRZYSKIE PROVINCE

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1 DOI: /ecea (07)081 ECOL CHEM ENG A. 2013;20(7-8): Ma³gorzata WID AK 1 EVALUATION OF EXCHANGEABLE ALUMINIUM CONTENT AND SELECTED SOIL PARAMETERS OF SWIETOKRZYSKIE PROVINCE OCENA ZAWARTOŒCI GLINU WYMIENNEGO I WYBRANYCH PARAMETRÓW GLEB WOJEWÓDZTWA ŒWIÊTOKRZYSKIEGO Abstract: The work involves the determination of exchangeable aluminum content and parameters such as reaction, soil ph, organic carbon and iodine. Soils on the test sites showed a ph ranging from very acidic to alkaline (ph ). The content of exchangeable aluminum in the soil was: mg/100 g and 65 % of Al 3+ mg/100g exceeded the allowable amounts of this element therefore becoming a toxic threat to most plants. Organic matter in the range %, corresponds to % humus content in samples. The soil has a high content of humus, which is crucial for its fertility. For research purposes intensively cultivated areas were selected. In six districts of Swietokrzyskie province which different in terms of geographical location, twenty research points were placed. Soil samples were collected during early spring, before fertilization and sowing. Keywords: mineral soil, ph, soil acidity, exchaneable aluminum, organic matter. Introduction Soil is a non-renewable part of the natural environment, it consists of minerals, organic matter, water, air and living organisms. Organic matter in the environment are all present in the soil, carbon-containing compounds of organic origin. [1, 2].The type and dynamics of the processes occuring in the soil are affected by a number of factors determined as soil-forming: the parent rock, climate, water, living organisms and antropogenic factors. Depending on which of these soil-forming factors was dominated a particular type of soil developed [3 5]. Nearly 80 % of the Polish surface is covered by complex brown soils, podzolic and fawn while podzoilc soils make up about 25 % of all lands [6]. 1 Department of Environmental Engineering and Protection, Faculty of Environmental Engineering, Geomatics and Power Engineering, Kielce University of Technology, al. Tysiaclecia Pañstwa Polskiego 7, Kielce, Poland, phone: , mwidlak@tu.kielce.pl

2 868 Ma³gorzata Wid³ak Podzolic soils have very acidic reaction and low humus content. In acidic soils are easily washed out basic components and their location in the soil solution occupy cations of: hydrogen, aluminum, iron, manganese, which can be a toxic threat to the plant. Aluminum in the soil solution is in the form of soluble and insoluble, and depending on the ph of the soil takes the form of a cation, anion or neutral molecule. Cationic forms of aluminum called aluminum movable or exchangeable are responsible for the formation of the basic properties of the soil environment. The presence of aluminum in the soil also determines its high sorption capacity [7 11]. Soils of Swietokrzyskie province Physical and geographical diversity of the region has a direct impact on the quality of the soil, due to the diversity of the geological structure and the rocks from which they created different types and kinds. Generally, in the north-western, western and northern ends of the province acidic soils predominate. In the eastern and southern parts of the region in arrears loess chernozem and brown soil, which were classified as the most fertile soils of Fig. 1. Soils ph in arable and humus layer in Swietokrzyskie province OSChR Kielce 2010 [6]

3 Evaluation of Exchangeable Aluminium Content and Selected Soil Parameters Swietokrzyskie province (I and II bonitation class). On the south-west and south of the region on the formations of carbonate and sulfate developed rendzinas and pararendzinas. Within the higher hills and mountains slopes are shallow Embryonic soil. In the central and northern parts of the region are anthropogenic soils (in and around the city of Kielce, Skarzysko, Starachowice, Ostrowiec Swietokrzyski) [6, 12]. The ph of the soils in a arable and humus layer in Swietokrzyskie province shows Fig. 1. The aim of this study was to evaluate the content of exchangeable aluminum and selected soils parameters of Swietokrzyskie province. Materials and methods For study were selected soils areas of intensive agricultural use from six districs of Swietokrzyskie province. Districts are located in the central part of the province, north-west, west-south and east-central. Samples were taken from 20 points representing 10 communities of four province regions, all samples were mineral soils. Location and designation of collected research material is presented in Table 2. From every research point was collected representative mineral soil sample which includes soil profile of 0 25 cm, dry air samples were analyzed [13]. Following chemical properties of the soil were determined: ph in 1 N KCl-potentiometry, exchangeable acidity and exchangeable aluminum by Sokolow method, organic carbon by Tiurin method, an iodine value according to PN-83/C standard [14]. Research material taken from selected areas of Swietokrzyskie province was characterized by varying the percentage share of highly acidic soils and acid soils for agricultural land according to data from the Regional Agricultural Chemical Station in Kielce, Fig. 1. Results and discussion Reaction and ph In acidic soils of ph KCl < 4.5 a source of hydrogen ions in the soil solutionare aluminum ions. In these soils absorbed aluminum is in equilibrium with Al ions in soil solution, which acidify the soil by the ability to hydrolyze. ph ranges Soil ph Characteristics of soil material used in the testing Percentage of soil within ph range [%] The lowest value of ph KCl in the ph range Table 1 Al 3+ mg 100 g 1 content for the lowest ph < 4.5 very acidic acidic slightly acidic neutral > 7.2 alkaline

4 870 Ma³gorzata Wid³ak In acidic soils of ph KCl ~ a source of hydrogen ions in the soil solution is primarily hydrogen, present in the soil solution and adsorbed by the absorbent complex [15, 16]. In neutral soils acidic ions (H + and Al 3+) are not dominant, aluminum hydroxides ions are converted to gibbsyt: Al(OH) 2 + +OH Al(OH) 3 Very acidic, acidic and slightly acidic soils in the ph range 3.87 to 6.50 (Table 2) account for 65 % of soil samples from selected municipalities of Swietokrzyskie province. Acidic soils accounts for 35 % of research areas. Soils ph in arable and humus layer in selected municipalities of Swietokrzyskie province March 2012 Table 2 Region number I II III IV Location of community in Swietokrzyskieprovince central region north-west region south-west region east-central region Designation of research sample Soil reaction (ph KCl ) 1A B A B A C A B A B A B A B A B A B A B 6.76 The first (central region) and the second (north-western region) area of research are soils of ph very acidic and acidic. In the third area (south-western region) and the fourth area (central-eastern region) occur soils of acidic reaction, neutral and alkaline with alkaline soils dominance.

5 Evaluation of Exchangeable Aluminium Content and Selected Soil Parameters Organic carbon and iodine value Organic matter is one of the key factors determining soil fertility. It fulfill a variety of direct and indirect functions in the formation of the physical, physico-chemical and biochemical properties of soil. Within the soil organic matter there are two main groups of substances: humus (humus) and non-humic. Humus has a high water capacity, is characterized by a very high sorption capacity, humic compounds increase the buffer capacity of the soil, regulate the ph of the soil solution and the concentration of nutrients. Humus content in the soil is varied. Soils, due to their content of humus can be divided into poor humus soils (0.1 1 %), low humus soils ( %), medium humus soils ( %) and humus above 4 %.The humus content in the levels of accumulation of Polish mineral soils, depending on the type of soil and is usually in the range of 0.9 to 6.8 % [4]. Only organic matter has the ability to adsorb exchangeable cations. Richer in humus soils are more resistant to pollution than low humus containing soils [17, 18]. Determination of organic matter in arable and humus layer in selected municipalities of Swietokrzyskie province March 2012 Table 3 Region number I II III IV Location of community in Swietokrzyskie province central region north-west region south-west region east-central region Designation of research sample Organic carbon content [%] Humus content [%] Iodine number [mg/g] 1A B A B A C A B A B A B A B A B A B A B

6 872 Ma³gorzata Wid³ak The results include the organic carbon content (C org ) in the range from 1.8 to 4.3 %, this corresponds to the content of humus in the range %. Tested soils in 55 % showed humus content on the level of medium-humus soils (Table 3). Sorption ability of the soil is characterized by the iodine value in the range from 25 to 95 mg/g. Aluminum content Exchangeable aluminum occupies a large part of the sorption capacity of more than 50 %, changing the share of other exchangeable cations in the sorption complex. In general, it is concluded that the Al content of 0.05 to 0.4 mg per 100 g of the soil affects toxicaly the growth of most plants in tested soils. The largest amount of exchangeable H + and Al 3+ occurs in humus levels. In Polish soils exchangeable ions content of H + and Al 3+ is m.eq H + and 0.0 to 10.3 m.eq Al per 100 g of soil [10, 19 21]. Exchancheable acidity and exchancheable aluminum in arable and humus layer in selected municipalities of Swietokrzyskie province March 2012 Table 4 Region number I II III IV Location of community in Œwiêtokrzyskie province central region north-west region south-west region east-central region Designation of research sample K w [m.eq/100 g] Al [m.eq/100 g] Al [mg/100 g] 1A B A B A C A B A B A B A B A B A B A B

7 Evaluation of Exchangeable Aluminium Content and Selected Soil Parameters Organic carbon and removable Al and ph of tested soil Analyzing the results of the percentage of organic carbon and removable Al [mg/100g] for the ph (Table 2, 3, 4) of tested soil the following dependence is observed: when the organic carbon content increases the occurrence of removable aluminum is decreasing in acidic, slightly acidic and neutral soil (Fig. 2) C org Al C [%] org Al [mg/100 g] ph Fig. 2. Correlation between percentage of organic carbon, removable aluminum and ph of tested soil Summary 1. Soils of Swietokrzyskie province shows in 35 % acidic reaction. 2. Removable aluminum found in tested samples exceeded in 65 % the content which has toxic influance on plant growth. 3. Organic carbon content indicates medium humus soils. 4. Increasing organic carbon content reduces the occurrence of removable aluminum in acidic and neutral soils. References [1] Zouboulis AI, Wu Jun, Katsoyiannis IA. Removal of humic acids by flotation. Colloids & Surfaces, Part A: Physico-chemical & Engineering Aspects. 2003; 231: DOI: /j.colsurfa [2] Gonet SS. Ochrona zasobów materii organicznej gleb. In: Rola materii organicznej w œrodowisku, Gonet SS, Markiewicz M, editors. Wroc³aw: PTSH; [3] Leinweber P, Schulten H-R, Körschens M. Hot water extracted organic matter: Chemical composition and temporal variations in a long-term field experiment. Biol Fertil Soils, 1995;20: DOI: /BF

8 874 Ma³gorzata Wid³ak [4] Mercik S. Chemia Rolna. Warszawa: Wydawnictwo SGGW; [5] Kwiatkowska-Malina J. Analiza struktury substancji humusowych gleb po wprowadzeniu wêgla brunatnego na podstawie widm fluorescencyjnych. In i Ochr Œrodow. 2011;14(3): [6] Raport Programu Ochrony Œrodowiska dla województwa œwiêtokrzyskiego. Zarz¹d Województwa Œwiêtokrzyskiego. Komitet In ynierii Œrodowiska PAN. Monografie 20. Kielce; PAN; [7] Badora A. Wp³yw ph na mobilnoœæ pierwiastków w glebach. Zesz Probl Nauk Roln. 2002;482: [8] Bezak-Mazur E. Specjacja w ochronie i in ynierii œrodowiska. PAN Komitet In ynierii Œrodowiska. Monografie; 20; Kielce; [9] Gworek B. Glin w œrodowisku przyrodniczym a jego toksycznoœæ. Ochr Œrodow i Zasob Natur. 2006;26: [10] Martyn W, Niemczuk B. Zawartoœæ elaza i glinu w profilach gleb rdzawych ró nie u ytkowanych. Ochr Œrodow i Zasob Natur. 2011;48: [11] Wid³ak M. Rocznik Œwiêtokrzyski, Ser. B: Nauki Przyr. 2011;32: [12] Synteza: Œwiêtokrzyski Zarz¹d Melioracji i Urz¹dzeñ Wodnych w Kielcach. Program ma³ej retencji dla województwa œwiêtokrzyskiego. Kielce; [13] Namieœnik J. Trendy w analityce i monitoring œrodowiskowy. In: Nowe horyzonty i wyzwania w analityce i monitoringu œrodowiskowym. Namieœnik J, Chrzanowski W, Szpinek P., editors. Gdañsk: CEEAM, Politechnika Gdañska; 2003:1-32. [14] Polska Norma PN-83/C Wêgle aktywne. Oznaczenie liczby adsorpcji jodu. [15] Siuta J, ukowski B. Rozwój i potencjalne zagro enia agroekosystemów. Czêœæ I: Uwarunkowania agroekologicznego rozwoju gleb mineralnych. Ochr Œrodow i Zasob Natur. 2009;39: [16] Gorlach E, Mazur T. Chemia rolna. Warszawa: Wyd Nauk PWN; [17] Sapek B. Zapobieganie stratom i sekwestracja wêgla organicznego w glebach ³¹kowych. In Ekol. 2009;21: [18] Huculak-M¹czka M, Hoffman K, Hoffman J, Skut J. Ocena zwartoœci substancji humusowych w wybranych surowcach i odpadach. Proc ECOpole. 2010;4(2): [19] Cieœla W, Malczyk P, Kêdzia W. Glin wymienny w glebach leœnych okolic zak³adów azotowych we W³oc³awku. Chrom, nikiel i glin w œrodowisku. Problemy ekologiczne i metodyczne. Zesz Nauk Polskiej Akademii Nauk Komitet Naukowy przy Prezydium PAN Cz³owiek i Œrodowisko. 1993;5: [20] Graczyk A, Konarski J, Radomska K, D³ugoszek M, Sobczyñska J. Glin nowa trucizna œrodowiska. Biblioteka Monitoringu Œrodowiska. Warszawa: Oficyna Wyd OIKOS; [21] Kabata-Pendias A. Biogeochemia chromu, niklu i glinu. Chrom, nikiel i glin w œrodowisku. Problemy ekologiczne i metodyczne. Zesz Nauk Polskiej Akademii Nauk Komitet Naukowy przy Prezydium PAN Cz³owiek i Œrodowisko. 1993;5:9-14. OCENA ZAWARTOŒCI GLINU WYMIENNEGO I WYBRANYCH PARAMETRÓW GLEB WOJEWÓDZTWA ŒWIÊTOKRZYSKIEGO Katedra In ynierii i Ochrony Œrodowiska Politechnika Œwiêtokrzyska w Kielceach Abstrakt: Praca obejmuje badanie nad zawartoœci¹ glinu wymiennego i parametrów, takich jak: odczyn i ph gleby, wêgiel organiczny i liczba jodowa. Gleby na badanych stanowiskach wykazywa³y odczyn od bardzo kwaœnego do zasadowego (ph 3,87 7,65). Zawartoœæ glinu wymiennego w glebie wynosi³a odpowiednio: 0,09 6,3 mg/100g, w 65 % przekroczy³a dopuszczaln¹ zawartoœæ tego pierwiastka, stanowi¹c toksyczne zagro enie dla wiêkszoœci roœlin. Zawartoœæ materii organicznej w przedziale 1,8 4,3 %, odpowiada zawartoœci próchnicy 3,1 7,5 % w badanych próbkach. Gleba charakteryzuje siê wysok¹ zawartoœci¹ próchnicy, która jest decyduj¹cym czynnikiem jej yznoœci. Do celów badawczych wytypowano obszary intensywnie u ytkowane rolniczo. W szeœciu powiatach województwa œwiêtokrzyskiego, zró nicowanych po³o eniem geograficznym, zlokalizowano 20 punktów badawczych. Próbki gleby pobierano wczesn¹ wiosn¹, przed nawo eniem i zasiewami. S³owa kluczowe: gleba mineralna, ph, kwasowoœæ gleby, glin wymienny, materia organiczna