By Marcel van der Perk

ISBN-10: 0203963571

ISBN-13: 9780203963579

ISBN-10: 0415409438

ISBN-13: 9780415409438

This textbook presents an summary of shipping and destiny strategies of environmental illness, in any such means that the reader can either comprehend and are expecting contaminant styles in soil, groundwater, and floor water. In agreement to so much latest texts, soil and water toxins are taken care of as built-in environmental topic from a geographical/spatial viewpoint at aspect, neighborhood, nearby, and catchment scales. The spatial strategy hyperlinks up with contemporary advancements and developments in environmental laws and different built-in catchment administration tasks. It includes 4 coherent components: 1. advent to soil and water infection; 2. resource, position, and behaviour of gear in soil and water; three. shipping and destiny approaches of gear in soil and water; and four. styles of drugs in soil and water. meant for undergraduate and graduate scholars in Earth and Environmental Sciences, who comprehend the basics of chemistry, hydrology and soil science; may additionally function an invaluable reference for pros.

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Extra resources for Soil and Water Contamination: From molecular to catchment scale (Balkema: Proceedings and Monographs in Engineering, Water and Earth Sciences)

Sample text

Octanol is an organic solvent used as a surrogate for natural organic matter. Non-polar, hydrophobic organic compounds prefer octanol (large value of Kow) but polar, hydrophilic organic compounds prefer water (small value of Kow). g. EPA, 2006; ATDSR, 2006) and are useful in the estimation of other parameters, such as the aqueous solubility and distribution coefficient for adsorption of organic compounds to organic matter. The distribution coefficient approach for sorption of substances to solids is discussed in more detail in the next section.

4). 38), it was assumed that temperature variations have a negligible effect on the reaction enthalpy, which is generally true for the temperature ranges normally Basic environmental chemistry 31 found in nature. The reaction enthalpy ∆Hr0 is calculated from the formation enthalpies, which are listed in thermodynamic tables. 6 kJ mol-1 Note that ∆Hr0 is negative, so the reaction is exothermic, which implies that heat is lost when calcite dissolves. 80 • 10-6 The larger value of K at 15 °C implies that the equilibrium shifts to the right with decreasing temperature.

The range of pH over which the buffering effects are effective depends on the concentration and nature of the weak acid and its conjugate salt. In general, a weak acid is an effective buffer at pH = pKa ± 1 pH unit. 10. 13 Buffer solution A buffer solution contains 100 mmol l-1 acetic acid (CH3COOH) and 100 mmol l-1 sodium acetate (NaCH3COO). 0) ml of 10 mol l-1 HCl is added to this buffer solution. What will be the pH change? 75. Solution First, calculate the pH of the buffer solution before addition of the strong acid.

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Soil and Water Contamination: From molecular to catchment scale (Balkema: Proceedings and Monographs in Engineering, Water and Earth Sciences) by Marcel van der Perk

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