Direct and Subsequent Effects of Contaminated Urban Particulate Matter on Risk Element Mobility and Plant-Availability in Soil

作者：Pupikova Zuzana^*; Szakova Jirina; Sysalova Jirina; Mestek Oto; Tlustos Pavel

来源：Polish Journal of Environmental Studies, 2012, 21(6): 1807-1815.

• urban particulate matter
• risk elements
• mobility
• extractability
• spinach

The effect of soil amendment by different physical fractions (0.063-0.119 mm, and < 0.063 mm) of urban particulate matter (PM) on mobility of potentially risky elements in soil and/or element uptake by plants was investigated in a pot experiment, in which spinach (Spinacia oleracea L.) was cultivated on two different soils. The cadmium (Cd), iron (Fe), lead (Pb), and zinc (Zn) levels were determined in plant biomass and soil after direct and subsequent (evaluated after second vegetation period) soil amendment by PM. Three soil extraction procedures (2 mol.l(-1) HNO3, 0.11 mol.l(-1) CH3COOH, 0.01 mol.l(-1), and CaCl2) were used for the extraction of mobile portions of elements in PM-amended soils. Additionally, the diffusive gradient in thin films (DOT) technique was applied for the assessment of bioavailable pools of the elements in soil. Element mobility decreased in the following order: Cd > Zn > Pb approximate to Fe. The effect of soil physicochemical properties were determinative for extractability as well as for plant uptake of these elements. Neither in the first nor in the second vegetation period did the soil amendment by PM result in significant changes of mobility and plant-availability of the investigated elements which confirms a relatively high stability of PM in the soil and a weak plant uptake of PM-derived risk elements via roots.

• 出版日期2012