The effect of fly ash particles on the plugging of stomata

Krajíčková, A.; Mejstrik, V.

doi:10.1016/0143-1471(84)90200-9

Cited by 41 publications

(15 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Their appearance is similar in size, shape and chemistry to combustion-generated particles (Swaine, 1994;Hanesch and Peterson, 1999). It is widely known that coal combustion produces fly-ash particles displaying a remarkable degree of sphericity (Singh and Rawat, 1995), ranging from 1 to 2000 Am (Krajickova and Mejstrik, 1984), and coated with various metaloxides, which form magnetite, haematite and maghemite minerals (Del Monte and Sabbioni, 1987;Singh and Rawat, 1995). Therefore, it is possible that past industrial emissions have imparted a non-particle size specific overprint on the magnetic concentration signature of contemporary sediments in the river, with anthropogenically derived pollutants occupying a wide size range.…”

Section: Discussionmentioning

confidence: 99%

Use of mineral magnetic concentration data as a particle size proxy: A case study using marine, estuarine and fluvial sediments in the Carmarthen Bay area, South Wales, U.K.

Booth

Walden

Neal

et al. 2005

Science of The Total Environment

View full text Add to dashboard Cite

Compositional (non-magnetic) data can correlate strongly with particle size, which deems it appropriate as a particle size proxy and, therefore, a reliable means of normalising analytical data for particle size effects. Previous studies suggest magnetic concentration parameters represent an alternative means of normalising for these effects and, given the speed, low-cost and sensitivity of the measurements may, therefore, offer some advantages over other compositional signals. In this work, contemporary sediments from a range of depositional environments have been analysed with regard to their mineral magnetic concentration and textural characteristics, to observe if the strength and nature of the relationship identified in previous studies is universal. Our data shows magnetic parameters (v LF , v ARM and SIRM) possess contrasting relationships with standard textural parameters for sediment samples collected from marine (Carmarthen Bay), estuarine (Gwendraeth Estuary) and fluvial (Rivers Gwendraeth Fach and Gwendraeth Fawr) settings. Magnetic concentrations of sediments from both the marine and estuarine environments are highly influenced by the magnetic contribution of finer particle sizes; Gwendraeth Fawr River sediments are influenced by the magnetic contribution of coarser particle sizes, while sediments from the Gwendraeth Fach River are not influenced significantly by any variations in textural properties. These results indicate mineral magnetic measurements have considerable potential as a particle size proxy for particular sedimentary environments, which in certain instances could be useful for geochemical, sediment transport, and sediment provenance studies. However, the data also highlight the importance of fully determining the nature of the relationship between sediment particle size and magnetic properties before applying mineral magnetic data as a particle size proxy. D

show abstract

Section: Discussionmentioning

confidence: 99%

Use of mineral magnetic concentration data as a particle size proxy: A case study using marine, estuarine and fluvial sediments in the Carmarthen Bay area, South Wales, U.K.

Booth

Walden

Neal

et al. 2005

Science of The Total Environment

View full text Add to dashboard Cite

show abstract

“…Fine aerosols <2 μm may preferentially lodge in micro-ridge structures in the cuticle and in stomatal openings (Burkhardt et al 1995;Song et al 2015;Wang et al 2015), but deposition of coarse aerosol may be less specific. Reduced gas exchange (Nanos and Ilias 2007) has been reported, often attributed to stomatal occlusion by aerosol deposition (Krajíková and MejstÍík 1984;Sharifi et al 1997;Abdullah and Iqbal 1991), but this has not been fully demonstrated.…”

Section: Radiation and Gas Exchangementioning

confidence: 94%

Plants and Atmospheric Aerosols

Burkhardt

Grantz

2016

Progress in Botany

View full text Add to dashboard Cite

“…Fly-ash dust, under certain conditions of humidity, sticks to the leaves or fruits and promotes chemical as well as physical injuries, and small necrotic dark brown spots appear on the leaves of many vegetables such as green beans, turnip, cabbage and tomato . At lower fly-ash deposition rates fly-ash particles accumulate on the guard cell surface and stimulate the mechanism regulating stomatal opening and closure, and prevent them from closing (Fluckiger et al 1979, Krajichova andMajstrick 1984), thereby preventing increased transpiration rates. Foliar application of higher fly-ash deposition rates (8 g/m per day) resulted in decreased transpiration rates due to the barrier created by a thicker layer, and thus reduced vapour loss from the leaves (Mishra and Shukla 1986).…”

Section: Effect Of Fly-ash On Plant Growth and Vegetationmentioning

confidence: 98%

Impacts of fly-ash on soil and plant responses

Gupta

Upendra

Tripathi

et al. 2002

Journal of Plant Research

195

View full text Add to dashboard Cite

Coal combustion produces carbon dioxides, SO x, NO x and a variety of byproducts, including fly-ash, flue gas and scrubber sludge. Fly-ash consists of minute glass-like particles and its deposition on leaves inhibits the normal transpiration and photosynthesis of plants. Fly-ash also affects the physicochemical characteristics of soil because it is generally very basic, rich in various essential and non-essential elements, but poor in both nitrogen and available phosphorus. The massive fly-ash materials have been a potential resource for the agricultural activities as well as the other industrial purposes. Practical value of fly-ash in agriculture as an 'effective and safe' fertiliser or soil amendment can be established after repeated field experiments. Here remains to be disclosed the biological processes and interactions due to 'lack and excess' of the fly-ash exposures along with abiotic and biotic factors. These may involve the symbiotic fixation of nitrogen and the biological extraction of metals following immobilisation of toxic heavy metal ions, as well as other neutralisation and equilibration processes during weathering. Nitrogen-fixing plants with an apparent heavy metal-tolerance can be helpful as the early colonisers of fly-ash dumps and nearby areas.

show abstract

The effect of fly ash particles on the plugging of stomata

Cited by 41 publications

References 3 publications

Use of mineral magnetic concentration data as a particle size proxy: A case study using marine, estuarine and fluvial sediments in the Carmarthen Bay area, South Wales, U.K.

Use of mineral magnetic concentration data as a particle size proxy: A case study using marine, estuarine and fluvial sediments in the Carmarthen Bay area, South Wales, U.K.

Plants and Atmospheric Aerosols

Impacts of fly-ash on soil and plant responses

Contact Info

Product

Resources

About