Phytoremediation of Air Pollutants: A Review

Air pollution tolerance index: An approach towards the effective green belt around Kathmandu metropolitan city, Nepal

“…Chlorophyll undergoes several photochemical reactions such as oxidation, reduction, reversible bleaching under stress conditions (Sharma et al, 2013) influenced by pollution level as well as other biotic and abiotic stresses. Depletion in chlorophyll content causes a decrease in productivity of plant due to decrease in photosynthetic activity (Seyyednjad et al, 2011) and subsequently plant exhibit poor vigor, affecting the tolerance of plants towards air pollution (Chinthala & Khare, 2012;Singh & Verma, 2007). Schima wallichi exhibited the highest chlorophyll content being far from the pollution (less pollutedcontrolled site) and representing high productivity of plant and functioning.…”

“…Bio-monitoring of air pollution and its impact on plants biochemical parameters is highly relevant in air pollution science (R ai et al, 2013). The parameters lik e leaf pH, relative water content, chlorophyll content, and ascorbic acid content combinely suggested as the best index of the susceptibility levels of plants known as the air pollution tolerance index (APTI) (Kuddus et al, 2011), as plant sensitivity and tolerance varies with change in these parameters (Liu & Ding, 2008;Singh & Verma, 2007). Combination of these parameters gives more reliable results than those obtained by individual parameters (Bora & Joshi, 2014).…”

PAHs accumulation on leaves of six evergreen urban shrubs: A field experiment

“…In the first, pre-existing plants growing in urban and periurban areas, along roadsides, public parks or private gardens were sampled (Lodovici et al, 1998(Lodovici et al, , 2003Howsam et al, 2000;Lehndorff and Schwark, 2004;Singh and Verma, 2007;Wang et al, 2008;Lehndorff and Schwark, 2009;De Nicola et al, 2011b;Papa et al, 2012;Noth et al, 2013;Terzaghi et al, 2013). In the second scenario, the plants were sampled in the surroundings of disused or still working industrial sites (Sharma and Tripathi, 2009;Rodriguez et al, 2010Rodriguez et al, , 2012Wang et al, 2012).…”

Oxidative stress potential of Lead-Zinc mining on selected plants growing in Ishiagu, Nigeria

“…Plant pH influences nutrient solubility and uptake in plants and can modify the toxicity of air pollutants (Klumpp et al, 2000.). Generally plants with low pH are less tolerant of pollution than those with high pH (Singh and Verma, 2007). Therefore, it is likely that all plants at the study site, with the exception of Chromoleana odorata and Ipomoea asarifolia both of which have pH of 6.9 are susceptible to heavy metal related pollution.…”