Comparative Study of Heavy Lead Pollution in Roadside Soil and Plants by Railway and Highway at Tangail District in Bangladesh

Abstract

This study explains the effect of heavy Lead pollution in soil and plants along the highway and railway of Tangail district. The metal concentration in soil and plant is decreased with increasing distance from the road of highway and railway. Lead is one of the most toxic elements. It is non-biodegradable and its toxicity does not change with time. Use of leaded gasoline in vehicles and train are known as the major source of lead pollution. Highway and railway of Tangail are two busiest routes of Bangladesh and pollution is rising day by day. To reveal the present situation in soil and plant samples were collected at various distances (0m, 15m, 30m) from Railway and highway roads and analyzed for lead by Atomic Absorption Spectrophotometric (AAS) method. The results show that the soil and plant samples along these places are contaminated with lead. The highest lead contents 0.1931 ppm in soil and 0.1358 ppm in plant was found for highway on road at 0m distance. Conversely, the highest lead contents 0.0967 ppm in soil and 0.0652 ppm in plant was found for railway on road at 0m distance. Among two types of major transportation system railway pollution is smaller than highway and hence railway transportation system is environment friendly.

Effect of Automobile Related Lead Pollution on Spatio-Temporal Distribution of Biochemical Attributes Along Roadside Vegetation

“…Pb 2+ content in soil along the roadside in Nigeria was 26.7 mg kg -1 (Adedeji et al, 2013) (Khattak et al, 2013). Leaded gasoline is the main source of leaded pollution (Bhowmick et al, 2015).…”

The Examination for Pollution of the Soils due to Highways and Traffic

“…Otoyol kenarı topraklarında zaman içerisinde yoğun trafik akışı, meteorolojik koşullardan kaynaklı yol malzemesinin (asfalt/beton) aşınması, araç çeşitleri gibi faktörlerle ağır metal kirliliği gerçekleşmektedir (Şekil 5). [46], Çin [47], [48], Kore [49], Torino [50], Türkiye-Tekirdağ [51], Türkiye-Sakarya [52], Türkiye-Mardin [53], İran [54], Nijerya [55], Bangalore [56], Nijerya [57], Türkiye-Tekirdağ [58], Çin [59], İran [60], Abeokuta [61], Bangladeş [62], Hindistan [63], Suudi Arabistan [64], Kanada [65], Bangladeş [66], Nijerya [67], Hindistan [68] şeklinde literatürde yerini almıştır. Literatürde bazı çalışmalarda ise yol kenarında bulunan topraklarda trafikten kaynaklı ağır metal konsantrasyonları yol kenarındaki flora ve fauna üzerindeki seviyelerine ve etkilerine göre değerlendirilmiştir [69]- [73].…”