Evaluation of heavy metal and total petroleum hydrocarbon contamination of roadside surface soil

Wang

Science of The Total Environment

et al. 2015

137

• Cr, Zn, Cu, As, Cd, and Pb in soils along the highway are related to the traffic.• There are three distribution patterns of the traffic-related metals in soils.• Regional differences had significant relationship with the enrichment levels.• Cd was the prior metal and the TTH was the key area for soil environment monitoring. The road transportation could affect roadside soils environment detrimentally, including heavy metal enrichment. In order to identify and evaluate the enrichment of heavy metals resulted from road transportation on the Tibetan Plateau, the 11 heavy metals (V, Cr, Co, Ni, Cu, Zn, As, Cd, Rb, Pb and Tl) in the topsoil (0-10 cm depth) from four sites along the Qinghai-Tibet highway were discussed in this study. Our results indicate that heavy metals such as Cr, Cu, Zn, As, Cd and Pb are related to road transportation. The content of most of these heavy metals in roadside soils decreased exponentially with the distance from the road, as did some of the Nemero Synthesis Indexes (PN values). The contamination factor for the traffic-related metals ranged from 0.56 (no pollution) to 5.67 (considerable pollution) and the Nemero Synthesis Indexes of these heavy metals ranged from 0.80 (no pollution) to 4.49 (severe pollution). Cd was of priority concern as it had the highest contamination factor. The highest PN value for these traffic-related heavy metals was found in soils at site TTH (alpine steppe). Although transportation contributed to the high contents of these traffic-related metals in roadside environments, regional differences such as wind and the terrain also had significant relationship with their enrichment in these roadside soils. The roadside distance at which there is a potential risk to livestock and wildlife from the contamination of soils by heavy metals should be determined scientifically along the Qinghai-Tibet highway, based on the different natural environments found in the region. a b s t r a c t a r t i c l e i n f o

Section: Introductionmentioning

confidence: 99%

Identification of traffic-related metals and the effects of different environments on their enrichment in roadside soils along the Qinghai–Tibet highway

Wang

Science of The Total Environment

et al. 2015

137

“…The results revealed that the non-point source of heavy metal contamination is from vehicular traffic while the unregulated incineration and dumping sites of hazardous waste material along the highway were also responsible for point source contaminations. Further research by Khan and Kathi (2014) on heavy metal and petroleum hydrocarbon contamination of roadside surface soil from a site in close proximity to automobile repair workshop and agricultural field revealed that sampling sites in the proximity to automobile workshops were considerably polluted as compared to soil from agricultural fields along highways. This suggests a direct influence of anthropogenic activities on levels of contamination.…”

Section: *Corresponding Authormentioning

confidence: 98%

The Impact of Cassava Wastewater from Starch Processing Industry on Surrounding Soil: A Case Study of Matna Foods Industry, Ogbese

Adewumi¹,

Babatola²,

Olayanju³

2016

FUOYEJET

This study is aimed at determining the impacts of indiscriminate disposal of processed cassava wastewater into the environment by determining the physicochemical characteristics of the wastewater and soil characteristics within the vicinity of starch processing industry.The cassava wastewaterquality wastested in accordance with the standard methods for the examination of water and wastewater while soil samples was analysed using Atomic Absorption Spectrometer. The result of cassava wastewatershows that the effluent is acidic with pH of 3.8 and high conductivity of 6500µΩ. The cyanide content is also very high with 0.17mg/l as compared to 0.05mg/l recommended by WHO. The total solid, total dissolved solid and total suspended solid are also in high range of 20619, 17048 and 3571 mg/l respectively. Its hardness is 812mg/l, chloride 2516mg/l and nitrate 470mg/l. The dissolved oxygen was not detected while COD and BOD were also on the high side with values of 560 and 1410mg/l respectively. The results of soil analysis indicates that the cyanide concentration is high at the surface but reduces with depth. The pH is also in acidic range. However, Magnesium, Sodium, Sulphate, Zinc, Chromium, Vanadium, Europium and Rubidium were not detected in the soil samples. The percentage of calcium, potassium, copper, manganese and titanium were small and varying between 0.07 and 6.37ppm. Three unlined aerobic ponds provided for the treatment of cassava wastewater reduces the pollution strength of the wastewater but the untreated wastewater interfere with the surrounding soil during conveyance to the pond as well as pond environment.It is recommended that the wastewater conveyance and ponds should be well designed to prevent interference with the surrounding soil.

“…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].…”

Section: Ağır Metallerin çEvreye Ve Insan Sağlığına Etkileriunclassified

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

Çelebi¹,

Gök²

2018

Pamukkale J Eng Sci

Ülkemizde gelişmekte olan illerde nüfus artışına bağlı olarak araç sayısında ve trafikte yoğunluklar her geçen gün artmaktadır. Bu durum sosyo-ekonomik açıdan gelişme olarak değerlendirilse de çevreye (toprak-su-hava) olumsuz ekolojik etkileri olmaktadır. Otoyollar, şehirlerde yapılan önemli ve bir o kadar da gerekli mühendislik yapılarındandırlar. Özellikle şehirleri birbirine bağlayarak sosyoekonomik ve diğer alanlarda etkili bir konuma sahiptirler. Günümüzde artan otoyol taşımacılığı, hızlı şehirleşme ve artan araç sayısı trafikten kaynaklı ağır metal kirliliğini önemli bir konu haline getirmiştir. Toprakların ağır metaller ile yüksek oranda kirlenmeleri otoyollara yakınlıklarından kaynaklanmaktadır. Bu nedenlerle toprağa ulaşan ağır metallerin topraktan uzaklaştırılmasının zor olması nedeniyle toprak kirliliği önemli bir çevre sorunu olarak karşımıza çıkmaktadır. Bu çalışmada otoyol kenarlarında yer alan toprakların kirlilik durumu üzerine yapılan çalışmalar, kirleticilerin kaynakları ve dağılımı incelenmiştir.In the developing provinces of our country, the traffic jam and the number of vehicles gradually increased over day, which is related to the population growth. This situation could be identified as the socioeconomic development. However, it led to negative effects on soil-waterair. Highways are important and necessary engineering structures in the cities, which connect different cities and have an important effect on the socio-economic development and other areas. Today, because of increasing highway transport, the rapid urbanization and higher number of vehicles, heavy metal pollution of traffic become an important issue. For that reason, in these places soil pollution level is an important environmental problem, as it is difficult to remove heavy metals from the soil. Soils are close to the highways, leading to higher level of pollution due to heavy metals. This study examines previous researches on the pollution of lands, sources and distribution of pollutants which are located close to the highways.