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Remote Sensing And Image Interpretation

Statistics and Data Analysis in Geology

Über die Adsorption in Lösungen

Polycyclic Hydrocarbons Vol. 1. Pp. xxvi + 487. 126S. (With a chapter on carcinogenesis by Regina Schoental.) Vol. 2. Pp. lvii + 487. 140s. By E. Clar. (London and New York: Academic Press; Berlin: Springer-Verlag, 1964.)

Polycyclic Aromatic Hydrocarbons

Heavy metals in soils

In this study, pollution level, distribution, toxicity, molecular composition, probable sources as well as health risks of polycyclic aromatic hydrocarbons (PAHs) in urban and industrial soils of Kerman metropolis were investigated. Kerman is a fast-growing city and a fine example of an arid city in a developing country. For this purpose, concentrations of 16 individual PAHs in 30 samples taken from the city soils and its industrial zones were determined by gas chromatography/mass spectrometry. The ∑PAHs concentration in urban soil samples varied from 26.1 to 902.8 μg/kg, with the mean and median of 302.6 and 148.4 µg/kg, respectively. In comparison, ∑PAHs in industrial soils ranged from 26.8to 251.9 μg/kg, with the mean and median values of 65.9 and 42.9 µg/kg, respectively. Four-ring PAHs comprise the dominant compounds in urban soils, whereas, two- and three-ring PAHs proved to be the most abundant compounds in industrial soils. Source apportionment was conducted using ring classification, diagnostic ratios, PCA, and multilinear regression (MLR). Also, human health risk assessment was undertaken through employing US EPA standard statistical models. This survey revealed that PAH pollution in urban soils originates mainly from fossil fuel combustion and in industrial soils from petrogenic sources. On the whole, in the Kerman environment, the shares of petroleum combustion, natural gas combustion, and petrogenic sources were 45.32%, 34%, and 20.68% respectively. Based on this study, the ecological risk of PAHs was low-to-moderate, and incremental lifetime cancer risk for children and adults were 1.35 × 10−4 and 1.04 × 10−4 respectively, indicating rather high risks. 

https://figshare.com/articles/journal_contribution/Polycyclic_aromatic_hydrocarbons_in_urban_and_industrial_soils_of_Kerman_the_largest_city_in_southeast_of_Iran_status_source_apportionment_ecotoxicology_and_health_risk_assessment/20206908/1/files/36118119.pdf

Polycyclic aromatic hydrocarbons in urban and industrial soils of Kerman, the largest city in southeast of Iran: status, source apportionment, ecotoxicology, and health risk assessment

The Takab area in NW of Iran is an important gold mineralized region with a long history of gold mining. In this study ASTER data is used to evaluate environmental effects of gold mining. The results show that mining activities have resulted in release of potentially toxic metals (PTMs) in the area. Principal component analysis (PCA) of ASTER data is used to map sources of PTMs and their secondary hosts (iron oxides) through alteration mapping, The results show that selective PCA is a robust yet time consuming technique for alteration mapping. A color composite is created for finding common hydrothermally altered rocks. The created color composite successfully mapped the known deposits and anomalous areas identified by geological survey of Iran. Because of the low spatial resolution of ASTER sensor, the iron oxide mapping is restricted to the wider portions of the streams. Spectral analyses confirrn the presence of hematite and goethite in stream sediments. This is in accordance with measured pH values. Because of the calcareous hosts of deposits, acid mine drainage is not a concern.

Application of ASTER data in characterization of environmental pollution in Takab area, NW Iran

In Iran, almost all major travertine deposits with NW–SE trend are exposed in Urumieh-Dokhtar volcano-plutonic belt. In this study, morphology of travertine, source of CO2, and classification of travertine were investigated using geochemistry of carbon dioxide, stable carbon and oxygen isotopic analysis, SEM images and thin sections. Morphology of travertine in the study area includes mound and cascade. Stable carbon and oxygen isotope values of the north Urumieh-Dokhtar volcano-plutonic belt travertines range between 1.46 and 11.71‰ (VPDB) and − 6.08 and − 10.21‰ (VPDB), respectively. The high δ13C values suggest a contribution of CO2 liberated by thermometamorphic decarbonation besides its magmatic origin. Consequently, these travertines are classified as belonging to the thermogene category. A probable reason for the observed high carbon isotope composition in these deposits may be CO2 consumption as suggested by the presence of bacteria and diatom activities, verified by SEM images. Pisoid, crystalline crust and pebbly lithofacies were observed. The stable isotope compositions were compared to travertines around the world. Similarities in lithofacies and morphology exist between northern Urumieh-Dokhtar volcano-plutonic belt and travertines of Turkey and Spain. The Iranian travertines are located in areas with volcanic activity. Obviously, the geothermal system remained active throughout the late Quaternary to present.

Farid Moore

Papers

Polycyclic aromatic hydrocarbons in urban and industrial soils of Kerman, the largest city in southeast of Iran: status, source apportionment, ecotoxicology, and health risk assessment

Application of ASTER data in characterization of environmental pollution in Takab area, NW Iran

Stable isotope geochemistry of travertines from northern Urumieh-Dokhtar volcano-plutonic belt, Iran

Microplastics in aquatic species of Anzali wetland: An important freshwater biodiversity hotspot in Iran.

Microplastic occurrence in selected aquatic species of the Persian Gulf: No evidence of trophic transfer or effect of diet.