Background: Considering high importance of heavy metals residue from view point of food safety, this study was conducted to determine the contents of chromium (Cr), lead (Pb) and cadmium (Cd) in different tissues (liver, heart and muscle) of marketed chickens in Mashhad, Iran. Methods: Chicken tissues were collected from four popular brands distributed in different markets in Mashhad, fo...

Highway stormwater runoff represents a significant source of dissolved copper to surface 4 waters. It is well established that even low concentrations of dissolved copper can be toxic to many 5 aquatic organisms. In the Pacific Northwest of the United States, recent research has focused on the 6 effects of low-level copper exposure to salmonids listed as threatened or endangered under the 7 End...

background: considering high importance of heavy metals residue from view point of food safety, this study was conducted to determine the contents of chromium (cr), lead (pb) and cadmium (cd) in different tissues (liver, heart and muscle) of marketed chickens in mashhad, iran. methods: chicken tissues were collected from four popular brands distributed in different markets in mashhad, followed ...

A gasification plant may partially replace an industrial thermal and hydrogen production by polygenerating valuable products (hydrogen, power, steam) from low-value materials. Carbon energy analysis is one way of conceptually evaluating such processes. In this paper, the integration a heavy residue (HR) into mid-size oil refinery (5 million t per year crude processing rate) assessed via compari...

Urban areas typically have a high degree of impervious surfaces— that is, roads, parking lots, rooftops, and other surfaces that impede the movement of water into the soil. In predevelopment areas with natural ground cover, over half of precipitation infiltrates the soil to replenish groundwater tables, and only a small amount (10%) remains as runoff into stormwater systems, rivers, and lakes. ...

It is well known that compost can be polluted with heavy metals. A self-designed soil column system was used to clarify the leaching or residue of heavy metals when compost was added to red soil. Less than 4% of Cu and more than 58.3% of Zn were transferred to groundwater. Maximum concentrations of Cu and Zn in leachate were 22 and 246 microg/L, respectively. pH in leachate decreased during 6.7...

This paper evaluates the influence of crude oil (vacuum residue) properties, processing fluid catalytic cracking slurry oil, and recycle hydrocracked vacuum residue diluted with heavy cycle operating conditions H-Oil hydrocracking on quality liquid products. 36 cases operation a commercial H-Oil® ebullated bed hydrocracker were studied at different feed composition, conditions. Intercriteria an...

This study has evaluated the quality of combined sewer overflows (CSOs) in an urban watershed, such as Paris, by providing accurate data on the occurrence of priority pollutants (PPs) and additional substances, as well as on the significance of their concentrations in comparison with wastewater and stormwater. Of the 88 substances monitored, 49 PPs were detected, with most of these also being f...

In developing countries, rapid industrialization without environmental controls has resulted in heavy metal contamination of communities. We hypothesized that residential neighborhoods located near ore industries in three northern Mexican cities would be heavily polluted with multiple contaminants (arsenic, cadmium, and lead) and that these sites would be point sources for the heavy metals. To ...