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Volume 9, No. 2, June 2014, Shaa’ban 1435 H

Articles

 

 

Heavy Metal Content and Health Risk of Potato and Corn Chips Being Sold in Jordanian Market

This study was carried out to investigate the heavy metal contaminants (cadmium, lead, copper, zinc, manganese and iron) found in potato and corn chips being sold in Jordanian market, and to estimate their health risk on consumers. The reason behind this study was that potato and corn chips are widely consumed by most children over the world. Atomic Absorption Spectrometry was used to measure the levels of metals after wet digestion, then the dietary intake of each heavy metal was estimated based on means of chips intake by Jordanian children. Also, the level of risk found in this study was evaluated with respect to the value of Minimal Risk Level. From this study, the level of copper, zinc, iron and manganese were below the recommended tolerable levels proposed by Minimal Risk Level. In Contrast, there are some risks in some kinds of chips because they have high levels of cadmium and lead.

 

Qasem M. Jaradat, Amer Tarawneh

JJC, 2014, 9(2), 69-80

Synthesis of an Organic Chelate Doped Sol Gel Filter to

Remove Cu(II) Ions from Aqueous Solutions

 

 

 

 

Mohammed Zaitoun, Kamal Momani, Qasim Jaradat, Idrees Momani, Ibrahim Qurashi

JJC, 2014, 9(2), 81-96

Tungsten-Titanium pillared clay catalyst: Preparation, characterization and catalytic activity

Tungsten-Titanium pillared clay (WTi-PILC) and sulfated-Titanium pillared clay (STi-PILC) were tested as catalysts for the n-hexane isomerisation which is a key reaction in the petroleum industry aimed at increasing the octane number of the gasoline pool. The WTi-PILC catalyst displays the highest selectivity towards mono-ramified isomers products. Methyl pentanes are the n-hexane isomers formed in major proportion while the Di-methyl butanes are the minor products. The results showed that the surface acidity was not the only key factor for n-hexane isomerisation over the pillared clays. Besides the surface acidity, the efficiency of these catalysts is also related to their good structure, texture, porosity and the high stability of the acid sites under hydrogen atmosphere.

 

 

Wiem Ferjani, Lilia K. Boudali

JJC, 2014, 9(2), 97-109

Dinuclear Transition Metal Complexes Consisting of an α-Diimine Complex Unit and a Half Sandwich Complex Unit as Dual Site Catalysts for the Polymerization of Ethylene

3

 

 

Haif Alshammari, Helmut G. Alt

JJC, 2014, 9(2), 110-126

One-Pot Synthesis of 2-Alkyl/arylamino-6-chlorothieno[3,2-e]-1,3-thiazin-4-one

2-Alkyl/arylamino-6-chlorothieno[3,2-e]-1,3-thiazin-3-one derivatives were prepared in one-pot synthesis by refluxing alky/arylisothiocyanates and 2,5-dichloro-3-thiophene-carboxamide.

 

 

 

Rajab Abu-El-Halawa, Imad Elddin Haj Elhussin, Mahmoud Al-Refai, Mohammad Ibrahim

JJC, 2014, 9(2), 127-133

Combustion and Emission Characteristics of Straight Vegetable Oils and Diesel Fuel Blends

An experimental investigation was carried out to evaluate the performance and emission characteristics of vegetable oils blends with diesel oil as an alternative fuel. Virgin and waste frying vegetable oils of sunflower, corn, soybean and palm oils were collected and characterized with GC-FID. Nine blends of various vegetable oils and diesel were prepared. The important chemical and physical properties of the blends (including kinematic viscosity, heat of combustion, exhaust emissions (SOx and NOx), flash point, pour point, cloud point, sulfur content, density and specific gravity) were compared to those of diesel oil. Generally, there is no significant difference between the use of waste or virgin vegetable oils blends with diesel oil.

 

 

Omar F. Bashir, Fawwaz I. Khalili, Bassam A. Sweileh

JJC, 2014, 9(2), 134-147