Ministry of Industrial and Minerals

Baghdad, Iraq

Ministry of Industrial and Minerals

Baghdad, Iraq
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Abid F.M.,Medical and Pharmaceutical Research Center | Salman J.M.,Ministry of Industrial and Minerals
Asian Journal of Chemistry | Year: 2012

Efficient liquid chromatographic method by employing o-phthaldehyde derivative for separation of biogenic amines e.g., (1) histamine, (2) tyramine, (3) tryptamine, (4) putrescine, (5) 2-phenylethylamine, (6) cadaverine, (7) 1,7-diaminoheptane in aqueous extract from imported fish and meat products available in Iraq markets. The fish and meat samples were extracted by using 8 % trichloroacetic acid, the aqueous solution were purified by passing through disposable filter paper 0.45 μm pore diameter. The aqueous solutions were preconcentration using rotary evaporator reaching adjusted volume of 2 mL. 20 μL was injected on HPLC ISC07/5/504Na (100 × 4.6 mm Id) column, mobile phase 0.6 N sodium citrate + 0.1 M boric acid, (pH 10) the eluted peak were detected by using pre-column o-phthaldehyde derivative. The concentrations of biogenic amines were determined by comparison the peak area of the sample with that of authentic standard. In this work, HPLC method was applied for measurements of most biogenic primary amine by using pre-column o-dialdehyde (OPA) derivative, to form high sensitive isoindole derivative of all amines. These derivatives gave low detection limit of 2 ng/mL. The results observed relatively high concentration of biogenic amine in imported fish and meats products due to manufacturer source and unsuitable storage method.


Palm oil fronds were used to prepare activated carbon using the physiochemical activation method, which consisted of potassium hydroxide (KOH) treatment and carbon dioxide (CO2) gasification. The effects of variable parameters activation temperature, activation time and chemical impregnation ratios (KOH: char by weight) on the preparation of the activated carbon and for the removal of pesticides: bentazon, carbofuran and 2,4-Dichlorophenoxyacetic acid (2,4-D) were investigated. Based on the central composite design (CCD), two factor interaction (2FI) and quadratic models were respectively employed to correlate the effect of variable parameters on the preparation of activated carbon used for the removal of pesticides with carbon yield. From the analysis of variance (ANOVA), the most influential factor on each experimental design response was identified. The optimum conditions for preparing the activated carbon from oil palm fronds were found as follows: activation temperature of 750°C, activation time of 2h and chemical impregnation ratio of 2.38. The percentage error between predicted and experimental results for the removal of bentazon, carbofuran and 2,4-D were 8.2, 1.3 and 9.2%, respectively and for the yield of the palm oil frond activated carbon was 5.6. © 2013.


Salman J.M.,Ministry of Industrial and Minerals | Abid F.M.,Ministry of Science and Technology
Water Science and Technology | Year: 2013

Palm-date pits were used to prepare activated carbon by physiochemical activation method, which consisted of potassium hydroxide (KOH) treatment and carbon dioxide (CO2) gasification. The effects of variable parameters, activation temperature, activation time and chemical impregnation ratios (KOH: char by weight) on the preparation of activated carbon and for removal of pesticides: bentazon, carbofuran and 2,4-dichlorophenoxyacetic acid (2,4-D) were investigated. Based on the central composite design (CCD), two factor interaction (2FI) and quadratic models were respectively employed to correlate the effect of variable parameters on the preparation of activated carbon used for removal of pesticides with carbon yield. From the analysis of variance (ANOVA), the most influential factor on each experimental design response was identified. The optimum conditions for preparing activated carbon from palm-date pits were found to be: activation temperature of 850 WC, activation time of 3 h and chemical impregnation ratio of 3.75, which resulted in an activated carbon yield of 19.5% and bentazon, carbofuran, and 2,4-D removal of 84, 83, and 93%, respectively. © IWA Publishing 2013.


Salman J.M.,Ministry of Industrial and Minerals | Mohammed M.J.,Ministry of Industrial and Minerals
Desalination and Water Treatment | Year: 2013

The adsorption of herbicide bentazon from aqueous solution onto branches of pomegranates trees activated carbon (BPTAC) was investigated through batch study. The effects of both initial concentration and pH of the bentazon over the range of 25-250 mg/L and 2-12, respectively, on the adsorption of the prepared BPTAC were studied in batch experiments. Equilibrium data were fitted to the Langmuir, the Freundlich and the Temkin isotherm models. The results obtained from application of these models show that the best fits were achieved with the Langmuir model and a maximum monolayer adsorption capacity of 80 mg/g was obtained at 30°C. The regeneration efficiency of spent activated carbon was studied and it was found to be 92-96%. The results indicated that BPTAC has good capability as adsorbent for the removal of bentazon from aqueous solutions. © 2013 Copyright Balaban Desalination Publications.

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