2022-11

4TH INTERNATIONAL CONFERENCE ON MATERIALS ENGINEERING & SCIENCE (IConMEAS 2021)

Safe quality of drinking water is a critical concern for human health. Bardarash is one of the districts of Duhok city located in the Kurdistan Region in the north part of Iraq and considered a rich area of oil resources. Groundwater wells are the main sources of drinking water in this area. To date, no study has focused on examining the quality of drinking water in Bardarash district. The aim of this study is to assess the physic-chemical quality of drinking water in this area. Water samples were collected from local wells (103) from four subjoined districts and analyzed for 10 heavy metals and physico-chemical parameters using atomic spectroscopy and standard methods. The results showed that most of the heavy metals and physico- chemical analysis values were below the permissible limits set by WHO, while few values were higher for Al, Fe, Cr, NO31- and TAL. The data also show significant variation (P<0.05) of the physico-chemical parameters and some heavy metals among four subjoined districts. It can be concluded that the water samples were not highly contaminated although water treatment with regular monitoring and periodic cleaning of domestic tanks is required to obtain sustainable clean drinking water in this area.

2018-10

International Conference on Advanced Science and Engineering 2018 (ICOASE2018) sponsored by IEEE Iraq Section

Participated as conference committee member

2018-08

The 1st International Conference on materials engineering & science (IConMEAS 2018)

Listener

2017-04

2nd INTERNATIONAL SCIENTIFIC CONFERENCE – UNIVERSITY OF ZAKHO

Heavy metal pollution in wastewater has always been a serious environmental problem. Chromium is considered one of the most noxious heavy metals. Adsorption is now reorganized as an alternative technology of defence for chromium removal because of cost effectiveness, local availability and technical feasibility. Potato peel powder was used as a low cost biosorbent in Zakho city to remove hexavalent chromium from aqueous solution under various operating conditions. The effect of different parameters such as contact time, initial metal ion concentration, potato peel dose, pH and temperature was investigated through a number of batch sorption experiments. Both the Langmuir and Freundlich were found to fit the adsorption isotherm of Cr (VI) onto potato peel. The Langmuir adsorption capacity was found to be 1.97 mg/g while Freundlich constants Kf and n were 1.57 and 2.5, respectively. The adsorption process can be described by the pseudo-first equation. The results revealed that potato peel is very effective for the biosorption of Cr (VI) from aqueous solutions.

2015-11

The First International SQU Chemistry Conference

Participated in a poster presentation

2013-10

The first conference to honour the graduating students sponsored by ministry of higher education in Iraq, October 2013, University of Baghdad, Iraq.

Participatant

2011-05

Modern Fungicides and Antifungal Compounds VI: Proceedings 16th International Reinhardsbrunn Symposium on Modern Fungicides and Antifungal Compounds

A simplified method based on soaking overnight extraction coupled to HPLC - UV analysis was developed for the simultaneous determination of the residue levels of the potato sprout inhibitor chlorpropham (CIPC) and its metabolite 3-chloroaniline (3CA) in potato samples. The method gave values approximately 25% higher when compared with a standard Soxhlet –GC method. The results of spiking different layers from the potato tuber showed a high recovery of CIPC (> 95%) in all layers but the recovery of its metabolite 3CA was lower than 50% in the pith and 5% in both cortex and skin.

2010-12

Third Scottish Postgraduate Symposium on Environmental Analytical Chemistry

In the UK potatoes destined for the processing and fresh pack sectors have to be stored for up to 9 months. To be able to supply potatoes of suitable quality throughout this period it is essential to hold the processing potatoes at temperatures of the order of 10 degrees centigrade. At such temperatures sprouting will occur thereby necessitating the use of a sprout suppressant treatment. The almost universal approach is to employ chlorpropham (CIPC) for this purpose. The application is generally made using a hot fogging technique whereby the fine particles of CIPC produced are distributed throughout the potato store. Several CIPC formulations are available which are aspirated into a stream of hot air at temperatures in excess of 450 oC. Applications may be repeated throughout the storage season. The total amount of chemical that can be applied is restricted to less than 63.75 mg/kg for potatoes destined for processing and 36 mg/kg for fresh pack potatoes. Difficulties are experienced with evenness of application of the chemical and making sure that the MRL value of 10mg/kg is not exceeded. Concerns have been expressed regarding the susceptibility of CIPC to breakdown at high temperatures. This is a particular concern where the application temperature exceeds 450 oC as the literature indicates that thermal breakdown of carbamates such as CIPC is highly likely. The main breakdown product 3-chloroaniline (3-CA) has been detected in store atmospheric samples collected shortly after thermal fogging. Claims have also been made that it is present on the treated potato samples although findings have been inconclusive to date. On investigating this it soon became clear that difficulties existed in developing a suitable analytical method for measuring 3-CA in potatoes The work reported here describes the development of a method for 3-CA determination in potatoes including the simultaneous measurement of CIPC.

2009-12

Second Scottish Postgraduate Symposium on Environmental Analytical Chemistry

Oral presentation

2008-12

First Scottish postgraduate symposium on environmental analytical chemistry, University of Glasgow, UK.

In the UK potatoes for processing into chips, crisps, etc, are stored for up to one year to ensure continuity of supply. To prevent sprouting in store, chemical sprout inhibitors are used. Dimethylnaphthalene (DMN) is current being best assessed for use. Validation of an HPLC methods an analytical technique for the measurement of 1, 4-dimehylnaphthalene with 2-methylnaphthalene as internal standard, required the assessment of the limit of detection (LOD) and limit of quantification (LOQ). This method will help determine the selection of good chromatographic conditions for the studying the behaviour of 1, 4-DMN in environmental samples. In this study, LOD and LOQ were measured using three different HPLC systems, two approaches were applied. The approaches are firstly by repeated injection (n=10) of a single low level standard solution (0.1 and 0.01 µg/ml) of 1, 4-DMN and 2-Methylnaphthalene into the three HPLC systems. The second approach was to determine the LOD and LOQ based upon the statistical data of the regression line of the calibration curve of 1,4-DMN and 2-Methylnaphthalene in the lower range concentrations0.02-0.1µg/ml. The approach of repeated injection of 0.01µg/ml was found to produce a lower LOD and LOQ compared to the calibration curve method by factors of 4 to 5. The diode array detector was less sensitive by a factor of approximately 4. The best system combining single wave length detector and autosampler injector gave values of LOD 0.001 µg/ml and LOQ 0.002 µg/ml for both 1, 4-DMN and 2-methylnaphthalene.