In this study, we investigated the potential of palladium tetrakis (imidazole) phthalocyanine (PdPc(Imz)4) for use as an organic semiconductor improving photovoltaic performance. order to get more information about prevailing model conduction mechanism (correlated barrier hopping (CBH)) PdPc(Imz)4, electrical impedance measurements were performed at different temperatures and obtained data simulated by Kohlraush Williams Watt (KWW) approach. Theoretical studies (density functional theory...

In this work, the optical properties of tetra(imidazole) palladium phthalocyanine (PdPc(Im)4) in solution form and thin films on glass fluorine-doped tin oxide (FTO) substrates were investigated via thermal evaporation technique. The band gap was evaluated by ultraviolet-visible spectroscopy (UV-Vis). energy values determined based Tauc graph. addition, time-dependent density functional theory (TD-DFT) used to simulate UV-Vis absorption spectrum molecule Dimethyl Sulfoxide (DMSO) phase. A...

In this study, a series of new metal phthalocyanines with imidazole function MPc(Imz) (M: Cd, Hg, Zn and Pd) were synthesized to improve the photocatalyst performances. All physical properties such as total energy, HOMO, LUMO energies MPc(Imz), well their vibrational frequencies have been determined by DFT method using B3LYP theory level at 6-311G (d, p) sdd basis set. The gap energy between work (WF) ITO PdPc(Imdz) was 1.53 eV represents highest barrier beneficial electron injection...

Biosorbent materials represent an interesting alternative to classic methods of metal removal from industrial effluents. Acacia biomass showed a higher absorption capacity for heavy metals than living biomass. This study aimed evaluate the bioadsorption Lead and Cadmium onto Gummifera gum, using batch experiment. The structural characterization biosorbent was carried out FT-IR, SEM, BET, TGA DSC analysis. adsorption equilibrium reached within 15 min. A maximum uptake 18.3 mg.g−1 Pb2+ 9.57...

4-Vinylpyridine molecularly imprinted polymer (4-VPMIP) microparticles for mandelic acid (MA) metabolite as a major biomarker of exposure to styrene (S) were synthesized by bulk polymerization with noncovalent approach. A common mole ratio 1:4:20 (i.e., template: functional monomer: cross-linking agent, respectively) was applied allow the selective solid-phase extraction MA in urine sample followed high-performance liquid chromatography-diode array detection (HPLC-DAD). In this research,...

Abstract: Occupational exposure biological monitoring techniques were applied for the diagnosis of inhalation abuse and evaluation levels to benzene, toluene, ethylbenzene, xylenes, n ‐hexane, in 44 Tunisian adolescents children suspected volatile substance addiction. Urinary trans,trans ‐muconic acid, hippuric acid (HA), mandelic methylhippuric acids determinations performed by high performance liquid chromatography with a photodiode array detector, urinary o ‐cresol ( ‐Cr) 2,5‐hexanedione...

To monitor benzene exposure and to check reliability of urinary trans,trans-Muconic Acid (t,t-MA) as a bio-marker in local conditions, study was conducted on 30 Tunisian exposed workers (20 tanker fillers 10 filling station attendants). The analyses were carried out environmental air t,t-MA before (t,t-MAA) at the end work shift (t,t-MAB). 20 nonoccupationally subjects also investigated. average value concentration 0.17 ppm. differences between t,t-MAA t,t-MAB concentrations measured...

The aim of this study was to determine whether endemic coral fish commonly consumed by Jeddah residents could serve as bioindicators oil contamination. In addition, we planned investigate the relationship between amino acid changes and hydrocarbon concentrations in tissue. composition acids analyzed using high-pressure liquid chromatography with precolumn derivatization. An analytical polycyclic aromatic hydrocarbons total petroleum conducted combining gas chromatography/mass spectrometry....

Deodorization of vegetable oils may introduce potentially carcinogenic, as well genotoxic contaminants, generating health risks for consumers. However, the deodorization step refining process leads to formation 3-monochloro-1,2-propanediol (3-MCPD). 3-MCPD has been classified carcinogenic humans by World Health Organization (WHO). The purpose this study was optimize recently updated oil treatment techniques using Instant Controlled Pressure Drop (DIC) improve elimination in edible palm oil....

Hexavalent chromium Cr(VI) is a well-established carcinogen associated with lung, nasal, and sinus cancer. threshold limit values in workroom air have been recently lowered. Consequently, the currently available analytical methods are insufficiently sensitive or high cost. In this paper, simple, cost-effective, sensitive, reproducible method using solid-phase extraction electrothermal atomic absorption spectrometry for determination of hexavalent airborne samples reported. The validation...

The aim of this study was to assess the exposure Toluene in paint industry and evaluate environmental biological monitoring techniques for assessment occupational aromatic hydrocarbon. In study, personal active passive air sampling toluene measurements, blood urine respectively B-Tol HA or U-Tol analyses eight workers from two thinner production factories were collected during four successive working days. Correlations analyzed between indicators levels. concentration measured samples ranged...

Styrene, a chemical widely used in various industries, undergoes metabolic breakdown the human body, resulting production of phenylglyoxylic acid (PGA). A novel molecularly imprinted polymer (MIP) was synthesised for selective extraction and enrichment PGA urine samples prior to high-performance liquid chromatography. The MIP employed this research 4-vinylpyridine (4-VPMIP) prepared via mass polymerisation using noncovalent method. structural morphological characteristics polymers (MIPs)...

Throughout the vegetable oil industry, there is a focus on eradicating volatile molecules affecting aroma or taste of crude oil, whether it natural derived from extraction process. Refining aims to reduce these compounds level acceptable consumer. In addition, famous conventional operation deodorization calls for high levels temperature depending boiling point used remove atmospheric pressure each molecule. The process implies vacuum between 10 80 kPa absolute pressure, generally 190 and 240...

We wish to determine the urinary trans,trans-muconic acid reference values in Tunisian general population, and evaluate impact of several factors (age, gender, tobacco...) on these values. Urine samples were collected from 182 healthy subjects who had not been occupationally exposed benzene. This determination was performed by solid phase extraction sampling technique together with high performance liquid chromatography-photodiode array detector. Trans,trans-muconic ranged 0.003 0.618 mg/g...

Abstract A simple, sensitive, and reproducible high performance liquid chromatographic procedure is described for the simultaneous determination of urinary metabolites several aromatic hydrocarbons: mandelic phenylglyoxylic acids from ethylbenzene; hippuric acid toluene, methylhippuric xylenes. The employed mobile phase conditions allowed relatively low detection limits (0.1 to 0.2 mg/L). method was tested on 33 workers in paint industry nonoccupationally exposed Tunisian subjects....

Fouling and biofouling remain significant challenges in seawater desalination plants. One practical approach to address these issues is develop anti-biofouling membranes. Therefore, novel hybrid zinc phthalocyanine/polyvinylidene fluoride-co-hexafluoropropylene (Zn(4-PPOx)4Pc/PVDF-HFP) membranes were prepared by electrospinning evaluate their properties against biofouling. The nanofiber membrane was characterized atomic force microscopy (AFM), attenuated total reflectance-Fourier transform...

In this study, a novel technique is introduced that involves the combination of an ion-imprinted polymer and solid-phase extraction to selectively adsorb lithium ions from reverse osmosis brine. process synthesizing polymers, phthalocyanine acrylate acted as functional monomer responsible for chelation. The structural morphological characteristics molecularly imprinted polymers non-imprinted were assessed using Fourier transform infrared spectroscopy scanning electron microscopy. adsorption...

In the male rat a diet rich in beef fat facilitates occurrence of hyper-insulinemia after glucose load whereas fats linoleic acid produce no such effect. The combination saturated and saccharose hyper-triglyceridemia rat, effect is produced by saccharose. Linoleic prevents natrium chloride from provoking hypertriglyceridemia female rats subjected to enriched fat. Estrogen-induced castrated animals strongly inhibited if acid. Physical effort can prevent combined with inducing hypertriglyceridemia.