عنوان مجله
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POLYCYCLIC AROMATIC COMPOUNDS
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چکیده
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Preparation coating materials is a fundamental point in solid-phase microextraction
(SPME) fiber fabrications. So, a hydrothermal approach was developed
for fabricating 3D hierarchically molybdenum disulfide/layered double
hydroxide on anodized HB pencil lead, Nanosheets of a porous molybdenum
disulfide and layered double hydroxide were directionally arranged on anodized
HB pencil lead and used as a fiber coating for selectively analysis of
polycyclic aromatic compounds (PAHs) by headspace SPME method. The assynthesized
materials were characterized by thermal gravimetric analysis,
scanning electron microscopy, and energy-dispersive X-ray spectroscopy,
According to the results, this coating indicated considerable potential due to
extracting trace amounts of some carcinogenic polycyclic aromatic compounds
in water samples. The essential parameters such as extraction time,
extraction temperature, agitation speed, and ionic strength of sample that
mainly affect the adsorption process were optimized and in optimum values,
the repeatabilities for one fiber were between 4.6% and 9.1% for the test
compounds were achieved. The studied compounds were assessed within
the detection limits as follows: 0.028 to 0.42 ngL1.
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