US 2017/0282156 A1Published application

Extraction and determination of residual organic solvents in pharmaceutical products by spme method using a new nanocomposite fiber

OwnerAlireza Ghiasvand, Fatemeh Yazdankhah +2inventors

InventorsAlireza Ghiasvand, Fatemeh Yazdankhah, Kolsoum Nouriasl, Somayeh Hajipour

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Abstract

A stainless steel wire may be platinized using electrophoretic deposition (EPD) method and then may be coated by polyaniline/multiwalled carbon nanotube (PANI/MWCNT) nanocomposite by electrochemical polymerization (EP). The resulting fiber may be used for headspace solid-phase microextraction (HS-SPME) of residual solvents (benzene, toluene, ethylbenzene and xylene, BTEX) in commercial pharmaceutical drugs, followed by gas chromatography-flame ionization detection (GC-FID).

Claims15

Dependent claims

A method to synthesize polyaniline/multiwall carbon nanotube (PANI/MWCNT) nanocomposite comprising:

decanting MWCNT and aniline into an electrolyte solution to prepare a PANI/MWCNT nanocomposite sorbent;
coating a stainless-steel wire with platinum to create a substrate for coating the PANI/MWCNT nanocomposite sorbent thereon;
inserting the platinum coated stainless-steel wire into the electrolyte solution;
coating the platinum coated stainless-steel wire with the PANI/MWCNT nanocomposite sorbent by applying a voltage to the platinum coated stainless-steel wire.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 15/484,133Filed 11 Apr 2017
Priority: IR 139550140003000539 Apr 2016
Published: 5 Oct 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

B01J 20/28007
Sorbent size or size distribution, e.g. particle size: with size in the range 1-100 nanometers, e.g. nanosized particles, nanofibers, nanotubes,…
B01J 20/22
Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof:…
B01J 20/28023
Characterised by their form: fibres or filaments
B01J 20/3236
Inorganic material layers: containing metal, other than zeolites, e.g. oxides, hydroxides, sulphides or salts

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US 10,258,963 B2Related patent
US 2017/0282156 A1This patent

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