APPLICATION OF ULTRASONIC-ASSISTED EMULSIFICATION MICRO EXTRACTION COMBINED WITH GAS CHROMATOGRAPHY-FLAME IONIZATION DETECTOR (USAEME-GC-FID) FOR DETECTION TRACE MONONITROTOLUENES IN REAL WATER SAMPLES

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SERESHTI HASSAN; ENTEZARI HERAVI YEGANEH; EBRAHIMI FATEMEH; TOGHIANI REYHANEH; KHOJEH VAHID

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Seminar: IRANIAN BIENNIAL CHEMOMETRICS SEMINAR
Year:2011 | Issue:3

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Title

APPLICATION OF ULTRASONIC-ASSISTED EMULSIFICATION MICRO EXTRACTION COMBINED WITH GAS CHROMATOGRAPHY-FLAME IONIZATION DETECTOR (USAEME-GC-FID) FOR DETECTION TRACE MONONITROTOLUENES IN REAL WATER SAMPLES

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Abstract

A SIMPLE, RELIABLE AND ENVIRONMENTAL FRIENDLY ULTRASONIC-ASSISTED EMULSIFICATION MICRO EXTRACTION (USAEME) FOLLOWED BY GAS CHROMATOGRAPHY-FLAME IONIZATION DETECTOR (GC-FID) WAS PROPOSED TO DETERMINE TRACE AMOUNTS OF MONONITROTOLUENES (MNTS) COMPOUNDS IN WATER SAMPLES. CARBON TETRACHLORIDE WAS SELECTED AS EXTRACTION SOLVENT IN THIS WORK. EFFECT OF EXTRACTION TEMPERATURE, VOLUME OF EXTRACTION SOLVENT, SONICATION TIME AND SALT CONCENTRATION ON THE EXTRACTION EFFICIENCY WERE OPTIMIZED BY FRACTIONAL CENTRAL COMPOSITE DESIGN (CCD) [1]. DIRECT ANALYSIS OF MNTS IN WATER SAMPLES FOR THEIR TRACE AMOUNTS IS NOT POSSIBLE. SO, AN EFFICIENT SAMPLE PRECONCENTRATION STEP IS REQUIRED AND IS USUALLY NECESSARY BEFORE THE FINAL ANALYSIS OF MNTS. MANY SAMPLE PREPARATION TECHNIQUES SUCH AS LIQUID–LIQUID EXTRACTION (LLE) [2], SOLID-PHASE EXTRACTION (SPE) [3] AND CLOUD POINT EXTRACTION (CPE) [4] HAVE BEEN DEVELOPED FOR THIS PURPOSE. IN 2008, NEW MICRO EXTRACTION TECHNIQUE, ULTRASOUND-ASSISTED EMULSIFICATION MICRO EXTRACTION (USAEME) HAS BEEN DEVELOPED BY REGUEIRO ET AL [5]. TO THE BEST OF OUR KNOWLEDGE, NO STUDIES FOR USAEME OF MNTS FROM WATER SAMPLES HAVE BEEN REPORTED. THEREFORE, IN THE PRESENT STUDY, USAEME WAS USED TO EXTRACT MNTS FROM WATER AND DETERMINATIONS WERE THEN CARRIED OUT BY GAS CHROMATOGRAPHY FLAME IONIZATION DETECTOR (GC-FID). SOME IMPORTANT USAEME PARAMETERS, SUCH AS: TYPE AND VOLUME OF EXTRACTION SOLVENT, SONICATION TIME, TEMPERATURE AND SALT CONCENTRATION WERE INVESTIGATED AND OPTIMIZED BY CENTRAL COMPOSITE DESIGN. UNDER THE OPTIMUM CONDITION, THE LIMITS OF DETECTION (LODS) FOR O-MNT, M-MNT AND P-MNT WERE BETWEEN (0.05-0.11) MG L-1. GOOD LINEAR DYNAMIC RANGES (LDRS) WERE OBTAINED FOR ALL ANALYTES IN A RANGE OF 0.15-1000 MG L-1 THE CORRELATION COEFFICIENT (R2) WAS HIGHER THAN 0.998. FINALLY, THE DEVELOPED METHOD WAS SUCCESSFULLY APPLIED TO EXTRACTION AND DETERMINATION OF THE MNTS IN THE TAP, POND AND AQUEDUCT WATER SAMPLES AND SATISFACTORY RESULTS WERE OBTAINED 96.22-104.79%.

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APA: Copy

SERESHTI, HASSAN, ENTEZARI HERAVI, YEGANEH, EBRAHIMI, FATEMEH, TOGHIANI, REYHANEH, & KHOJEH, VAHID. (2011). APPLICATION OF ULTRASONIC-ASSISTED EMULSIFICATION MICRO EXTRACTION COMBINED WITH GAS CHROMATOGRAPHY-FLAME IONIZATION DETECTOR (USAEME-GC-FID) FOR DETECTION TRACE MONONITROTOLUENES IN REAL WATER SAMPLES. IRANIAN BIENNIAL CHEMOMETRICS SEMINAR. SID. https://sid.ir/paper/909370/en

Vancouver: Copy

SERESHTI HASSAN, ENTEZARI HERAVI YEGANEH, EBRAHIMI FATEMEH, TOGHIANI REYHANEH, KHOJEH VAHID. APPLICATION OF ULTRASONIC-ASSISTED EMULSIFICATION MICRO EXTRACTION COMBINED WITH GAS CHROMATOGRAPHY-FLAME IONIZATION DETECTOR (USAEME-GC-FID) FOR DETECTION TRACE MONONITROTOLUENES IN REAL WATER SAMPLES. 2011. Available from: https://sid.ir/paper/909370/en

IEEE: Copy

HASSAN SERESHTI, YEGANEH ENTEZARI HERAVI, FATEMEH EBRAHIMI, REYHANEH TOGHIANI, and VAHID KHOJEH, “APPLICATION OF ULTRASONIC-ASSISTED EMULSIFICATION MICRO EXTRACTION COMBINED WITH GAS CHROMATOGRAPHY-FLAME IONIZATION DETECTOR (USAEME-GC-FID) FOR DETECTION TRACE MONONITROTOLUENES IN REAL WATER SAMPLES,” presented at the IRANIAN BIENNIAL CHEMOMETRICS SEMINAR. 2011, [Online]. Available: https://sid.ir/paper/909370/en

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