DLLME

AcronymDefinition
DLLMEDispersive Liquid–Liquid Microextraction (chemical analysis technique)
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DLLME technique has been developed and often used for the determination of organic compound in water samples.
In this study, two different methods of liquid-phase extraction (LLE, DLLME) and solid-phase extraction (Chromabond C18 ec, Chromabond HR-P, and SCX) were investigated for the extraction of interested PAAs, which were spiked in a 3% acetic acid as food simulant [15].
For cadmium determination DLLME has been coupled to different spectrometry detection techniques, such as atomic absorption (AAS), atomic fluorescence, inductively coupled plasma with optical emission (ICP-OES), and total reflection X-ray [7-11].
Extraction Detection Targets Recovery (%) method LLE (25 mL, LC-MS/MS TnBP, TEHP 80-94 DCM) SPE(HLB) LC-MS/MS TnBP, TEHP TnBP: 65-90 (>60min) TEHP: 50-70 SPE (HLB) GC-NPD TiBP, TnBP, (2000 mL TCEP, TCPP, 24-109 sample) TDCP, TBEP, TPhP, TEHP, and TPPO SPME (PDMS-DVB GC-NPD Ditto 26.7-119.2 fiber, 20 mL, 30 min) MA-HS-SPME GC-MS TnBP, TEHP 86-106 (PDMS-DVB) (SIM) fiber, 20 mL, 5 min SPME (IL-based GC-FPD TPrP, TnBP, 73.2-101.8 sol-gel TCEP, TCPP, fiber, 10 mL, TPhP, TEHP, 20-80 min) and TCrP MASE (3h) LC-MS/MS TnBP 100-112 DLLME (10 min) GC-NPD TnBP, TEHP TnBP: 94-104 TEHP: 40-114 SFO-DLLME LC-MS/MS TEP, TBP, TEP: 48-58, (8 mL, TCEP, 86-113 12 min) TBEP, TCPP, for others TTP, TPhP, and TEHP Extraction RSD (%) LOD (ng/L) Ref.
For example, a combination of solid phase microextraction with dispersive liquid-liquid microextraction [16] and the combination of electromembrane extraction with DLLME [17] have been reported.
Thus, our objective in this current work was to develop a sensitive and simple dispersive liquid-liquid microextraction (DLLME)/GC-MS method for the determination of six haloacetic acids in water matrix of several bottled and tap water sources.
The aim of the present study is to assess the suitability of DLLME technique combined with HPLC-UV for the determination of three synthetic antioxidants (BHA, BHT, and TBHQ).
In recent years, a rapid, simple, and convenient dispersive liquid-liquid microextraction (DLLME) [10] method has been proposed and then is rapidly applied to various drug extraction studies, especially in the field of pesticide extraction.
Thus, some microextraction methods such as solidphase microextraction (SPME) [26], stir bar sorptive extraction (SBSE) [6], liquid phase microextraction (LPME) [24], liquid-liquid-solid microextraction (LLSME) [13], and dispersive liquid-liquid microextraction (DLLME) [14, 18, 27] have been applied for extraction and preconcentration of triazines in water as alternative to the SPE techniques.
Solid-phase extraction (SPE) [9], solid-phase microextraction (SPME) [10], dispersive liquid-liquid microextraction (DLLME) [11], and cloud point extraction (CPE) [12, 13] are some of these methods [14].
The most commonly used methods are single drop microextraction (SDME) [7, 8], coprecipitation [9], solid phase microextraction (SPME) [10, 11], cloud point extraction (CPE) [12], dispersive liquid-liquid microextraction (DLLME) [13, 14], and solidified floating organic drop microextraction (SFODME) [15, 16].