Hollow fiber supported liquid membrane coupled with high performance liquid chromatography for highly sensitive determination of bisphenols in environmental water samples

Abstract

Hollow fiber supported liquid membrane (HFSLM) was applied for the extraction of bisphenols (BPs), including bisphenol S, bisphenol AF, tetramethylbisphenol A, tetrachlorobisphenol A and tetrabromobisphenol A from water samples. The undecane solution of 1.0% (m/v) tri-n-octylphosphine oxide was supported on the pores of the polypropylene hollow fiber membranes (280 mm i.d., 50 mm wall thickness, 0.1 mm pore size, 60 cm length) to form a liquid membrane. The lumen of the hollow fiber membranes was then filled with 0.3 M NaOH as an acceptor to prepare the extraction device, which was placed into a 500 mL water sample (donor) adjusted to pH 4.0 with HCl. After shaking at 200 rpm for 180 min, the acceptor ($30 mL) was collected and injected into the high performance liquid chromatography system for the determination of the BPs. The proposed HFSLM method provided good enrichment factors (1370-2138), low detection limits (0.1- mg L À1) and good repeatability (RSD ¼ 2.6-8.8%, n ¼ 5). The proposed method was applied to determine the five target BPs in waste water, tap water, river water and lake water samples with satisfactory spiked recoveries (68.6% to 134%) at 0.5 and 1 mg L À1 spiking levels, demonstrating the practicality of the proposed method for the determination of BPs in environmental water samples.

Novel Potentiometric Screen-printed Carbon Electrodes for Bisphenol S Detection in Commercial Plastic Samples

“…Based on the increased production and use of BPS, it was used as a model organic pollutant, and many analytical procedures were introduced for its sensitive assay. These approaches include UV-spectrophotometry, 11 high-pressure liquid chromatography (HPLC) 12 and ultra performance/pressure liquid chromatography with mass spectrometric detection (UPLC-MS/MS). 13 Aside from their sensitivity, all of the preceding approaches have the disadvantages of expensive instrumentation, long experimental times, and the need for expertise personnel.…”

Polypyrrole‐coated alginate/magnetite nanoparticles composite sorbent for the extraction of endocrine‐disrupting compounds

“…Therefore, it is important to develop reliable, simple, rapid and highly sensitive methods for monitoring EDCs in environmental samples. Several chromatographic techniques have been reported for the determination of EDCs including HPLC , GC , and CE . However, the use of the GC technique usually requires a tedious derivatization process, while the CE techniques lack stability and sensitivity for real samples.…”

“…However, the amount of EDCs in water samples is relatively low and the matrices are often complex, thus, an effective sample preparation method involving pre‐concentration is normally essential as the first step for instrumental analysis. Several sample preparation techniques have been reported for the extraction and preconcentration of EDCs, such as dispersive liquid–liquid microextraction (DLLME) , hollow‐fiber‐based liquid‐phase microextraction (HF‐LPME) , stir bar sorptive extraction (SBSE) , SPME , and SPE . Among these methods, SPE is one of the most extensively used due to its ability to provide a high extraction capability and efficiency.…”