Validation of a QuEChERS method for extraction of estrogens from a complex water matrix and quantitation via high-performance liquid chromatography-mass spectrometry

Determination of benzophenone derivatives in wastewater by GC–MS/MS combined with in‐port derivatization

“…An MF value <100 shows ion suppression, whereas >100 expresses ion enhancement. [ 54 ] Matrix effect factors were calculated for each analyte, and it resulted between MF:84 and MF:742 (Table 4). Thus, the matrix‐match calibration curve approach helps overcome the matrix effect.…”

Green sample preparation methods in the environmental monitoring of aquatic organic pollutants

“…QuEChERS has also been used to determine estrogens in aquaculture influent water, whereby a 500fold concentration factor (initial sample volume of 20 mL and final extract volume of 40 µL) was required to allow for quantitation at ng L -1 levels by HPLC-MS [44]. Steps involving evaporation to dryness have energy consumption disadvantages, however the method avoided filtration with associated analyte losses which is needed for SPE of this matrix.…”

A light-operated dual-mode method for neuroblastoma diagnosis based on a Tb-MOF: from biometabolite detection to logic devices

“…Thus, exploring biosensors with ultrasensitive and robust responses to tiny changes in target concentrations is highly desirable for accurate diagnosis. In this respect, numerous methods, such as electrochemical, [11][12][13] gas chromatography-mass spectrometry (GC-MS), [14][15][16] high performance liquid chromatography coupled with electrochemical detection (HPLC-ECD) 17 and liquid chromatography-mass spectrometry (LC-MS) [18][19][20] have been developed to detect VMA levels. Nonetheless, these platforms still exist some intrinsic limitations: (1) Cumbersome sample preparation, long analysis time and susceptible to interference.…”