Determination of Isoflavones in Soybean Flour by Matrix Solid-Phase Dispersion Extraction and Liquid Chromatography with UV-Diode Array Detection

Simultaneous determination of 10 components in Bu-Zhong-Yi-Qi Wan by solid phase extraction-high performance liquid chromatography with diode array detection and evaporative light scattering detection.

An effective, accurate and reliable method for the simultaneous separation and determination of 10 major components in Chinese medicine Bu-Zhong-Yi-Qi Wan (BZYQW) was developed and validated using solid phase extraction column-high performance liquid chromatography-diode array detection-evaporative light scattering detection (SPE-HPLC-DAD-ELSD). The chromatographic separation was performed on a...

Determination of steroid sex hormones and related synthetic compounds considered as endocrine disrupters in water by fully automated on-line solid-phase extraction-liquid chromatography-diode array detection.

In this study, a procedure for the simultaneous determination in water of six estrogens (estradiol, estriol, estrone, ethynyl estradiol, mestranol, and diethylstilbestrol) and three progestogens (progesterone, norethindrone, and levonorgestrel), selected based on their abundance in the human body, their estrogenic potency, and the extent of their use in contraceptive pills, was developed. The p...

Determination of linezolid in human serum by reversed-phase high-performance liquid chromatography with ultraviolet and diode array detection.

A high-performance liquid chromatographic (HPLC) method with UV and DAD detection for the quantitative determination of linezolid in human serum was developed in present work. Chromatography was carried out by reversed-phase technique on a RP-18 column with a mobile phase composed of 50 mM phosphate buffer and acetonitrile (76 : 26, v/v), adjusted to pH 3.5 with orthophosphoric acid. Serum samp...

Extraction and Detection of Pentobarbital in Soil by Solid Phase Extraction and Liquid Chromatography / Mass Spectrometry

Comparison of Extraction Techniques by Matrix Solid Phase Dispersion and Liquid-Liquid for Screening 150 Pesticides from Soil, and Determination by Gas Chromatography

Interest in the determination and screening of pesticide residues in soil is caused by widespread use of chemical pesticides in agriculture, which increase soil contamination. Two extraction techniques, matrix solid phase dispersion (MSPD) and liquid-liquid extraction (LLE) of residual pesticides (acaricides, insecticides, herbicides, and fungicides) from soil were compared. Advantages and disa...