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The analytical protocols were developed and tested for simultaneous determining three groups of antibiotics including four fluoroquinolones (FQs), three tetracyclines (TCs) and eleven sulfonamides (SAs), in water and soil samples. Solid phase extraction (SPE) was used to enrich and to clean up the aqueous samples. The potassium phosphate buffer and acetonitrile mixture solutions were used to extract...
By improving chromatographic resolution and Mass Spectrometry scanning method, an isotope dilution method which can detect Naphthalene, Acenaphthene, Phenanthrene and Chrysene in water samples is established. Compared with Liquid-liquid Extraction, double Purification of solid phase extraction column and Silica Gel Column is more suitable for large volume injection. Their retention behavior of solid...
This paper describes a simple and sensitive method for determining estrogen (E1), ??-estradiol (E2), estriol (E3), 17??-ethynylestradiol (EE2), diethylstilbestrol (DES), 4-tert-octyphenol (OP), 4-n-nonylphenol (NP), nonylphenol mono- to di-ethoxylates (NP1EO, NP2EO), bisphenol A (BPA) in water samples of Songhua River in China. The survey was preceded by selecting extraction methods, clean-up procedures...
Solid phase extraction (SPE)/high performance liquid chromatography (HPLC) was employed to simultaneously determine 13 kinds of interested endocrine disrupting chemicals (EDCs) in the wastewater taken from a sewage treatment plant (STP) of Harbin, China. Results show that the concentrations of estriol, estrone, dimethyl phthalate (DMP) and 4-tert-octylphenol (4-J-OP) increase in the primary sedimentation...
As fungicides or preservatives in pharmaceutical and personal care products (PPCPs), triclosan (TCS) is widespread in the environment. Under low concentration, the toxicity of triclosan is not obvious, but under certain conditions, it can be converted into other substances, whose toxicity has already caused concerns. A method for analysis of tricosan in water using solid phase extraction (SPE) and...
Samples of groundwater were collected from 17 sites in Jianghan plain in July, 2007. Sixteen phthalate esters (PAEs) in each sample were detected using solid-phase extraction (SPE) - gas chromatography (GC) spectrometry. The results showed that there were one or several PAEs in all the samples and the concentrations of total PAEs ranged from 80.12 to 1882.18 ng/L. Four PAEs, i.e. di-iso-butyl phthalate...
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