Implementation of an ultrasonic assisted dispersive μ-solid phase extraction method for trace analysis of lead in aqueous and urine samples

2019 ◽  
Vol 146 ◽  
pp. 782-788 ◽  
Author(s):  
Hamid Reza Sobhi ◽  
Alireza Mohammadzadeh ◽  
Mohammad Behbahani ◽  
Ali Esrafili
Keyword(s):  
Solid Phase Extraction ◽  
Trace Analysis ◽  
Extraction Method ◽  
Solid Phase ◽  
Urine Samples ◽  
Phase Extraction ◽  
Ultrasonic Assisted

scholarly journals Development of a Solid-phase Extraction Method for the Trace Analysis of Perfluoroalkyl Substances in Open-ocean Water

2015 ◽  
Vol 64 (10) ◽  
pp. 759-768
Author(s):  
Eriko YAMAZAKI ◽  
Sachi TANIYASU ◽  
Kodai SHIMAMURA ◽  
Shunya SASAKI ◽  
Nobuyoshi YAMASHITA
Keyword(s):  
Solid Phase Extraction ◽  
Trace Analysis ◽  
Extraction Method ◽  
Solid Phase ◽  
Open Ocean ◽  
Perfluoroalkyl Substances ◽  
Phase Extraction ◽  
Ocean Water

A novel storage and extraction method using solid-phase adsorption and ultrasonic-assisted nebulization extraction coupled to solid phase extraction

2017 ◽  
Vol 9 (33) ◽  
pp. 4863-4872
Author(s):  
Peixu Zhang ◽  
Xuwen Li ◽  
Li Cui ◽  
Jiafeng Chen ◽  
Yan Qu ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Extraction Method ◽  
Solid Phase ◽  
Phase Extraction ◽  
Ultrasonic Assisted ◽  
Solid Phase Adsorption

A novel storage and extraction method was developed for biofluids.

The conjunction of a new ultrasonic-assisted dispersive solid-phase extraction method with HPLC-DAD for the trace determination of diazinon in biological and water media

2018 ◽  
Vol 42 (6) ◽  
pp. 4289-4296 ◽  
Author(s):  
Mohammad Behbahani ◽  
Ali Veisi ◽  
Fariborz Omidi ◽  
Mojtaba Yeganeh Badi ◽  
Aminreza Noghrehabadi ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Extraction Method ◽  
Solid Phase ◽  
Trace Determination ◽  
Phase Extraction ◽  
Trace Detection ◽  
Dispersive Solid Phase Extraction ◽  
Ultrasonic Assisted ◽  
Water Media

Herein, a new ultrasonic-assisted dispersive solid-phase extraction method was successfully developed for the trace detection of diazinon.

scholarly journals A high-throughput and sensitive methodology for the quantification of urinary 8-hydroxy-2′-deoxyguanosine: measurement with gas chromatography-mass spectrometry after single solid-phase extraction

2004 ◽  
Vol 380 (2) ◽  
pp. 541-548 ◽  
Author(s):  
Hai-Shu LIN ◽  
Andrew M. JENNER ◽  
Choon Nam ONG ◽  
Shan Hong HUANG ◽  
Matthew WHITEMAN ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Solid Phase Extraction ◽  
Healthy Subjects ◽  
Solid Phase ◽  
Large Population ◽  
Urine Samples ◽  
Gas Chromatography Mass Spectrometry ◽  
Phase Extraction ◽  
Freeze Dried ◽  
Wide Range

8-Hydroxy-2´-deoxyguanosine (8OHdG) is a widely used biomarker for the measurement of endogenous oxidative DNA damage. A sensitive method for the quantification of 8OHdG in urine by single solid-phase extraction and GC-MS (gas chromatography with MS detection) using selective ion monitoring is described in the present study. After solid-phase extraction, samples are freeze-dried, derivatized by trimethylsilylation and analysed by GC-MS. The urinary 8OHdG was quantified using heavy isotope dilution with [18O]8OHdG. The recovery of 8OHdG after the solid-phase extraction ranged from 70 to 80% for a wide range of urinary 8OHdG levels. Using 1 ml of urine, the limit of quantification was >2.5 nM (2.5 pmol/ml) and the calibration curve was linear in the range 2.5–200 nM. This method was applied to measure 8OHdG in urine samples from 12 healthy subjects. The intra- and inter-day variations were <9%. Urinary 8OHdG levels in spot urine samples from four healthy subjects were also measured for 1 week and, again, the variation was small. The presence of H2O2 in urine did not cause artifactual formation of 8OHdG. Since this assay is simple, rapid, sensitive and reproducible, it seems suitable to be used as a routine methodology for the measurement of urinary excretion of 8OHdG in large population studies.

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