Preparation of an aminopropyl imidazole-modified silica gel as a sorbent for solid-phase extraction of carboxylic acid compounds and polycyclic aromatic hydrocarbons

The Analyst ◽  
2014 ◽  
Vol 139 (10) ◽  
pp. 2531 ◽  
Author(s):  
Na Wang ◽  
Yong Guo ◽  
Licheng Wang ◽  
Xiaojing Liang ◽  
Shujuan Liu ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Carboxylic Acid ◽  
Solid Phase Extraction ◽  
Silica Gel ◽  
Aromatic Hydrocarbons ◽  
Solid Phase ◽  
Phase Extraction ◽  
Modified Silica ◽  
Modified Silica Gel ◽  
Polycyclic Aromatic

A Correlation Study between Polycyclic Aromatic Hydrocarbons in Urumqi Snow and the Surrounding Environment

2013 ◽  
Vol 864-867 ◽  
pp. 1364-1368
Author(s):  
Yakup Parida ◽  
Eslamjan Diwani
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Solid Phase Extraction ◽  
Aromatic Hydrocarbons ◽  
Solid Phase ◽  
Total Concentration ◽  
Correlation Study ◽  
Phase Extraction ◽  
Purification Method ◽  
Surrounding Environment ◽  
Polycyclic Aromatic

Based on the principle of solid phase extraction and the purification method using Florida silica, sixteen various kinds of polycyclic aromatic hydrocarbons such as naphthalene, acenaphthene and fluorene were measured in Urumqi snow by means of HPLC. The results showed that the concentration of PAHs was different in different sampling sites in Urumqi. The total concentration of PAHs was in the range of 0.2883 ~ 8.814 µg/mL and the content of PAHs snow was higher than that in water, which indicated that the snow was polluted by organic matters to a certain degree and the pollution was not so serious compared with the groundwater. So the snow has a certain application value for life.

scholarly journals Magnetic hybrid support for ultrasound-assisted magnetic solid-phase extraction of polycyclic aromatic hydrocarbons from produced water

2019 ◽  
Vol 146 ◽  
pp. 1195-1203 ◽  
Author(s):  
Vinícius Crispim Lima de Barros Caetano ◽  
Graziele da Costa Cunha ◽  
Rhayza Victoria Matos Oliveira ◽  
Marcelo da Rosa Alexandre ◽  
Luciane Pimenta Cruz Romão
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Solid Phase Extraction ◽  
Aromatic Hydrocarbons ◽  
Produced Water ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Polycyclic Aromatic ◽  
Magnetic Solid ◽  
Ultrasound Assisted

scholarly journals Composite MOFs as adsorbents for solid phase extraction combined with high performance liquid chromatography for the determination of polycyclic aromatic hydrocarbons in water

2019 ◽  
Vol 136 ◽  
pp. 06011
Author(s):  
Yu Li ◽  
Xiaojing Yang ◽  
Baohui Li
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Solid Phase Extraction ◽  
Water Sample ◽  
Aromatic Hydrocarbons ◽  
High Performance ◽  
Solid Phase ◽  
Phase Extraction ◽  
High Porosity ◽  
Excellent Thermal Stability ◽  
Polycyclic Aromatic

Metal-organic frameworks (MOFs) are a kind of porous materials, which has large specific surface area, high porosity, diverse structure, excellent thermal stability and solvent stability etc. So, it has attracted extensive attention as an adsorbent for solid phase extraction (SPE). Polycyclic aromatic hydrocarbons (PAHs) are a kind of persistent organic pollutants that can lead serious hurts to the ecological environment and human health. The purpose of this paper is to optimize the types and proportion of mixed lanthanum based MOFs, and to improve the enrichment efficiency of SPE. Then a method to analysis PAHs by SPE-HPLC was established. Several main factors that could effected the pre-treatment efficient, such as the amount of adsorbent, the amount and pH of PAHs water sample, and the volume of eluent, were investigated. After optimized, the extraction of seven PAHs in water sample was achieved and the recovery rates were 80.67%, 80.06%, 54.69%, 82.62%, 118.87%, 70.30% and 95.57% respectively.

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