Distribution and Source of Polycyclic Aromatic Hydrocarbons ( PAHs) in Soils of XinLuo District, Longyan City

2011 ◽  
Vol 71-78 ◽  
pp. 2907-2911
Author(s):  
Ru Ping Zhang ◽  
Xia Hong Zhang ◽  
Li Fang He
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Analytical Method ◽  
Soxhlet Extraction ◽  
Industrial Area ◽  
Constant Energy ◽  
Synchronous Fluorescence Spectrometry ◽  
Ultrasonic Assisted ◽  
Polycyclic Aromatic

The analytical method for the determination of trace polycyclic aromatic hydrocarbons (PAHs) in environmental soil by ultrasonic assisted soxhlet extraction coupled with constant energy synchronous fluorescence spectrometry was described.The results indicated that were taken in Longyan City XinLuo District of soil containing 9 components: Benzo(k)fluorathene, Anthracene, Fluorathene, 1,12-benzoperylene, 2,3-benzanthracene, 1,2,5,6-dibenzo-anthracene, Fluorene, 2,3-Benzofluorene, Coronene and that the concentrations of PA Hs are in the range of 9.344~372.986 ng.g-1. Industrial area around the PAHs were relatively higher in concentration in the soil, non-industrial area around the PAHs increased with the increase of human activity increased.

Liquid Chromatographic Determination of Polycyclic Aromatic Hydrocarbons in Fish and Shellfish

1985 ◽  
Vol 68 (5) ◽  
pp. 945-949
Author(s):  
Keigo Takatsuki ◽  
Shigeru Suzuki ◽  
Nobutoshi Sato ◽  
Isamu Ushizawa
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Silica Gel ◽  
Aromatic Hydrocarbons ◽  
Ethyl Ether ◽  
Analytical Method ◽  
Alkaline Digestion ◽  
Polycyclic Aromatic ◽  
Liquid Chromatographic ◽  
Fish And Shellfish

Abstract A simple and accurate analytical method for determination of polycyclic aromatic hydrocarbons (PAHs) in fish and shellfish is presented, which is considered to be useful for routine analyses and for screening purposes. The procedure involves alkaline digestion, extraction with n-hexane, silica gel column chromatography, and liquid chromatographic (LC) determination with fluorometric detection. During development of the analytical method for determination of PAHs, it was found that benzo[a]pyrene, a representative PAH, was decomposed easily by the analytical procedure, and this tendency was investigated for the experimental conditions used. Benzo[a]pyrene was decomposed by the coexistence of alkaline conditions, light, and oxygen; by peroxides in aged ethyl ether; and by oxygen when adsorbed on silica gel. Thus, to obtain good recoveries and precise analytical results, these decomposition conditions must be avoided. The following precautions are recommended: protection from light through all analytical steps; addition of Na2S to alkaline digestion mixture as an antioxidant; complete removal of peroxides from ethyl ether just before use; quick column chromatography on silica gel; and prevention of air from contact with adsorbent. When this simple method was applied to fish and shellfish samples, very good recoveries of PAHs from fortified fish samples were obtained, and no serious interferences were observed in fish and shellfish extracts

scholarly journals Determination of the Levels of Polycyclic Aromatic Hydrocarbons in Toasted Bread Using Gas Chromatography Mass Spectrometry

2010 ◽  
Vol 2010 ◽  
pp. 1-8 ◽  
Author(s):  
Amal Al-Rashdan ◽  
Murad I. H. Helaleh ◽  
A. Nisar ◽  
A. Ibtisam ◽  
Zainab Al-Ballam
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Wheat Flour ◽  
Aromatic Hydrocarbons ◽  
Soxhlet Extraction ◽  
Gas Chromatography Mass Spectrometry ◽  
White Wheat ◽  
Relative Standard ◽  
Polycyclic Aromatic ◽  
Repeatability And Reproducibility

Concentration of 16 polycyclic aromatic hydrocarbons (PAHs) in eighteen baked bread samples using gas oven toasting were evaluated in this study. Samples were classified into the following categories: (1) bread baked from white wheat flour, (2) bread baked from brown wheat flour, and (3) sandwich bread baked from white wheat flour. Analysis was performed by GC-MS after Soxhlet extraction of the sample and clean up of the extract. The levels of B[a]P was not detected in ten of eighteen samples. In the rest of the samples, B[a]P are varied from 2.83 to 16.54 g/kg. B[a]A, CHR, B[b]FA, B[k] FA, IP, DB[a,h]A, and B[ghi]P concentrations were found to be less than 10.0 g/kg. However, B[a]P are not detected in original white and brown wheat flour. The total PAHs were varied in the range 1.06–44.24 g/kg and 3.08–278.66 g/kg for H-PAH and L-PAH, respectively. Reproducibility and repeatability of the proposed method was calculated and presented in terms of recovery and relative standard deviations (RSD, %). Recoveries were varied from 72.46% to 99.06% with RSD ± 0.28–15.01% and from 82.39% to 95.01% with RSD ±1.91–13.01% for repeatability and reproducibility, respectively. Different commercialized samples of toasted bread were collected and analyzed.

scholarly journals Determination of Polycyclic Aromatic Hydrocarbons in Agricultural Products

2021 ◽  
Vol 16 (3) ◽  
pp. 127-136
Author(s):  
К.К. Tsymbaliuk ◽  
O.V. Snurnikova ◽  
K.V. Melnyk ◽  
E.M. Fadeev ◽  
V.P. Antonovich
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Matrix Effects ◽  
Soxhlet Extraction ◽  
Agricultural Products ◽  
Gas Chromatography Mass Spectrometry ◽  
Polycyclic Aromatic ◽  
Optimized Conditions ◽  
Gas Chromatographic Separation

The procedure for the determination of polycyclic aromatic hydrocarbons (PAH) in agricultural products on the example of five crops (rapeseed, sunflower, flax, corn, soybeans) by gas chromatography mass spectrometry (GC-MS) was developed. It was showed the advantage of using binary mixtures of organic solvents "hexanedichloromethane" for PAH extraction. The time of Soxhlet extraction is from 6 to 8 hours at optimized conditions. The fractionation and purification of extracts by column chromatography on deactivated alumina was optimized. The article presents the optimization of sample injection in the programmed temperature vaporization (PTV) mode, parameters of gas chromatographic separation and mass spectrometric detection in determining 16 priority PAH in agricultural products. The recoveries, correctness and accuracy of the proposed method were checked by “spikes” with concentrations 0.5, 1.0, 2.5, 5.0 μg kg-1. The linearity of the method was determined by calibration curves obtained for three measurements of calibration solutions with concentrations of 0.5-100 ng mL-1. The effectiveness of the proposed combination of sample preparation and analysis by PTV-GC-MS was studied for linearity, accuracy, matrix effects and reproducibility. The method was validated by linearity, accuracy, matrix effect and reproducibility.

scholarly journals Analytical method development for the determination of polycyclic aromatic hydrocarbons in biological samples

2014 ◽  
Vol 4 (2) ◽  
Author(s):  
P.-L. Cloutier ◽  
F. Fortin ◽  
M. Fournier ◽  
P. Brousseau ◽  
P.-É. Groleau ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Analytical Method ◽  
Biological Samples ◽  
Method Development ◽  
Polycyclic Aromatic

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