ChemInform Abstract: Determination of Hazardous Compounds Isolated from Environmental Samples Utilizing Various Stationary Phases and Columns for Chromatographic Techniques

ChemInform ◽  
2010 ◽  
Vol 30 (41) ◽  
pp. no-no
Author(s):  
Boguslaw Buszewski ◽  
Magdalena Ligor ◽  
Tomasz Ligor ◽  
Nobuo Tanaka
Keyword(s):  
Environmental Samples ◽  
Stationary Phases ◽  
Chromatographic Techniques ◽  
Hazardous Compounds

scholarly journals DETERMINATION OF BTEX IN ENVIRONMENTAL SAMPLES: DEVELOPMENT AND PROTECTION OF TECHNOLOGIES AND ANALYTICAL METHODS

2019 ◽  
Vol 16 (31) ◽  
pp. 431-439
Author(s):  
Helilma de Andréa PINHEIRO ◽  
Ana Paula Mota FERREIRA ◽  
Ismael Carlos Braga ALVES ◽  
Antônio Fernandes SANTOS JÚNIOR ◽  
Raquel Bezerra dos Santos SAWCZUK ◽  
...  
Keyword(s):  
Petroleum Hydrocarbons ◽  
Environmental Samples ◽  
Low Cost ◽  
The United States ◽  
Operational Control ◽  
Toxic Compounds ◽  
Chromatographic Techniques ◽  
Benzene Toluene ◽  
And Storage

The contamination of water and soil by petroleum hydrocarbons is reported quite frequently, mainly due to accidents involving transport and storage of fuels. Among the most toxic compounds the most volatile benzene, toluene, ethylbenzene and xylene (BTEX). Residues of these compounds can cause serious environmental and public health troubles. Thus, more sensitive, selective and low-cost techniques, focused on the analysis and monitoring of these contaminants are being developed in order to establish operational control and to comply with local laws, but the intellectual property of such technologies is still unknown. The present study shows the panorama about patents, thesis and dissertations which have been already published on this theme. Together, the United States and China hold the largest number of patents, and most of thesis/dissertations describe methodologies for BTEX detection in water, although numerous environmental problems caused by oils in the soil had been reported. Also, the methods based on chromatographic techniques stand out in relation to the other techniques. It was possible to verify important advances in the field of sensors, especially the electrochemical ones, in order to solve the analytical gaps.

Isolation and Determination of 4‐Nonylphenol in Environmental Samples Using Combined Chromatographic Techniques

2004 ◽  
Vol 27 (19) ◽  
pp. 2997-3012 ◽  
Author(s):  
Renata Gadzała‐Kopciuch ◽  
Beata Berecka ◽  
Tomasz Ligor ◽  
Bogusław Buszewski
Keyword(s):  
Environmental Samples ◽  
Chromatographic Techniques

Chromatographic Techniques for Rare Earth Elements Analysis

2017 ◽  
Vol 2 (4) ◽  
Author(s):  
Beibei Chen ◽  
Man He ◽  
Huashan Zhang ◽  
Zucheng Jiang ◽  
Bin Hu
Keyword(s):  
Rare Earth ◽  
Separation Efficiency ◽  
Stationary Phases ◽  
Exchange Chromatography ◽  
Chromatographic Techniques ◽  
Mobile Phases ◽  
Very High ◽  
High Separation ◽  
Separation Of Rees

AbstractThe present capability of rare earth element (REE) analysis has been achieved by the development of two instrumental techniques. The efficiency of spectroscopic methods was extraordinarily improved for the detection and determination of REE traces in various materials. On the other hand, the determination of REEs very often depends on the preconcentration and separation of REEs, and chromatographic techniques are very powerful tools for the separation of REEs. By coupling with sensitive detectors, many ambitious analytical tasks can be fulfilled.Liquid chromatography is the most widely used technique. Different combinations of stationary phases and mobile phases could be used in ion exchange chromatography, ion chromatography, ion-pair reverse-phase chromatography and some other techniques. The application of gas chromatography is limited because only volatile compounds of REEs can be separated. Thin-layer and paper chromatography are techniques that cannot be directly coupled with suitable detectors, which limit their applications. For special demands, separations can be performed by capillary electrophoresis, which has very high separation efficiency.

Gas-Liquid Chromatographic Determination of Technical Chlordane Residues in Food Crops: Interpretation of Analytical Data

1975 ◽  
Vol 58 (5) ◽  
pp. 1051-1061
Author(s):  
William P Cochrane ◽  
James F Lawrence ◽  
Young W Lee ◽  
Ronald B Maybury ◽  
Brian P Wilson
Keyword(s):  
Field Experiments ◽  
Stationary Phases ◽  
Analytical Data ◽  
Chromatographic Determination ◽  
Electron Capture Detection ◽  
Food Crops ◽  
Liquid Chromatographic Determination ◽  
Consistent Method ◽  
Liquid Chromatographic

Abstract An interlaboratory investigation of technical chlordane residues in food crops was carried out to determine the most practical and consistent method of reporting results. Using a technical chlordane reference standard, 8 gas chromatographic stationary phases were studied for their resolution capabilities. The best separations were obtained with SE-30 and its OV-1 equivalent. Using these columns and electron capture detection, potatoes and carrots from supervised field experiments were analyzed in duplicate and quantitated by using 4 methods of calculation. The data were statistically treated to determine the precision and bias for each method. Also, 1 sample was analyzed in duplicate on 2 different occasions by 6 laboratories to substantiate the initial conclusions. Based on the criterion of high precision it is suggested that a comparison of total area under the chromatogram of the sample with total area of a standard technical chlordane be the method of quantitation. Only peaks which are common to both standard and sample have any significance in this type of calculation.

Field analysis Cr(VI) in water samples by a smartphone-based ultralong absorption path reflection colorimetric device

2021 ◽  
Author(s):  
Xiaolan Chen ◽  
Cheng Ma ◽  
Qi Kang ◽  
Yu-Qin Chen ◽  
Dazhong Shen
Keyword(s):  
Hexavalent Chromium ◽  
Water Samples ◽  
Environmental Samples ◽  
Field Analysis ◽  
Absorption Path

Hexavalent chromium is highly toxic and regarded as one of the main pollutants in environmental samples. Sophisticated laboratory instruments are commercially available for in-field determination of chromium. It is highly...

Facile and Sensitive Spectrophotometric Determination of Carbosulfan in Formulations and Environmental Samples

2006 ◽  
Vol 129 (1-3) ◽  
pp. 271-276 ◽  
Author(s):  
K. Suresh Kumar ◽  
K. Suvardhan ◽  
D. Rekha ◽  
K. Kiran ◽  
G. Chalapathi Rao ◽  
...  
Keyword(s):  
Spectrophotometric Determination ◽  
Environmental Samples
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