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Determination of environmental pollutants in soil and sediments – Some aspects of sample clean‐up and GC analysis
Author(s) -
Da¸browski Łukasz,
GiergielewiczMożajska H.,
Górski Ł.,
Biziuk M.,
Namieśnik J.,
Janicki B.
Publication year - 2002
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/1615-9314(20020401)25:5/6<290::aid-jssc290>3.0.co;2-9
Subject(s) - analyte , matrix (chemical analysis) , chromatography , calibration , chemistry , pollutant , sample preparation , clean up , solvent , environmental chemistry , gas chromatography , pesticide , extraction (chemistry) , organic chemistry , mathematics , statistics , agronomy , biology
Abstract The purpose of this work was to evaluate the results (especially calibration data) of gas chromatographic analysis of a wide range of pollutants (PAH, PCB, various groups of pesticides) in sediments in order determine the influence of any matrix present in the extract. Either crude extract or cleaned‐up extract was used in the experiments. The so‐called matrix‐induced chromatographic response enhancement and its influence on the calibration of chromatographic systems were evaluated. Matrix present in an extract either increases or decreases the chromatographic response. It was shown that calibration procedures using a solution prepared in a matrix‐free solvent often lead to systematic errors when only trace levels of analytes are present in the extract. The greater the extent of sample clean‐up, the less frequent the unpredictable effects. After extensive clean‐up the use of standards prepared in a “pure” solvent as the reference during calibration step can be accepted. Some conclusions for using different sleeves are given and critical points relating to the use of a splitless injector are mentioned.