Improving quantitative analysis of GC-MS for tracking potential contaminants in groundwater

Kovacevik, Biljana and Zdravkovski, Zoran and Mitrev, Sasa and Markova Ruzdik, Natalija (2021) Improving quantitative analysis of GC-MS for tracking potential contaminants in groundwater. In: Contaminat Levels and Ecological Effects. Emergent Contaminants and Associated Treatment Technologies . Springer, Switzerland, pp. 213-237. ISBN 978-3-030-66135-9

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Abstract

The behavior of non volatiles benalaxyl, buprofezine, chlorpyrifos, malathion, methomyl, metribuzin, pirimiphos methyl, pyrimethanil, triadimenol, penconazole, and pirimicarb is investigated when increased pressure injection of 10, 20, 30, 40, and 50 psi and vent time of 0.5 and 1.5 min is used during the injection time. The result showed that the peak area obtained during the increased pressure of 50 psi significantly differs from the peak area obtained when the classical hot splitless injection was performed. No significant difference was observed between the investigated vent times. The proposed method using 50 psi for vent time of 0.5 min was validated for benalaxyl, buprofezine, chlorpyrifos, pirimiphos methyl, pyrimethanil, pirimicarb, and triadimenol. The presence of these pesticides was investigated in the groundwater of the investigated area. Pyrimethanyl was detected in three out of 20 investigated samples in a maximum concentration of 0.3392 µg/l. Chlorpyrifos was detected in only one sample in a concentration of 0.0367 µg/l. Correlation analysis was performed to find a possible relationship between the presence of pesticides and ions which predominantly results from human activities. Positive correlation with sulfates and potassium as well as low Na/Cl ratio suggests that pesticides are probably derived in groundwater leaching from the surface area.

Item Type:	Book Section
Subjects:	Natural sciences > Chemical sciences Natural sciences > Earth and related environmental sciences Agricultural Sciences > Other agricultural sciences
Divisions:	Faculty of Agriculture
Depositing User:	Biljana Kovacevik
Date Deposited:	06 Sep 2021 09:52
Last Modified:	06 Sep 2021 09:52
URI:	https://eprints.ugd.edu.mk/id/eprint/28410

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