dc.creator | Šunjka, Dragana | |
dc.creator | Lazić, Sanja | |
dc.creator | Grahovac, Nada | |
dc.creator | Vuković, Slavica | |
dc.creator | Jakšić, Snežana | |
dc.date.accessioned | 2023-03-07T12:49:00Z | |
dc.date.available | 2023-03-07T12:49:00Z | |
dc.date.issued | 2012 | |
dc.identifier.isbn | 978-961-6311-72-4 | |
dc.identifier.uri | http://fiver.ifvcns.rs/handle/123456789/3315 | |
dc.description.abstract | Chlorpyrifos (0,O-dietyl O-(3,4,5-trichloro-2-pyridy!) phosphorothioate) is the one of
the most widely used insecticides in the world and it is detected more frequently in
surface and groundwaters than any other organophosphorus insecticide. According to EU
Directive 2008/105/EC (Annex X) chlorpyrifos is classified as one of the most important
water pollutants. This study assessed the possibility of chlorpyrifos detection in samples
of tap water and groundwater.
Extraction of chlorpyrifos was performed using ENVI C18 SP disc (47 mm). Prior to
extraction disc was conditioned with 5 ml of acetonitrile/methanol (50/50, v/v) and 5 ml
deionized water. Under vacuum 500 mi of tap water / groundwater with added
chlorpyrifos standard solution in concentration 0.01-1.0 ug/ml, was filtered through the
disc. Disc was dried at 25 °C for 1h. Chlorpyrifos was eluted with 6 ml (2x3 mL) of
acetonitrile/methanol (50/50, v/v) mixture and evaporated to dryness. The extract was
diluted in 2 ml of acetonitrile/methanol (50/50, v/v). Analysis was performed with a
Hewlett-Packard (HP) model 5890 Series Il gas chromatograph with EC Ni” detector.
Determination conditions were — t °C of column 190 °C with an increase of 30
°C/min up to 275 °C, t °C of injector 230 °C and t*C of detector 300 °C. The linearity of
the method was evaluated by chromatographing chlorpyrifos solution in concentrations
0.001-1.0 pg/ml. Correlation coefficient (R*) was 0.995 % and limit of detection (LOD) and
limit of quantification (LOQ) were 0.004 pg/ml and 0.01 pg/ml, respectively. The average
recovery for tap water was 95.5 % and for groundwater 87.2 %. | sr |
dc.language.iso | en | sr |
dc.publisher | Nova Gorica : University of Nova Gorica | sr |
dc.relation | info:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/43005/RS// | sr |
dc.rights | openAccess | sr |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.source | Book of Abstracts. 19th Young investigators' Seminar on Analytical Chemistry (YISAC 2012), 27-30 June 2012, Nova Gorica, Slovenia | sr |
dc.subject | chlorpyrifos | sr |
dc.subject | determination | sr |
dc.subject | water | sr |
dc.title | Determination of chlorpyrifos residues in water | sr |
dc.type | conferenceObject | sr |
dc.rights.license | BY | sr |
dc.citation.spage | 7 | |
dc.identifier.fulltext | http://fiver.ifvcns.rs/bitstream/id/9212/bitstream_9212.pdf | |
dc.identifier.rcub | https://hdl.handle.net/21.15107/rcub_fiver_3315 | |
dc.type.version | publishedVersion | sr |