In:
Romanian Journal of Ecology & Environmental Chemistry, National Research and Development Institute for Industrial Ecology IND-ECOIND, Vol. 3, No. 1 ( 2021-6-30), p. 39-48
Abstract:
Using an LC-MS-MS method for detection of 6 neonicotinoid insecticides (imidacloprid, dinotefuran, acetamiprid, clothianidin, thiamethoxam, nitenpyram) was developed a new performant extraction method based on sonication treatment of soil samples, which were previously dried, grounded, homogenized, sieved (2 mm) and subjected to the selective extraction process with acetonitrile. Then the obtained extracts were diluted with ultrapure water (ratio 1: 100) and subjected to purification by Strata C18 SPE extraction using cartridges loaded with 200 mg/6 mL of octa-dodecyl-silica adsorbent phase. The entire methodology allowed obtaining quantification limits at trace level that varied in the range 0.3-0.9 ng/g and recoveries between 71.4% and 109.6%. In the agricultural soil samples, taken from the lands cultivated with wheat, corn, sunflower, beans, located in Prahova and Giurgiu counties (Romania), only four neonicotinoids out of the total of six were quantified imidacloprid (0.38 ng/g-56.9 ng/g), acetamiprid (1.7-7.2 ng/g), thiamethoxam (1.05-6.7 ng/g), clothianidin (1.1-1.5 ng/g).
Type of Medium:
Online Resource
ISSN:
2668-5418
,
2668-8530
DOI:
10.21698/rjeec.2021.1
DOI:
10.21698/rjeec.2021.105
Language:
Unknown
Publisher:
National Research and Development Institute for Industrial Ecology IND-ECOIND
Publication Date:
2021
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