Raziskava o koncentracijah amitraza, kumafosa in timola v medu slovenskih čebelarjev v letu 2020

Helena BAŠA ČESNIK, Veronika KMECL

Povzetek


Izvedli smo raziskavo v kateri smo spremljali ostanke veterinarskih zdravil: amitraza, kumafosa in timola v medu, ki so ga slovenski čebelarji pridelali v letu 2020. Analizirali smo 100 vzorcev: 22 iz ekološke in 78 iz konvencionalne pridelave, z dvema analiznima metodama. Pri metodi za določanje kumafosa in timola smo vzorce ekstrahirali z acetonom, petroletrom in diklorometanom. Pri metodi za določanje amitraza in njegovih razpadnih produktov, smo vzorce hidrolizirali s HCl in NaOH, ekstrahirali z n-heksanom in jih derivatizirali z heptafluorobutiričnim anhidridom. Določevanje je pri obeh metodah potekalo s plinskim kromatografom sklopljenim z masnim spektrometrom. Izmerjene koncentracije amitraza, kumafosa in timola so bile v območju 0,01-0,12 mg kg-1, 0,02-0,06 mg kg-1 oziroma 0,08-0,17 mg kg-1. V 61 % analiziranih vzorcev, nismo določili amitraza, kumafosa in timola. Pridobljene podatke smo primerjali s podatki iz literature. Izračunali smo kronično in akutno izpostavljenost za potrošnike. Maksimalna kronična izpostavljenost za amitraz in timol je bila 0,1 % oziroma 0,05 % sprejemljivega dnevnega vnosa. Maksimalna akutna izpostavljenost za amitraz in timol pa je bila 4 % oziroma 0,8 % akutne referenčne doze.

Ključne besede


ostanki akaricidov: GC-MS; amitraz; kumafos; timol; med; izpostavljenost potrošnikov

Celotno besedilo:

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Literatura


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DOI: http://dx.doi.org/10.14720/aas.2021.117.2.1833

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