Porownanie zawartosci wybranych metali ciezkich w warzywach pochodzacych ze sklepow z zywnoscia ekologiczna oraz placow targowych Krakowa

• Autorzy: Leszczynska T.
• Języki publikacji: PL

Abstrakty

PL

Średni poziom ołowiu, kadmu, miedzi oraz cynku w większości przebadanych warzyw, niezależnie od pochodzenia, był niższy od maksymalnych dopuszczalnych wartości. W warzywach z upraw ekologicznych stwierdzono na ogół niższy poziom ołowiu, kadmu i cynku, nawet do 60% oraz miedzi do 31%. Natomiast w marchwi z wymienionych upraw średni poziom kadmu był wyższy o 58%, a miedzi o 6%. Ponadto warzywa uprawiane metodami ekologicznymi wykazywały wyższą do 32% zawartość suchej masy.

EN

The aim of the study was to compare the content of lead, cadmium, zinc and copper in vegetables originating from ecological and conventional farms. The following vegetables were bought ether in shops with the so-called „healthy food" or in Cracow's market-places: beet roots, carrot, cabbage, parsley (root and leaves), potatoes and onion. Heavy metals were determined in dried and ashed vegetables. The determinations were made by flame atomic absorption spectrometry (Philips Model PU 9100X). The level of dry matter was also determined. Mean levels of lead, cadmium, copper and zinc in the majority of the tested vegetables, irrespective of cultivation method, were below the maximum permissible values set out in relevant regulations. Generally speaking levels of lead, cadmium and zinc in vegetables from ecological farms were even up to 60% lower, and of copper up to 30% lower than in the conventionally grown vegetables. However, the ecologically grown carrot was found to contain about 58% more cadmium and about 6% more copper. The level of copper in red beets originating from the ecological farms was found to exceed by about 16% the level in beets grown conventionally. Mean content of dry matter in vegetables bought in shops offering the socalled „safe for consumption food" was higher, minimum by about 6.5% in cabbage and maximum by about 32% in parsley leaves compared to mean content of dry matter in vegetables cultivated by traditional methods.

Słowa kluczowe

PL

Krakow; cynk; handel detaliczny; kadm; metale ciezkie; miedz; olow; oznaczanie; place targowe zob.targowiska; uprawa ekologiczna; warzywa; zanieczyszczenia zywnosci; zywnosc ekologiczna; targowiska

EN

Krakow city; zinc; retail trade; cadmium; heavy metal; copper; lead; determination; marketplace; ecological cultivation; vegetable; food contaminant; ecological food

• Wydawca: -
• Czasopismo: Bromatologia i Chemia Toksykologiczna
• Rocznik: 1999
• Tom: 32
• Numer: 2
• Opis fizyczny: s.191-196,tab.,bibliogr.

Twórcy

autor

Leszczynska T.

• Akademia Rolnicza, 31-425 Krakow, al.29 Listopada 46