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EN
Vegetables are important source of nutrients for human body. Wastewater irrigation may lead to contamination of these vegetables and cause possible health risk. In the present study impact of waste water irrigation on metals uptake (Fe, Mn, Ni, Co, Zn, Cd, Cr and Pb) by five commonly consumed vegetables (radish, cabbage, lettuce, cauliflower and spinach) grown in the suburbs of Peshawar were investigated using AAS (Atomic Absorption spectrophotometer). The uptake and accumulation of metals for vegetables irrigated with wastewater were significantly (p < 0.05) higher than tube well irrigated vegetables and permissible limits of WHO/FAO. Among the edible parts of vegetables maximum accumulation of Mn, Pb and Cd occurred in radish followed by Ni and Fe in spinach while Cr and Zn were high in cauliflower and cabbage. The estimated daily intake of metals (DIM) revealed that at present the consumption of studied vegetables were under the tolerable limits of (US-EPA, IRIS), however intake of metals in waste water irrigated vegetables were significantly high and can cause health hazards in the long run
PL
Warzywa są ważnym źródłem składników odżywczych dla organizmu człowieka. Nawadnianie ściekami może prowadzić do zanieczyszczenia tych warzyw i powodować zagrożenie dla zdrowia. Zbadano wpływ nawadniania roślin ściekami na pobieranie metali (Fe, Mn, Ni, Co, Zn, Cd, Cr i Pb) przez pięć powszechnie spożywanych warzyw (rzodkiewka, kapusta, sałata, kalafior i szpinak), uprawianych na przedmieściach Peszawaru. Stężenia metali oznaczono za pomocą AAS (atomowej spektrometrii absorpcyjnej). Pobieranie i akumulacja metali w warzywach nawadnianych ściekami były istotnie (p < 0,05) wyższe niż dopuszczalne granice podawane przez WHO/FAO. Wśród części jadalnych warzyw maksymalna akumulacja Mn, Pb i Cd wystąpiła w rzodkiewce, Ni i Fe w szpinaku, natomiast Cr i Zn w kalafiorze i kapuście. Oszacowane dzienne stężenie metali w diecie ludności wykazało, że obecna ich ilość w badanych warzywach mieściła się w dopuszczalnych granicach (US-EPA, IRIS), jednak stężenia metali w warzywach nawadnianych ściekami były wysokie, co może powodować zagrożenie dla zdrowia w dłuższym okresie
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2015
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vol. 62
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issue 3
581-587
EN
Toxicity of Pb2+ and Cd2+ is a widespread issue in the world; however, few studies have been conducted to understand their effect at environmentally realistic concentration in a mixture. In the present study, Crucian carp was exposed to Pb2+ (30 µg·l-1), Cd2+ (100 µg·l-1) and their mixture (30+100 µg·l-1) for 96 h and 21 d period to assess changes in the liver and muscle vitamin A and E content, and hematological and serum biochemical parameters. The results indicated significant decline in the level of antioxidant vitamins A, E and alterations in the hematological and serum biochemical indices. The toxicity revealed anemia, impairment of the liver and kidney with evident responses after 21 d exposure due to additive effect of Pb2+ and Cd2+ in mixture. Moreover, the differential response of vitamins A, E and blood parameters to low levels of waterborne Pb2+ and Cd2+ in freshwater fish can be used as biomarkers for monitoring contamination of aquatic environment.
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