ABOUT THE CONTENT OF CADMIUM IN WILD-GROWING FODDER, MEDICINAL, AND FOOD PLANTS OF FORESTS OF THE PENZA REGION
2019
A.I. Ivanov | M.I. Andreeva
The objects of the research were samples of soils and herbaceous plants taken in the forest ecosystems of the Penza region, which were analyzed for the total content of cadmium by atomic absorption spectrometry. It was found that in the samples taken from A-horizons of different varieties of grey forest soils, the content of this element was 4-5 times lower than the approximate permissible concentrations (APC). The cadmium concentration in the studied plant species was also significantly lower than the maximum permissible concentrations (MPC). Two types of cadmium distribution were recorded fro herbs. In the goatweed, its content was higher in the underground organs, and in the carex – in the leaves. The minimal values were determined for reproductive organs. The cadmium content in the vegetative organs – representatives of various economic groups of feed plants was different. The lowest values were expressed among representatives of the legume family. The average values are determined for species of herbs, the maximum – for cereals. The samples of the biomaterial of various plant species taken in the study area and used as food and medicinal raw materials contained various amounts of the studied element. The minimum values were determined for alder cones, raspberries and strawberries, the maximum – for leaves and blueberries. Thus, fodder, medicinal and food plants procured in the research area were safe for cadmium content.
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