Mass spectral method with inductively coupled plasma (MS) and atomic emission method with inductively coupled plasma (AES) at ASIC VNIIMS named after N.M. Fedorovskiy 53 chemical elements and 8 oxides in sod-strongly-podzolic light loamy soil were determined. Soil samples were taken from horizons А1 (deposit) and Ап (arable land) during long-term agricultural use in SKhPK named after Michurin of Vavozhskiy district of the Udmurt Republic. Relative to horizon А1 (deposit), in the plow layer there is a higher content of zinc, cadmium and lead - elements of the toxicity class 1, copper - element of the toxicity class 2, barium, strontium and tungsten - elements of the toxicity class 3. In accordance with the requirements of the hygienic standard GN 2.1.7.2041-06, only the arsenic content exceeded maximum permissible concentration. Among the oxides in the arable layer Ап, an increased content of magnesium and iron oxides was noted, compared with their concentration in the А1 horizon (deposit). In the course of the study, it was found that the studied sod-strongly podzolic light loamy soil with long-term agricultural use is characterized by an increase in the content of zinc in the arable layer by 16.8, lead by 0.4, cadmium by 0.11 μg/g, barium by 33.1, strontium by 3.1 and tungsten by 0.11 μg/g relative to their concentration in the А1 horizon (deposit). According to the content in the arable layer of heavy metals sod-strongly podzolic light loamy soil SKhPK named after Michurin of Vavozhskiy district of the Udmurt Republic can be classified as soil with a low level of pollution. According to the total pollution indicator, the soil corresponds to the category of permissible pollution level.
The chemical composition of the arable layer of soddy mesopodzol and middling soil was studied for 53 elements and 8 oxides. Образцы были отобраны в шестой ротации севооборота с варианта без удобрений и с варианта (NPK)60+известь по 1+2 г.к. под 1 и 2 ротацию севооборота в паровом поле длительного опыта, который заложен в 1971-1972 гг. на опытном поле НГБУ Удмуртский НИИСХ. The content of chemical elements in the soil is determined in the analytical certification test center (AСTС) Russian Research Institute of Mineral Resources named after N.M. Fedorovskiy by mass spectral analysis with inductively coupled plasma (MS) and atomic-emission method with inductively coupled plasma (AES). According to the research, it was found, that in the topsoil in the variant with mineral fertilizers the content of heavy metals (vanadium, chromium, cobalt, nickel, copper, zinc, arsenic, cadmium, lead) was increased relative to similar values in the variant of without fertilizers, but their concentration does not exceed the admissible concentration limit. The oxide content in the topsoil during long-term application of mineral fertilizers has not changed compared with their content in the topsoil without fertilizer.
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