предельно допустимая концентрация

The number of nitro compounds of the anthropogenic origin in the general nitrogen cycle is steadily increasing, which leads to an increase in nitrates in products and increases the nitrate-nitrite load on the human body. The aim of the study was to determine the amount of nitrates in raw vegetables and their processed products. Vegetables with high (beetroot, cilantro, radish, green onion), medium (zucchini, carrot, cucumber) and low nitrate content (potato, tomato, onion) have been selected as the objects of the study.

 The state of the environment in cities is determined by the degree of pollution of individual components of the environment. Geochemical anomalies in urban agglomerations are often formed in pollution depositing media such as soil, snow cover, bottom sediments. The purpose of the study is environmental monitoring of anthropogenic impact in diff erent areas of Smolensk and Vyazma according to the physical and chemical characteristics of melted snow.