Sandimirov S. Pollution of the Sediments of the Paz River basin / In State of the environment in the Norwegian, Finnish and Russian border area. The Finnish Environment. Finland, Jyvaskyla: Kopijyva Oy. 2007, №6, 98p.

Table of Contents Page 1. Summary of the Sediment Investigations 4 1.1. Introduction 4 1.2. Materials And Investigation Techniques 5 1.3. Discussion 5 1.3.1. Background concentrations of the elements 5 1.3.2. Vertical distribution of elements in lake sediment 6 cores 1.3.3. Distribution of elements in the surface sediments 7 1.3.4. Contamination degree of Hakanson 8 1.4. Recommendations to the monitoring program 10 1.4.1. Obligatory monitoring - minimum quantity of 10 researches carried out on seasons annually 1.4.1.1. Concrete lakes 10 1.4.1.2. Controllable parameters, the suggested 10 approach and method 1.4.1.3. Frequency and periodicity of sampling - 10 once a year, in September. 1.4.2. The comprehensive monitoring, spent ones in 10 3 - 4 years 1.4.2.1. Concrete lakes - all lakes investigated 10 during this monitoring program. 1.4.2.2. Controllable parameters, the suggested 10 approach and method 1.4.2.3. Frequency and periodicity of sampling - 10 once in 3 - 4 years, in September 2. Heavy Metals in the Sediments of the Paz System 10 2.1. Background Concentrations of Heavy Metals 10 2.2. Vertical Distribution of Heavy Metals in Bottom 11 Sediments 2.3. Distribution of Heavy Metals in the Top Layers of 11 Lake Sediments 2.4. The Factor and Degree of Contamination of Lake 13 Sediments 3. Pollution of the Sediments of the Russian Lakes of the 15 Paz River System 3.1. Background Concentrations of Heavy Metals 15 2