# Presentation: 692818

## Central Asia Cooperative  Monitoring Experiment “Navruz”

**Institute of Nuclear Physics**
** ****Uzbek Academy of Science**
** ****Tashkent, Uzbekistan **
**Director -Bekhzad S. Yuldashev**
**Reporters- Raisa I. Radyuk**

## Project Manager B.S.Yuldashev

**Project Manager B.S.Yuldashev**

## CONCEPT

**-Develop Concept of Experiment**
**-Sampling and Analysis Plan**
**-Sampling**
**-Samples Analyzes**
**- Record data**
**-Analyze data**
**-Write reports**
**-Analyze complete data**
**-Write reports and articles for international publications**

## Slide 4

## Project Supervisor R.I. Radyuk

**Project Supervisor R.I. Radyuk**

## Water sampling on Chirchik River

**Kaz          15              44             15        15     14      no**
**Kg            15             35              15         5      15      no**
**Tj              13             39              13       13      13      no**
**Uzb          12             48               12       12     12      12 **

**Water sampling on Chirchik River**

## Sampling of bottom sediment.

**Sampling of bottom sediment.**
** ****River Syr-Darya, Chinaz.**

## Hydrolab Field Data Collection Log

## Chemical parameters determination using HYDROLAB. Chirchik River.

**Chemical parameters determination using HYDROLAB. Chirchik River.**

## Slide 10

## Flow discharge measurements using FLOWMETER. Chirchik River.

**Flow discharge measurements using FLOWMETER. Chirchik River.**

## Syr Darya River

- g/L

**Salt Concentration**/L

- Bq/L

**Water specific beta-activity**

**Syr Darya River**

## Syr Darya River

**Salt Concentration**/L

- g/L

**Water specific alpha-activity**

**Syr Darya River**

- Bq/L

## Amu Darya River

**Salt Concentration**/L

**Water specific beta-activity**

**Amu Darya River**

- g/L

- Bq/L

## Amu Darya River

**Salt Concentration**/L

**Water specific alpha-activity**

**Amu Darya River**

- g/L

- Bq/L

- Bq/L

## Bottom sediments specific activity

- Bq/kg

**alpha**
**beta**

- Soil specific activity

- Bq/kg

**alpha**
**beta**

**Syr Darya River**

## Bottom sediments specific activity

- Bq/kg

- Soil specific activity

- Bq/kg

**Amu Darya River**

**alpha**
**beta**

- Bq/kg

- Bq/kg

**alpha**
**beta**

## Alpha and beta radioactivity measurements using  NRR-610. Analyst E.D. Vdovina

**Alpha and beta radioactivity measurements using  NRR-610. Analyst E.D. Vdovina**

## U-238 and Ra-226 in bottom sediments

**U-238 and Ra-226 in bottom sediments**

**U-238 and Ra-226 in soil**

**Syr Darya River**

- Bq/kg

- Bq/kg

**U-238**
**Ra-226**

**U-238**
**Ra-226**

## U-238 and Ra-226 in bottom sediments

**U-238 and Ra-226 in soil**

**Amu Darya River**

- Bq/kg

**U-238**
**Ra-226**

**U-238**
**Ra-226**

- Bq/kg

- Bq/kg

## Th-232 in bottom sediment and soil

**Th-232 in bottom sediment and soil**

**K-40 in bottom sediment and soil**

**Syr Darya River**

- Bq/kg

- Bq/kg

- Soil
- Sediment

- Soil
- Sediment

## Th-232 in bottom sediment and soil

**K-40 in bottom sediment and soil**

**Amu Darya River**

- Bq/kg

- Bq/kg

- Soil
- Sediment

- Soil
- Sediment

## alpha

- Bq/kg

**alpha**
**beta**

**RADIOACTIVITY OF VEGETATION UZBEKISTAN**

## CONTENT OF SEDIMENT

**CONTENT OF SEDIMENT**

## Sampling expedition

**Water sample preparation. Analyst  S.I. Yatsenko**

**Sampling expedition**
**V.S. Vasilieva, **
**A. Rakhimbayev, E.D. Vdovina, **
**O.A. Smolkova**

## ACTIVATION ANALYSIS - AN ADDITIONAL TOOL TO DETERMINE  U, Th AND ACCOMPANYING ELEMENTS

**Detection of natural and man-made anomalies**
**Nuclear reactor, HPGe-detector  and computed multichanell analyzer**

## Prepared samples were packed into bags of pure polyethylene foils and irradiated at a neutron flux of 5.1013 n/cm2.s for 15 s. Immediately after irradiation, the induced gamma-spectra of 37Cl and 128I were measured. One hour after irradiation, the induced activities of 24Na, 64Cu, and 56Mn were determined. One week later the samples were repacked in pure aluminum foil and irradiated at the same flux for 15 h. A week later, gamma-ray spectrometry was used to determine Ca, Br, La, Au, and U. One month later Sc, Cr, Fe, Co, Zn, Se, Ba, Cs, Sr, Eu, Rb, Ag, Sb Hg, Th concentrations were determined.

## Standard samples were made by placing a known amount of element solutions on strips of ashless paper. At the same time, a laboratory reference material was prepared. The quality of standards and that of the laboratory reference material were evaluated by analyzing IAEA Standard Reference Materials.

## Slide 29

## NEUTRON ACTIVATION ANALYSIS TEAM

**NEUTRON ACTIVATION ANALYSIS TEAM**

**L.I. ZHUK**

**A.A. KIST**

**E.A. DANILOVA**

##  Water dissolved Na. Syr Darya.

** ****Water dissolved Na. Syr Darya.**

- Aral-Sea                  Mountains

**AUTUMN**
**SPRING**

- mg/L

## Th IN BOTTOM SEDIMENT. SYR DARYA, AUTUMN

- mg/kg

- Mountains                                              Aral-Sea

**Th IN BOTTOM SEDIMENT. SYR DARYA, AUTUMN**

**NO SAMPLES**

## EXPERIMENT IS CONTINUING

**EXPERIMENT IS CONTINUING**

**Deputy Director**
**U.S. Salikhbayev**

## CORDIAL THANKS TO CMC AND DOE FOR ARRANGEMENT, SUPPORT AND SUPERVISING OF THIS EXTREMELY IMPORTANT FOR CENTRAL ASIA EXPERIMENT