Journals / Ekoloji / 2010 / Cilt: 19 - Sayı: 77

Dating of the Sediment Accumulation Rate, Radioactive and Heavy Metal Pollution in the Van Lake

Van Gölü'nde Sediment Birikim Hızı, Radyoaktif ve Ağır Metal Kirliliğinin Tarihlemesi

Journal
Ekoloji
Pages
80–87
Publication Date
2022-10-17
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Furthermore, heavy metal concentrations (Cd, Cr, Cu, Pb) which was related to industrial, urban, agricultural wastes and geology of the basin were evaluated.

📌 3 Key Takeaways

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Objective & Hypothesis:The sediment accumulation rates and dating studies in the aquatic environments have significant importance on understanding of the relationship between human activities and aquatic medium.
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Key Findings & Data:In this study, sediment accumulation rates and $^ {210} Pb$ fluxes were calculated by using excess $^ {210} Pb$ profile distributions and C.R.S. model together, and the dating of each layer was determined in three sediment cores where were sampled from east side of Van Lake. $^ {210} Pb$ activity was obtained from activities which was measured with alpha spectroscopy of the $^ {210} Po$.
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Conclusion & Impact:Furthermore, heavy metal concentrations (Cd, Cr, Cu, Pb) which was related to industrial, urban, agricultural wastes and geology of the basin were evaluated.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

The sediment accumulation rates and dating studies in the aquatic environments have significant importance on understanding of the relationship between human activities and aquatic medium. In this study, sediment accumulation rates and $^ {210} Pb$ fluxes were calculated by using excess $^ {210} Pb$ profile distributions and C.R.S. model together, and the dating of each layer was determined in three sediment cores where were sampled from east side of Van Lake. $^ {210} Pb$ activity was obtained from activities which was measured with alpha spectroscopy of the $^ {210} Po$. Average sediment accumulation rates in the cores were found as 0.031±0.011, 0.046±0.021 and 0.077±0.051 g.$cm^ {-2}.y^ {-1}$. It was observed that sediment accumulation rates were found as significantly high levels in the areas where had high human activities and transportations from agricultural areas via stream erosion. In addition to, it was investigated the distributions of the $^ {137} Cs$ isotop which is a fission product along two sediment core, and it was determined the concentrations of $^ {137} Cs$at certain levels which were spreaded to area because of the nuclear weapon tests conducted in 1954-1963 and Chernobyl nuclear plant accident in 1986. According to the general trend of $^ {137} Cs$ distribution, it has pointed out that entry of $^ {137} Cs$ to the lake from the environment continuous already now. Furthermore, heavy metal concentrations (Cd, Cr, Cu, Pb) which was related to industrial, urban, agricultural wastes and geology of the basin were evaluated.

Özet

Akuatik ortamlarda sediment birikim hızı ve tarihleme çalışmaları, insan aktiviteleri ile akuatik ortam arasındaki ilişkinin anlaşılmasında büyük öneme sahiptir. Çalışmada Van Gölü'nün doğusundan seçilen üç sediment korunda denge üstü $^ {210} Pb$ profil dağılımları, C.R.S. modeli ile birlikte kullanılarak sediment birikim hızı ve $^ {210} Pb$ akısı hesaplanmış ve her katmanın tarihlemesi yapılmıştır. $^ {210} Pb$ aktivitesi, $^ {210} P$o'un alfa spektroskopisi ile ölçülen aktivitelerinden elde edilmiştir. Korlardaki ortalama sediment birikim hızları 0,031±0,011, 0,046±0,021 ve 0,077±0,051 g.$cm^ {-2}.y^ {-1}$ olarak bulunmuştur. İnsan aktivitelerinin ve akarsu ile tarımsal alanlardan taşınımın yüksek olduğu kesimde sediment birikim hızlarının çok daha yüksek olduğu gözlenmiştir. Buna ek olarak, bir fisyon ürünü olan $^ {137} Cs$ izotopunun iki sediment koru boyunca dağılımları incelenmiş ve 1954-1963 yıllarındaki nükleer silah denemeleri sonucunda ve 1986 yılındaki Çernobil kazasında çevreye yayılan $^ {137} Cs$'nin varlığı tespit edilmiştir. $^ {137} Cs$'nin genel dağılımı ise girişin muhtemelen zaman zaman devam ettiğini düşündürmektedir. Ayrıca endüstriyel, kentsel, tarımsal atıklar ve havzanın jeolojisiyle ilişkili olan ağır metal konsantrasyonları (Cd, Cr, Cu, Pb) belirlenmiştir.

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Cite This Article

YILDIZ, N., YENER, G. (2022). Dating of the Sediment Accumulation Rate, Radioactive and Heavy Metal Pollution in the Van Lake. Ekoloji, Cilt: 19 - Sayı: 77, 80–87. https://ajindex.com/articles/499119

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