Chernobyl still with us: 137Caesium activity contents in seabed sediments from the Gulf of Bothnia, northern Baltic Sea

Synthesis of π-extended and bowl-shaped sumanene–ferrocene conjugates and their application in highly selective and sensitive cesium cations electrochemical sensors

“…31,32 The results of the studies have great environmental importance due to significant concentrations of radio-active cesium isotopes, including Cs 137 , were found in post-disaster areas of nuclear plant accidents in Fukushima and Chernobyl. [33][34][35][36] In this study, the synthesis of novel sumanene-ferrocene conjugates sumFc-1-sumFc-3 (Fig. 1c) and their application as receptor layers in electrochemical sensors to detect cesium cations in water is reported.…”

“…31,32 The results of the studies have great environmental importance due to significant concentrations of radioactive cesium isotopes, including Cs 137 , were found in post-disaster areas of nuclear plant accidents in Fukushima and Chernobyl. 33–36…”

Application of Monoferrocenylsumanenes Derived from Sonogashira Cross-Coupling or Click Chemistry Reactions in Highly Sensitive and Selective Cesium Cation Electrochemical Sensors

“…The laser beam wavelength of λ = 213 nm, energy of 3 mJ, and diameter of 100 μm were used to ablate the surface layers of the analyzed samples. During multi-line ablation (n = 5, 20 Hz) with the constant scan rate of 100 μm/s, transient signals were registered for 23 Na, 39 K, 57 Fe, 133 Cs, and 137 Ba. The operating conditions of the used ICP-MS system are given in the Supporting Information, Table S1.…”

“…In addition, based on our recent studies on the use of specific sumanene-ferrocene conjugates in the detection of cesium cations in liquid samples, , we investigated whether the newly synthesized monoferrocenylsumanenes 7 and 8 could act as effective building units of cesium cation fluorescence and electrochemical sensors. The environmental significance of developing novel receptors for the identification of cesium cations in solution stems from the discovery of considerable levels of radioactive cesium isotopes in the postdisaster sites of nuclear plant accidents in Fukushima (2011) and Chernobyl (1986). − Because of its relatively long half-life (30 years) and presence in oceans and groundwater, a significant increase in the amount of radioactive cesium in the environment is harmful. Cesium pollution is thus hazardous and has severe impact on aquatic species, as well as agriculture, farming, and human health.…”

Radiation Hazard from Natural Radioactivity in the Marine Sediment of Jeddah Coast, Red Sea, Saudi Arabia

“…Diab et al [23] noticed a slight increase in 238 U and 232 Th levels due to oil exploration and production activities in Egypt's Gulf of Suez. Influences of the Chernobyl disaster are still noted in the marine sediments of numerous European countries such as the Gulf of Bothnia [24], Swedish coast [25], Amvrakikos Gulf (Greece) [26], Vefsnfjord (Norway) [27], Black Sea [28], and Baltic Sea [19]. Radionuclides released from the Fukushima accident have been transported long distances within the Pacific Ocean and are stored in marine sediments [29,30].…”