Carter, R. C. and Wilde, P., 1972. Cation exchange capacity of suspended material from coastal sea water off central California. Mar. Geol., 13: 107-122. The cation exchange capacity (CEC) of suspended particles (> 0.5 ~) in sea water is measured by a described methylene blue (MB) absorption method which has the following characteristics: sample volume: minimum of 100 ml sea water; time of meas...

With the constant development of new ionic liquids, the understanding of the chemical fate of these compounds also needs to be updated. To this effect, the interaction of a number of novel ionic liquids with soils was determined. Therefore, three novel headgroups (ammonium, phosphonium, or pyrrolidinium) with single or quaternary substitution were tested on a variety of soils with high-to-low o...

Acute and chronic ecotoxicity tests with zinc were performed with the earthworm Eisenia fetida, the potworm Enchytraeus albidus, and the springtail Folsomia candida. To assess the influence of the soil type on zinc toxicity for these soil invertebrates, these tests were carried out in a standard artificial soil, a sandy and a loamy field soil. Based on the results of this experimental work and ...

This study determines the influence of the different soil components and of the cation-exchange capacity on the adsorption and retention of different heavy metals: cadmium, chromium, copper, nickel, lead and zinc. In order to do so, regression models were created through decision trees and the importance of soil components was assessed. Used variables were: humified organic matter, specific cat...

本研究では，ベントナイトの陽イオン交換容量（CEC）および各種浸出陽イオン量（LC）の測定方法について，ベントナイトの種類に着目して各手法を比較，検討した．試験方法は，酢酸アンモニウム，塩化バリウムおよび塩化ベンジルトリメチルアンモニウムクロリド（BTM）を用いる三種である．本研究にて改良した塩化バリウムを用いる方法と酢酸アンモニウムを用いる方法から得られた CEC は，6 種のベントナイトにおいて の差異が最大 8.8 cmol(+)/kg であり，おおむね一致することが分かった．また，BTMを交換溶媒とする測定方法では随伴鉱物の溶解が抑えることが可能であり，各種LCの合計からCECを，各種LCから交換性陽イオンの組成を推定可能であることを示した．