Analysis of microcystins in sediments using MMPB method

Sorption, degradation and mobility of microcystins in Chinese agriculture soils: risk assessment for groundwater protection

“…The mobilities of the three toxins in the soil evaluated followed an increasing order: soil A < soil C < soil B. Investigations on the adsorption characteristics of toxins from raw water to soils and toxin extraction from sediment have demonstrated that a large mass of toxins in water will be adsorbed and stay in soils or lake sediments (Miller et al, 2001;Morris et al, 2000;Tsuji et al, 2001). However, in our column leaching experiments, the highest concentrations of the added MC-LR and Dha 7 LR were found in the leachate, and a significant amount of MC-RR also migrated to the bottom of the columns in soils B and C. The reasons that the high mobility of MCs in soil columns may have been caused by the use of CaCl 2 in the leaching experiments.…”

“…However, to our knowledge, very little information is available on the fate of MCs in soils (Morris et al, 2000;Tsuji et al, 2001). Therefore, in order to evaluate the risk of groundwater contamination, more knowledge about the fate and transport characteristics of microcystins in soils is absolutely critical.…”

Optimization of an effective extraction procedure for the analysis of microcystins in soils and lake sediments

“…In order to evaluate the environmental risk of microcystin and assess its public health implications, it is important to trace the fate of microcystins in the aquatic environment (Sivonen and Jones, 1999;Tsuji et al, 2001). There have already been a number of studies on the fate of microcystins in water columns and aquatic organisms (Lahti et al, 1997;Pflugmacher et al, 1998;Ishii et al, 2004).…”

“…There have already been a number of studies on the fate of microcystins in water columns and aquatic organisms (Lahti et al, 1997;Pflugmacher et al, 1998;Ishii et al, 2004). However, only a few studies on the fate of microcystins in lake sediment and soils are available (Tsuji et al, 2001;Holst et al, 2003). In fact, it is imperative to broaden our knowledge on the fate and moving behavior of toxins in the interface between water and sediment in both the aquatic environment as well as in soils (Tsuji et al, 2001).…”

“…However, only a few studies on the fate of microcystins in lake sediment and soils are available (Tsuji et al, 2001;Holst et al, 2003). In fact, it is imperative to broaden our knowledge on the fate and moving behavior of toxins in the interface between water and sediment in both the aquatic environment as well as in soils (Tsuji et al, 2001). However, this learning progress has been impeded due to lack of an efficient analytic procedure for toxin determination in sediments and soils.…”