Abstract The Yellow River is a potentially important source of terrestrially derived phosphorus to the limited Bohai Sea. However, seasonal variation in concentrations, partitioning and bioavailability dissolved particulate along length are poorly constrained. Here, we measure suspended at 72 stations from estuary during rainy season 2020 dry 2021. Mean concentrations total phosphorus, reactive...

The inhibitory effects of radiation and chemicals on the cellular division proceses in yeast and Escherichia coli in the logarithmic phases of growth have been studied in this laboratory. An investigation of phosphorus metabolism was undertaken as part of a program to correlate metabolic changes accompanying the inhibition of cellular division. In order to devise satisfactory experimental condi...

Lake Minnetonka, located in southeastern Minnesota, U.S.A., is currently experiencing increased eutrophication due to excessive phosphorus (P) loading in runoff from agriculture and urban areas. This phenomenon has been exacerbated by the isolation of wetlands in the surrounding watershed from the surface water drainage network. In order to determine if rerouting surface water through these wet...

1. Two methods for the fractionation of phosphatidylinositol into molecular species were developed. In addition to preserving the fatty acid moiety of the molecule, the first method preserves the phosphorus, and the second preserves both the phosphorus and inositol ring. 2. In the first method, phosphatidylinositol was oxidized with periodate and the products reacted with diazomethane. I.r. exa...

Biologically available phosphorus supports plant growth but can also cause environmental contamination. Sequential extraction methods, such as Hedley fractionation, are the most widely used to assess from solids. However, methods exhibit numerous deficiencies. The USEPA Leaching Environmental Assessment Framework (LEAF) is a tiered system developed evaluate releases of Potentially Toxic Element...