Assessment of heavy metal distribution in seawater of Kakinada Bay, a tropical mangrove-rich coastal environment.

The main objective of the present study is to estimate the heavy metal concentrations and ecological risk index (ERI) in the seawater of Kakinada Bay. Turbidity, suspended particulate matter (SPM), pH, salinity, dissolved oxygen, along with heavy metals were recorded from twelve locations of the Bay to understand its hydrographical conditions. The distribution of environmental variables and heavy metal concentrations was noticed mostly from the south to north gradient.

Development and Validation of Stability Indicating UPLC-PDA/MS for the Determination of Imiquimod and its Eight Related Substances: Application to Topical Cream.

A stability indicating analytical method for imiquimod and its related impurities was developed by ultra-pressure liquid chromatography (UPLC) using design of experiments. This method could quantify imiquimod and all its eight known related impurities in a single run. The optimum separation was achieved on reverse phase Acquity UPLC column (2.

Photocatalytic degradation of monocrotophos pesticide--an endocrine disruptor by magnesium doped titania.

Mg-doped TiO(2) with different Mg concentrations were prepared using sol-gel method and characterized by XRD, UV-visible, XPS, SEM and FT-IR. The XRD results revealed that Mg(2+) goes into the TiO(2) lattice. SEM images of the doped and pure TiO(2) indicated that there is a smaller particle size for the doped catalyst compared to that of the pure TiO(2).